From 4b484f9a1b0af534f1861ce6ae538957cdba4028 Mon Sep 17 00:00:00 2001
From: OmniLab Team <deviceinfra-copybara@google.com>
Date: Mon, 20 Jul 2026 20:13:01 -0700
Subject: [PATCH] Internal change

PiperOrigin-RevId: 951203692
---
 .../mobileharness/fe/v6/angular/app/app.ts    |   6 +
 .../fe/v6/angular/app/app_routes.ts           |  24 ++-
 .../core/interceptors/universe_interceptor.ts |   7 +-
 .../angular/app/core/models/common_models.ts  | 103 +++++++++++++
 .../angular/app/core/models/test_overview.ts  | 139 ++++--------------
 .../mock_data/tests/overview_error.ts         |   2 +-
 .../mock_data/tests/overview_failed.ts        |   2 +-
 .../mock_data/tests/overview_inprogress.ts    |   2 +-
 .../mock_data/tests/overview_longname.ts      |   2 +-
 .../overview_multiple_errors_warnings.ts      |   2 +-
 .../mock_data/tests/overview_passed.ts        |   2 +-
 .../mock_data/tests/overview_skipped.ts       |   2 +-
 .../mock_data/tests/overview_suspended.ts     |   2 +-
 .../mock_data/tests/overview_timeout.ts       |   2 +-
 .../mock_data/tests/overview_warning.ts       |   2 +-
 .../core/services/test/fake_test_service.ts   |  97 ++++++++----
 .../core/services/test/http_test_service.ts   |  12 +-
 .../fe/v6/angular/app/core/utils/url_utils.ts |  14 ++
 .../dev_harness/dev_harness_page.ng.html      |   2 +-
 .../test_log_tab/test_log_tab.ng.html         |   4 +-
 .../test_log_tab/test_log_tab.spec.ts         |  13 +-
 .../components/test_log_tab/test_log_tab.ts   |  76 +++++-----
 .../test_overview_tab.ng.html                 |   9 +-
 .../test_overview_tab/test_overview_tab.scss  |  60 ++------
 .../test_overview_tab.spec.ts                 |   2 +-
 .../test_overview_tab/test_overview_tab.ts    |  26 ++--
 .../test_detail/models/test_page_ui.ts        |   1 +
 .../features/test_detail/test_detail.ng.html  |  30 ++--
 .../features/test_detail/test_detail.spec.ts  |   5 +-
 .../app/features/test_detail/test_detail.ts   |  16 +-
 .../accordion_item/accordion_item.scss        |   1 +
 .../fe/v6/service/proto/test/BUILD            |   1 +
 .../v6/service/proto/test/test_service.proto  |  15 +-
 .../devtools/mobileharness/fe/v6/server/BUILD |   1 +
 .../fe/v6/server/OssFeServer.java             |   7 +
 .../mobileharness/fe/v6/service/test/BUILD    |  35 +++++
 .../v6/service/test/NoOpTestServiceLogic.java |  41 ++++++
 .../v6/service/test/OssTestServiceModule.java |  27 ++++
 .../v6/service/test/TestServiceGrpcImpl.java  |  63 ++++++++
 .../fe/v6/service/test/TestServiceLogic.java  |  33 +++++
 .../devtools/mobileharness/fe/v6/server/BUILD |   1 +
 .../fe/v6/server/OssFeServerTest.java         |   2 +
 42 files changed, 600 insertions(+), 293 deletions(-)
 create mode 100644 src/devtools/mobileharness/fe/v6/angular/app/core/models/common_models.ts
 create mode 100644 src/java/com/google/devtools/mobileharness/fe/v6/service/test/BUILD
 create mode 100644 src/java/com/google/devtools/mobileharness/fe/v6/service/test/NoOpTestServiceLogic.java
 create mode 100644 src/java/com/google/devtools/mobileharness/fe/v6/service/test/OssTestServiceModule.java
 create mode 100644 src/java/com/google/devtools/mobileharness/fe/v6/service/test/TestServiceGrpcImpl.java
 create mode 100644 src/java/com/google/devtools/mobileharness/fe/v6/service/test/TestServiceLogic.java

diff --git a/src/devtools/mobileharness/fe/v6/angular/app/app.ts b/src/devtools/mobileharness/fe/v6/angular/app/app.ts
index 7c645ce0c4..f49a4aa3d6 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/app.ts
+++ b/src/devtools/mobileharness/fe/v6/angular/app/app.ts
@@ -133,6 +133,12 @@ export class App implements OnDestroy {
       this.showContent = true;
     } else if (path === 'hosts/:hostName' && params['hostName']) {
       this.showContent = true;
+    } else if (
+      path === 'jobs/:jobId/tests/:id' &&
+      params['id'] &&
+      params['jobId']
+    ) {
+      this.showContent = true;
     } else {
       this.showContent = false;
     }
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/app_routes.ts b/src/devtools/mobileharness/fe/v6/angular/app/app_routes.ts
index 272faed563..02c017e70e 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/app_routes.ts
+++ b/src/devtools/mobileharness/fe/v6/angular/app/app_routes.ts
@@ -1,9 +1,28 @@
-import {Routes} from '@angular/router';
+import {inject} from '@angular/core';
+import {CanActivateFn, Router, Routes} from '@angular/router';
 import {DevHarnessPage} from './features/dev_harness/dev_harness_page';
 import {DeviceDetailPage} from './features/device_detail/device_detail_page';
 import {HostDetail} from './features/host_detail/host_detail';
 import {TestDetail} from './features/test_detail/test_detail';
 
+/**
+ * Router Activation Guard (Sanitizes the browser address bar on initialization or external entrance).
+ * If a user enters a Test/Job detail page from outside the guest app (e.g. bookmarks or direct links)
+ * with '?universe=xxx' query param, this guard intercepts the navigation, strips universe from UrlTree,
+ * and performs a clean redirection.
+ * Note: This gates external/initial entries, while url_utils manages internal nav link transitions,
+ * and universeInterceptor shields the backend HTTP request layer.
+ */
+const stripUniverseGuard: CanActivateFn = (route, state) => {
+  const router = inject(Router);
+  if (route.queryParamMap.has('universe')) {
+    const urlTree = router.parseUrl(state.url);
+    delete urlTree.queryParams['universe'];
+    return urlTree;
+  }
+  return true;
+};
+
 /**
  * The application routes.
  */
@@ -21,8 +40,9 @@ export const routes: Routes = [
     component: HostDetail,
   },
   {
-    path: 'tests/:id',
+    path: 'jobs/:jobId/tests/:id',
     component: TestDetail,
+    canActivate: [stripUniverseGuard],
   },
   {
     path: '',
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/core/interceptors/universe_interceptor.ts b/src/devtools/mobileharness/fe/v6/angular/app/core/interceptors/universe_interceptor.ts
index 4f3a0e15d5..2f2389d463 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/core/interceptors/universe_interceptor.ts
+++ b/src/devtools/mobileharness/fe/v6/angular/app/core/interceptors/universe_interceptor.ts
@@ -5,7 +5,12 @@ export const universeInterceptor: HttpInterceptorFn = (req, next) => {
   const urlParams = new URLSearchParams(window.location.search);
   const universe = urlParams.get('universe');
 
-  if (universe) {
+  // NETWORK LAYER INTERCEPTION: Exclude '/tests' and '/jobs' requests.
+  // The gRPC backends for test/job detail (e.g. GetTestRequest) do not support the 'universe' field.
+  // Injecting it would trigger a backend GFEs / HTTP-transcoding 400 Bad Request error.
+  // Note: This operates at the HTTP/network request level, while stripUniverseGuard and url_utils
+  // sanitize the browser navigation URL bar parameters to keep the addresses clean.
+  if (universe && !req.url.includes('/tests') && !req.url.includes('/jobs')) {
     const patchedReq = req.clone({
       setParams: {
         'universe': universe,
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/core/models/common_models.ts b/src/devtools/mobileharness/fe/v6/angular/app/core/models/common_models.ts
new file mode 100644
index 0000000000..40c91e9b34
--- /dev/null
+++ b/src/devtools/mobileharness/fe/v6/angular/app/core/models/common_models.ts
@@ -0,0 +1,103 @@
+/**
+ * @fileoverview Shared core data models and enums mapping to MobileHarness protos.
+ */
+
+/** gRPC-friendly status of a test. */
+export enum TestStatus {
+  TEST_STATUS_UNSPECIFIED = 'TEST_STATUS_UNSPECIFIED',
+  TEST_STATUS_NEW = 'TEST_STATUS_NEW',
+  TEST_STATUS_ASSIGNED = 'TEST_STATUS_ASSIGNED',
+  TEST_STATUS_RUNNING = 'TEST_STATUS_RUNNING',
+  TEST_STATUS_DONE = 'TEST_STATUS_DONE',
+  TEST_STATUS_SUSPENDED = 'TEST_STATUS_SUSPENDED',
+}
+
+/** gRPC-friendly result of a test. */
+export enum TestResult {
+  TEST_RESULT_UNSPECIFIED = 'TEST_RESULT_UNSPECIFIED',
+  TEST_RESULT_PASS = 'TEST_RESULT_PASS',
+  TEST_RESULT_FAIL = 'TEST_RESULT_FAIL',
+  TEST_RESULT_ERROR = 'TEST_RESULT_ERROR',
+  TEST_RESULT_TIMEOUT = 'TEST_RESULT_TIMEOUT',
+  TEST_RESULT_ABORT = 'TEST_RESULT_ABORT',
+  TEST_RESULT_SKIP = 'TEST_RESULT_SKIP',
+}
+
+/** gRPC-friendly status of a job. */
+export enum JobStatus {
+  JOB_STATUS_UNSPECIFIED = 'JOB_STATUS_UNSPECIFIED',
+  JOB_STATUS_NEW = 'JOB_STATUS_NEW',
+  JOB_STATUS_RUNNING = 'JOB_STATUS_RUNNING',
+  JOB_STATUS_DONE = 'JOB_STATUS_DONE',
+  JOB_STATUS_SUSPENDED = 'JOB_STATUS_SUSPENDED',
+  JOB_STATUS_ASSIGNED = 'JOB_STATUS_ASSIGNED',
+}
+
+/** gRPC-friendly result of a job. */
+export enum JobResult {
+  JOB_RESULT_UNSPECIFIED = 'JOB_RESULT_UNSPECIFIED',
+  JOB_RESULT_PASS = 'JOB_RESULT_PASS',
+  JOB_RESULT_FAIL = 'JOB_RESULT_FAIL',
+  JOB_RESULT_ERROR = 'JOB_RESULT_ERROR',
+  JOB_RESULT_TIMEOUT = 'JOB_RESULT_TIMEOUT',
+  JOB_RESULT_ABORT = 'JOB_RESULT_ABORT',
+  JOB_RESULT_SKIP = 'JOB_RESULT_SKIP',
+}
+
+/** gRPC-friendly status of a session. */
+export enum SessionStatus {
+  SESSION_STATUS_UNSPECIFIED = 'SESSION_STATUS_UNSPECIFIED',
+  SESSION_STATUS_NEW = 'SESSION_STATUS_NEW',
+  SESSION_STATUS_RUNNING = 'SESSION_STATUS_RUNNING',
+  SESSION_STATUS_DONE = 'SESSION_STATUS_DONE',
+}
+
+/** gRPC-friendly result of a session. */
+export enum SessionResult {
+  SESSION_RESULT_UNSPECIFIED = 'SESSION_RESULT_UNSPECIFIED',
+  SESSION_RESULT_PASS = 'SESSION_RESULT_PASS',
+  SESSION_RESULT_FAIL = 'SESSION_RESULT_FAIL',
+  SESSION_RESULT_ERROR = 'SESSION_RESULT_ERROR',
+  SESSION_RESULT_TIMEOUT = 'SESSION_RESULT_TIMEOUT',
+  SESSION_RESULT_ABORT = 'SESSION_RESULT_ABORT',
+  SESSION_RESULT_SKIP = 'SESSION_RESULT_SKIP',
+}
+
+/** Shared definition for troubleshooting error. */
+export declare interface ErrorInfo {
+  message: string;
+  trace?: string;
+}
+
+/** Shared definition for troubleshooting warning. */
+export declare interface WarningInfo {
+  message: string;
+  trace?: string;
+}
+
+/** Shared execution details mapped to the "Execution Details" UI cards. */
+export declare interface ExecutionDetails {
+  user?: string;
+  actualUser?: string;
+  cloudLogLink?: string;
+  createTime: string;
+  startTime?: string;
+  endTime?: string;
+  updateTime?: string;
+}
+
+/** Collection container for error entry items. */
+export declare interface Errors {
+  error?: ErrorInfo[];
+}
+
+/** Collection container for warning entry items. */
+export declare interface Warnings {
+  warning?: WarningInfo[];
+}
+
+/** Troubleshooting layout card details shared by both Jobs and Tests. */
+export declare interface Troubleshooting {
+  warnings?: Warnings;
+  resultCause?: Errors;
+}
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/core/models/test_overview.ts b/src/devtools/mobileharness/fe/v6/angular/app/core/models/test_overview.ts
index 2b87e69092..756f5370c7 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/core/models/test_overview.ts
+++ b/src/devtools/mobileharness/fe/v6/angular/app/core/models/test_overview.ts
@@ -3,69 +3,28 @@
  * presentation in the UI, corresponding to test details in mobileharness.
  */
 
+import {
+  ErrorInfo,
+  ExecutionDetails,
+  JobResult,
+  JobStatus,
+  SessionResult,
+  SessionStatus,
+  TestResult,
+  TestStatus,
+  Troubleshooting,
+  WarningInfo,
+} from './common_models';
 import {TimeBreakdown} from './timeline';
-export type {TimeBreakdown};
-
-/** gRPC-friendly status of a test, decoupled from its result. */
-export enum TestStatus {
-  TEST_STATUS_UNSPECIFIED = 'TEST_STATUS_UNSPECIFIED',
-  TEST_STATUS_NEW = 'TEST_STATUS_NEW',
-  TEST_STATUS_ASSIGNED = 'TEST_STATUS_ASSIGNED',
-  TEST_STATUS_RUNNING = 'TEST_STATUS_RUNNING',
-  TEST_STATUS_DONE = 'TEST_STATUS_DONE',
-  TEST_STATUS_SUSPENDED = 'TEST_STATUS_SUSPENDED',
-}
-
-/** gRPC-friendly result of a test. */
-export enum TestResult {
-  TEST_RESULT_UNSPECIFIED = 'TEST_RESULT_UNSPECIFIED',
-  TEST_RESULT_PASS = 'TEST_RESULT_PASS',
-  TEST_RESULT_FAIL = 'TEST_RESULT_FAIL',
-  TEST_RESULT_ERROR = 'TEST_RESULT_ERROR',
-  TEST_RESULT_TIMEOUT = 'TEST_RESULT_TIMEOUT',
-  TEST_RESULT_ABORT = 'TEST_RESULT_ABORT',
-  TEST_RESULT_SKIP = 'TEST_RESULT_SKIP',
-}
-
-/** gRPC-friendly status of a job, decoupled from its result. */
-export enum JobStatus {
-  JOB_STATUS_UNSPECIFIED = 'JOB_STATUS_UNSPECIFIED',
-  JOB_STATUS_NEW = 'JOB_STATUS_NEW',
-  JOB_STATUS_RUNNING = 'JOB_STATUS_RUNNING',
-  JOB_STATUS_DONE = 'JOB_STATUS_DONE',
-  JOB_STATUS_SUSPENDED = 'JOB_STATUS_SUSPENDED',
-}
-
-/** gRPC-friendly result of a job. */
-export enum JobResult {
-  JOB_RESULT_UNSPECIFIED = 'JOB_RESULT_UNSPECIFIED',
-  JOB_RESULT_PASS = 'JOB_RESULT_PASS',
-  JOB_RESULT_FAIL = 'JOB_RESULT_FAIL',
-  JOB_RESULT_ERROR = 'JOB_RESULT_ERROR',
-  JOB_RESULT_TIMEOUT = 'JOB_RESULT_TIMEOUT',
-  JOB_RESULT_ABORT = 'JOB_RESULT_ABORT',
-  JOB_RESULT_SKIP = 'JOB_RESULT_SKIP',
-}
-
-/** gRPC-friendly status of a session, decoupled from its result. */
-export enum SessionStatus {
-  SESSION_STATUS_UNSPECIFIED = 'SESSION_STATUS_UNSPECIFIED',
-  SESSION_STATUS_NEW = 'SESSION_STATUS_NEW',
-  SESSION_STATUS_RUNNING = 'SESSION_STATUS_RUNNING',
-  SESSION_STATUS_DONE = 'SESSION_STATUS_DONE',
-}
-
-/** gRPC-friendly result of a session. */
-export enum SessionResult {
-  SESSION_RESULT_UNSPECIFIED = 'SESSION_RESULT_UNSPECIFIED',
-  SESSION_RESULT_PASS = 'SESSION_RESULT_PASS',
-  SESSION_RESULT_FAIL = 'SESSION_RESULT_FAIL',
-  SESSION_RESULT_ERROR = 'SESSION_RESULT_ERROR',
-  SESSION_RESULT_TIMEOUT = 'SESSION_RESULT_TIMEOUT',
-  SESSION_RESULT_ABORT = 'SESSION_RESULT_ABORT',
-  SESSION_RESULT_SKIP = 'SESSION_RESULT_SKIP',
-}
-
+export {
+  JobResult,
+  JobStatus,
+  SessionResult,
+  SessionStatus,
+  TestResult,
+  TestStatus,
+};
+export type {ExecutionDetails, TimeBreakdown, Troubleshooting};
 /** Minimal reference to the parent job. */
 export interface ParentJobInfo {
   id: string;
@@ -74,63 +33,24 @@ export interface ParentJobInfo {
   result?: JobResult;
   spongeLink?: string;
 }
-
 /** One device the test was executed on. */
 export interface TestDevice {
   id: string;
   type: string;
 }
-
 /** Wrapper for a list of devices. */
 export interface TestDevices {
   device?: TestDevice[];
 }
-
 /** The host the test ran on. */
 export interface HostInfo {
   name: string;
   ip: string;
 }
-
-/** Execution details. */
-export interface ExecutionDetails {
-  user?: string;
-  actualUser?: string;
-  cloudLogLink?: string;
-  createTime: string;
-  startTime?: string;
-  endTime?: string;
-  lastUpdateTime?: string;
-}
-
-/** One non-fatal warning surfaced during execution. */
-export interface TestWarning {
-  message: string;
-  trace?: string;
-}
-
-/** Wrapper for a list of warnings. */
-export interface TestWarnings {
-  warning?: TestWarning[];
-}
-
-/** One error that contributed to a non-passing test result. */
-export interface TestError {
-  message: string;
-  trace?: string;
-}
-
-/** Wrapper for a list of errors. */
-export interface TestErrors {
-  error?: TestError[];
-}
-
-/** Troubleshooting details (warnings & errors). */
-export interface Troubleshooting {
-  warnings?: TestWarnings;
-  resultCause?: TestErrors;
-}
-
+/** Alias for a warning info item belonging to a test. */
+export type TestWarning = WarningInfo;
+/** Alias for an error info item belonging to a test. */
+export type TestError = ErrorInfo;
 /** A lightweight summary of a test (for nested sub-tests). */
 export interface TestSummary {
   id: string;
@@ -141,18 +61,15 @@ export interface TestSummary {
   endTime?: string;
   devices?: TestDevices;
 }
-
 /** Wrapper for a list of test summaries. */
 export interface TestSummaries {
   test?: TestSummary[];
 }
-
 /** Nested sub-tests list details. */
 export interface SubTestsInfo {
   rootTestId?: string;
   subTests?: TestSummaries;
 }
-
 /** The full overview data for a single test (matches TestDetail proto). */
 export interface TestOverviewData {
   id: string;
@@ -168,25 +85,23 @@ export interface TestOverviewData {
   subTestsInfo?: SubTestsInfo;
   timingBreakdown?: TimeBreakdown;
 }
-
 /** Request structure for the getTest API. */
 export interface GetTestRequest {
   testId: string;
   subTestId?: string;
+  jobId: string;
 }
-
 /** Request structure for the getTestLog API. */
 export interface GetTestLogRequest {
   testId: string;
   offset: number;
   length: number;
+  jobId: string;
 }
-
 /** Response structure for the getTest API. */
 export interface GetTestResponse {
   test: TestOverviewData;
 }
-
 /** Response structure for the getTestLog API. */
 export interface GetTestLogResponse {
   logContent: string;
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_error.ts b/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_error.ts
index 0a95d69ffb..d561160f9f 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_error.ts
+++ b/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_error.ts
@@ -38,7 +38,7 @@ export const SCENARIO_TEST_ERROR: MockTestScenario = {
       createTime: '2025-07-09T10:15:00Z',
       startTime: '2025-07-09T10:15:05Z',
       endTime: '2025-07-09T10:15:10Z',
-      lastUpdateTime: '2025-07-09T10:15:10Z',
+      updateTime: '2025-07-09T10:15:10Z',
       user: 'dafeni',
       actualUser: 'dafeni@google.com',
     },
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_failed.ts b/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_failed.ts
index 662a49d4b6..4b989d2043 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_failed.ts
+++ b/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_failed.ts
@@ -39,7 +39,7 @@ export const SCENARIO_TEST_FAILED: MockTestScenario = {
       createTime: '2025-07-09T10:12:10Z',
       startTime: '2025-07-09T10:12:10Z',
       endTime: '2025-07-09T10:12:40Z',
-      lastUpdateTime: '2025-07-09T10:12:40Z',
+      updateTime: '2025-07-09T10:12:40Z',
       user: 'dafeni',
       actualUser: 'dafeni@google.com',
     },
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_inprogress.ts b/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_inprogress.ts
index e51491bab0..10d89fde2d 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_inprogress.ts
+++ b/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_inprogress.ts
@@ -45,7 +45,7 @@ export const SCENARIO_TEST_IN_PROGRESS: MockTestScenario = {
       createTime: '2025-07-09T11:30:10Z',
       startTime: '2025-07-09T11:30:15Z',
       endTime: '2025-07-09T11:30:18Z',
-      lastUpdateTime: '2025-07-09T11:30:18Z',
+      updateTime: '2025-07-09T11:30:18Z',
       user: 'dafeni',
       actualUser: 'dafeni@google.com',
     },
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_longname.ts b/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_longname.ts
index e528658faa..a1c56b7b1f 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_longname.ts
+++ b/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_longname.ts
@@ -38,7 +38,7 @@ export const SCENARIO_TEST_LONG_NAME: MockTestScenario = {
       createTime: '2025-07-09T10:11:15Z',
       startTime: '2025-07-09T10:11:15Z',
       endTime: '2025-07-09T10:11:25Z',
-      lastUpdateTime: '2025-07-09T10:11:25Z',
+      updateTime: '2025-07-09T10:11:25Z',
       user: 'dafeni',
       actualUser: 'dafeni@google.com',
     },
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_multiple_errors_warnings.ts b/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_multiple_errors_warnings.ts
index 515e7330b7..d94c51b585 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_multiple_errors_warnings.ts
+++ b/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_multiple_errors_warnings.ts
@@ -38,7 +38,7 @@ export const SCENARIO_TEST_MULTIPLE_ERRORS_WARNINGS: MockTestScenario = {
       createTime: '2025-07-09T10:15:00Z',
       startTime: '2025-07-09T10:15:05Z',
       endTime: '2025-07-09T10:15:20Z',
-      lastUpdateTime: '2025-07-09T10:15:20Z',
+      updateTime: '2025-07-09T10:15:20Z',
       user: 'dafeni',
       actualUser: 'dafeni@google.com',
     },
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_passed.ts b/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_passed.ts
index 8b3d87afbc..4f45006481 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_passed.ts
+++ b/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_passed.ts
@@ -38,7 +38,7 @@ export const SCENARIO_TEST_PASSED: MockTestScenario = {
       createTime: '2025-07-09T10:11:15Z',
       startTime: '2025-07-09T10:11:15Z',
       endTime: '2025-07-09T10:11:25Z',
-      lastUpdateTime: '2025-07-09T10:11:25Z',
+      updateTime: '2025-07-09T10:11:25Z',
       user: 'dafeni',
       actualUser: 'dafeni@google.com',
     },
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_skipped.ts b/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_skipped.ts
index 61cfa99644..eaee6d9b78 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_skipped.ts
+++ b/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_skipped.ts
@@ -37,7 +37,7 @@ export const SCENARIO_TEST_SKIPPED: MockTestScenario = {
     executionDetails: {
       createTime: '2025-07-09T10:11:15Z',
       endTime: '2025-07-09T10:11:16Z',
-      lastUpdateTime: '2025-07-09T10:11:16Z',
+      updateTime: '2025-07-09T10:11:16Z',
       user: 'dafeni',
       actualUser: 'dafeni@google.com',
     },
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_suspended.ts b/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_suspended.ts
index efd093b6cf..71dac1eddf 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_suspended.ts
+++ b/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_suspended.ts
@@ -36,7 +36,7 @@ export const SCENARIO_TEST_SUSPENDED: MockTestScenario = {
     },
     executionDetails: {
       createTime: '2025-07-09T11:40:00Z',
-      lastUpdateTime: '2025-07-09T11:45:00Z',
+      updateTime: '2025-07-09T11:45:00Z',
       user: 'blaze-user',
       actualUser: 'mobileharness-ci-runner',
     },
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_timeout.ts b/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_timeout.ts
index 8291189906..d66ab1d9c8 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_timeout.ts
+++ b/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_timeout.ts
@@ -38,7 +38,7 @@ export const SCENARIO_TEST_TIMEOUT: MockTestScenario = {
       createTime: '2025-07-09T10:20:00Z',
       startTime: '2025-07-09T10:20:05Z',
       endTime: '2025-07-09T10:25:05Z',
-      lastUpdateTime: '2025-07-09T10:25:05Z',
+      updateTime: '2025-07-09T10:25:05Z',
       user: 'dafeni',
       actualUser: 'dafeni@google.com',
     },
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_warning.ts b/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_warning.ts
index 2069b16c38..ce8ea7072e 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_warning.ts
+++ b/src/devtools/mobileharness/fe/v6/angular/app/core/services/mock_data/tests/overview_warning.ts
@@ -38,7 +38,7 @@ export const SCENARIO_TEST_WARNING: MockTestScenario = {
       createTime: '2025-07-09T10:11:15Z',
       startTime: '2025-07-09T10:11:15Z',
       endTime: '2025-07-09T10:11:25Z',
-      lastUpdateTime: '2025-07-09T10:11:25Z',
+      updateTime: '2025-07-09T10:11:25Z',
       user: 'dafeni',
       actualUser: 'dafeni@google.com',
     },
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/core/services/test/fake_test_service.ts b/src/devtools/mobileharness/fe/v6/angular/app/core/services/test/fake_test_service.ts
index 8b77da7ccd..a50abec986 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/core/services/test/fake_test_service.ts
+++ b/src/devtools/mobileharness/fe/v6/angular/app/core/services/test/fake_test_service.ts
@@ -19,7 +19,10 @@ import {TestService} from './test_service';
   providedIn: 'root',
 })
 export class FakeTestService extends TestService {
-  private readonly logLimits = new Map<string, number>();
+  // Tracks test IDs that have finished streaming all their simulated running logs.
+  private readonly completedRunningTests = new Set<string>();
+  // Tracks the number of generated lines for running tests.
+  private readonly runningLineOffsets = new Map<string, number>();
 
   constructor() {
     super();
@@ -27,6 +30,9 @@ export class FakeTestService extends TestService {
 
   /**
    * Retrieves the detailed overview data for a specific test by its ID from the mock dataset.
+   *
+   * @param request The request containing the test ID or sub-test ID.
+   * @return An Observable emitting the TestOverviewData.
    */
   override getTest(request: GetTestRequest): Observable<TestOverviewData> {
     const id = request.subTestId || request.testId;
@@ -34,9 +40,23 @@ export class FakeTestService extends TestService {
       (s) => s.id === id || s.overview.id === id,
     );
     if (scenario) {
+      let status = scenario.overview.status;
+      // In production, running tests eventually transition to DONE.
+      // Once all logs of a running test have been streamed, simulate test completion.
+      if (
+        status === TestStatus.TEST_STATUS_RUNNING &&
+        this.completedRunningTests.has(scenario.id)
+      ) {
+        status = TestStatus.TEST_STATUS_DONE;
+      }
+      console.log(
+        `[FakeTestService] getTest id=${scenario.id} status=${status} completedHas=${this.completedRunningTests.has(scenario.id)}`,
+      );
+
       const execDetails = scenario.overview.executionDetails;
       const overview: TestOverviewData = {
         ...scenario.overview,
+        status,
         executionDetails: execDetails
           ? {
               ...execDetails,
@@ -53,14 +73,13 @@ export class FakeTestService extends TestService {
   }
 
   /**
-   * Mock implementation of getTestLog that streams log chunks from the test scenario.
+   * Mock implementation of getTestLog that streams log chunks progressively from the test scenario.
    */
   override getTestLog(
     request: GetTestLogRequest,
   ): Observable<GetTestLogResponse> {
     const id = request.testId;
-    const offset = request.offset;
-    const length = request.length;
+    const numOffset = Number(request.offset) || 0;
     const scenario = MOCK_TEST_SCENARIOS.find(
       (s) => s.id === id || s.overview.id === id,
     );
@@ -68,40 +87,60 @@ export class FakeTestService extends TestService {
       const fullLog = scenario.log || '';
       const status = scenario.overview.status;
 
-      let visibleLog = '';
+      // When starting fresh from offset 0, reset completion status to simulate a new run.
+      if (numOffset === 0) {
+        this.completedRunningTests.delete(scenario.id);
+        this.runningLineOffsets.delete(scenario.id);
+      }
+
       if (status === TestStatus.TEST_STATUS_RUNNING) {
-        // Stream line-by-line if test is active
         const lines = fullLog.split('\n');
-        if (Number(offset) === 0) {
-          this.logLimits.set(id, Math.min(2, lines.length));
-        } else {
-          const currentLineLimit = this.logLimits.get(id) || 0;
-          const newLineLimit = Math.min(currentLineLimit + 2, lines.length);
-          this.logLimits.set(id, newLineLimit);
+        const currentLineOffset = this.runningLineOffsets.get(scenario.id) || 0;
+        // Progressively add 3 lines on each poll to simulate production logs growing.
+        const newLineOffset = Math.min(currentLineOffset + 3, lines.length);
+        this.runningLineOffsets.set(scenario.id, newLineOffset);
+
+        const visibleLog =
+          lines.slice(0, newLineOffset).join('\n') +
+          (newLineOffset < lines.length ? '\n' : '');
+        const chunk = visibleLog.substring(numOffset);
+        const nextOffset = numOffset + chunk.length;
+
+        console.log(
+          `[FakeTestService] getTestLog id=${scenario.id} offset=${numOffset} chunkLen=${chunk.length} nextOffset=${nextOffset} fullLogLen=${fullLog.length} linesEmitted=${newLineOffset}/${lines.length}`,
+        );
+
+        if (newLineOffset >= lines.length) {
+          this.completedRunningTests.add(scenario.id);
         }
-        const visibleLineLimit = this.logLimits.get(id) || lines.length;
-        visibleLog = lines.slice(0, visibleLineLimit).join('\n');
+
+        const hasMore = false;
+
+        return of({
+          logContent: chunk,
+          nextOffset,
+          hasMore,
+        }).pipe(delay(300));
       } else {
-        // If test is DONE/terminated, return the entire log in one call (adaptive return)
-        visibleLog = fullLog;
-      }
+        // If test is DONE/terminated, return remaining log content.
+        const chunk = fullLog.substring(numOffset);
+        const nextOffset = numOffset + chunk.length;
+        const hasMore = false;
 
-      const chunk = visibleLog.substring(
-        Number(offset),
-        Number(offset) + length,
-      );
-      const nextOffset = Number(offset) + chunk.length;
-      const hasMore = nextOffset < visibleLog.length;
+        console.log(
+          `[FakeTestService] getTestLog DONE id=${scenario.id} offset=${numOffset} chunkLen=${chunk.length} nextOffset=${nextOffset} fullLogLen=${fullLog.length}`,
+        );
 
-      return of({
-        logContent: chunk,
-        nextOffset,
-        hasMore,
-      }).pipe(delay(500));
+        return of({
+          logContent: chunk,
+          nextOffset,
+          hasMore,
+        }).pipe(delay(300));
+      }
     } else {
       return throwError(
         () => new Error(`Test with ID '${id}' not found in mock data.`),
-      ).pipe(delay(500));
+      ).pipe(delay(300));
     }
   }
 }
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/core/services/test/http_test_service.ts b/src/devtools/mobileharness/fe/v6/angular/app/core/services/test/http_test_service.ts
index aff5d95438..bbd3860dae 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/core/services/test/http_test_service.ts
+++ b/src/devtools/mobileharness/fe/v6/angular/app/core/services/test/http_test_service.ts
@@ -25,12 +25,12 @@ export class HttpTestService extends TestService {
   }
 
   override getTest(request: GetTestRequest): Observable<TestOverviewData> {
-    let url = `${this.apiUrl}/${request.testId}`;
-    if (request.subTestId) {
-      url += `?sub_test_id=${request.subTestId}`;
-    }
     return this.http
-      .get<GetTestResponse>(url)
+      .post<GetTestResponse>(`${this.apiUrl}/${request.testId}:getTest`, {
+        'test_id': request.testId,
+        'sub_test_id': request.subTestId,
+        'job_id': request.jobId,
+      })
       .pipe(map((response) => response.test));
   }
 
@@ -40,8 +40,10 @@ export class HttpTestService extends TestService {
     return this.http.post<GetTestLogResponse>(
       `${this.apiUrl}/${request.testId}:getTestLog`,
       {
+        'test_id': request.testId,
         'offset': request.offset,
         'length': request.length,
+        'job_id': request.jobId,
       },
     );
   }
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/core/utils/url_utils.ts b/src/devtools/mobileharness/fe/v6/angular/app/core/utils/url_utils.ts
index 12afd49217..6273626907 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/core/utils/url_utils.ts
+++ b/src/devtools/mobileharness/fe/v6/angular/app/core/utils/url_utils.ts
@@ -16,10 +16,24 @@ export function navigateWithPreservedParams(
   const newUrl = new URL(url, window.location.origin);
   // Get current query parameters from the active route.
   const currentParams = route.snapshot.queryParamMap;
+  // CLIENT-SIDE ROUTER TRANSITION SANITIZATION:
+  // Remove 'universe' when navigating to test or job details pages.
+  // This prevents propagating key parameters like 'universe=google_1p' from monitoring pages
+  // (like host/device details where universe is valid) to test/job details pages where they're invalid.
+  // Note: This acts on internal application nav link clicks, while stripUniverseGuard sanitizes
+  // external entrypoints, and universeInterceptor manages the HTTP request layer.
+  const isJobOrTest = /\/(jobs|tests)\//.test(newUrl.pathname);
+  if (isJobOrTest) {
+    newUrl.searchParams.delete('universe');
+  }
+
   // Merge the current query parameters into the new URL if they are not already present.
   // Note: The new URL parameters have high priority and will NOT be overridden by current parameters.
   // This ensures parameters like `is_embedded_mode` are preserved across navigations if not specified in new URL.
   for (const key of currentParams.keys) {
+    if (key === 'universe' && isJobOrTest) {
+      continue;
+    }
     if (!newUrl.searchParams.has(key)) {
       const values = currentParams.getAll(key);
       for (const value of values) {
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/features/dev_harness/dev_harness_page.ng.html b/src/devtools/mobileharness/fe/v6/angular/app/features/dev_harness/dev_harness_page.ng.html
index 74d58726cc..cfdb59d61c 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/features/dev_harness/dev_harness_page.ng.html
+++ b/src/devtools/mobileharness/fe/v6/angular/app/features/dev_harness/dev_harness_page.ng.html
@@ -38,7 +38,7 @@ <h3 class="sidebar-title mt-6" (click)="toggleTestScenarios()">
     @if (!testCollapsed()) {
       <nav class="sidebar-nav">
         @for (scenario of testScenarios; track scenario.id) {
-          <a [routerLink]="['/tests', scenario.id]" queryParamsHandling="preserve" class="nav-link">
+          <a [routerLink]="['/jobs', scenario.overview.job?.id || 'job_123', 'tests', scenario.id]" queryParamsHandling="preserve" class="nav-link">
             {{ scenario.scenarioName }}
           </a>
         }
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_log_tab/test_log_tab.ng.html b/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_log_tab/test_log_tab.ng.html
index e3ebf95947..b6e71e31cb 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_log_tab/test_log_tab.ng.html
+++ b/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_log_tab/test_log_tab.ng.html
@@ -10,7 +10,9 @@ <h3 class="log-card-title">Test Log</h3>
   <div class="log-viewer-container">
     <div class="log-viewer-viewport" [style.height.px]="viewportHeight()" #logViewport>
       @for (line of logLines(); track $index) {
-        <div class="log-line">{{ line }}</div>
+        <div class="log-line">
+          {{ line }}
+        </div>
       }
     </div>
   </div>
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_log_tab/test_log_tab.spec.ts b/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_log_tab/test_log_tab.spec.ts
index bf6c07eddf..0b961af5e5 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_log_tab/test_log_tab.spec.ts
+++ b/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_log_tab/test_log_tab.spec.ts
@@ -24,10 +24,13 @@ import {TestLogTab} from './test_log_tab';
   standalone: true,
   imports: [TestLogTab],
   changeDetection: ChangeDetectionStrategy.OnPush,
-  template: `<app-test-log-tab [testId]="testId"></app-test-log-tab>`,
+  template: `<app-test-log-tab [testId]="testId" [jobId]="jobId" [cloudLogLink]="cloudLogLink" [initialStatus]="initialStatus"></app-test-log-tab>`,
 })
 class TestHostComponent {
   testId!: string;
+  jobId = 'job_123';
+  cloudLogLink = 'http://cloud-log-link';
+  initialStatus = TestStatus.TEST_STATUS_DONE;
 }
 
 describe('TestLogTab Component', () => {
@@ -75,11 +78,10 @@ describe('TestLogTab Component', () => {
     });
 
     it('should fetch logs and bind inputs correctly', () => {
-      expect(mockTestService.getTest).toHaveBeenCalledWith({
-        testId: 'test_123',
-      });
+      expect(mockTestService.getTest).not.toHaveBeenCalled();
       expect(mockTestService.getTestLog).toHaveBeenCalledWith({
         testId: 'test_123',
+        jobId: 'job_123',
         offset: 0,
         length: 100000,
       });
@@ -132,6 +134,9 @@ describe('TestLogTab Component', () => {
 
       runningFixture = TestBed.createComponent(TestHostComponent);
       runningFixture.componentInstance.testId = 'test_running';
+      runningFixture.componentInstance.jobId = 'job_123';
+      runningFixture.componentInstance.initialStatus =
+        TestStatus.TEST_STATUS_RUNNING;
       runningComponent = runningFixture.debugElement.query(
         By.directive(TestLogTab),
       ).componentInstance;
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_log_tab/test_log_tab.ts b/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_log_tab/test_log_tab.ts
index 7822f4cdb5..db2629ba52 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_log_tab/test_log_tab.ts
+++ b/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_log_tab/test_log_tab.ts
@@ -37,14 +37,20 @@ const CHUNK_SIZE = 100000;
 export class TestLogTab implements OnInit {
   /** The unique test ID passed from the parent component. */
   readonly testId = input.required<string>();
+  readonly jobId = input.required<string>();
 
   private readonly testService = inject(TEST_SERVICE);
   private readonly destroyRef = inject(DestroyRef);
 
   /** Signal holding the array of log lines currently rendered in the log viewport. */
   readonly logLines = signal<string[]>(['Loading logs...']);
-  /** Signal holding the external cloud log explorer URL for this test. */
-  readonly cloudLogLink = signal<string>('');
+  /** The external cloud log explorer URL for this test. */
+  readonly cloudLogLink = input<string>('');
+
+  /** The initial test status of the test. */
+  readonly initialStatus = input<TestStatus>(
+    TestStatus.TEST_STATUS_UNSPECIFIED,
+  );
 
   /** Buffer preserving incomplete line string fragments across network fetch boundaries. */
   private trailingBuffer = '';
@@ -67,7 +73,7 @@ export class TestLogTab implements OnInit {
   });
 
   /** Reference to the log viewer scroll container. */
-  readonly logViewport = viewChild<ElementRef<HTMLElement>>('logViewport');
+  readonly logViewport = viewChild<ElementRef<HTMLDivElement>>('logViewport');
 
   constructor() {
     effect(() => {
@@ -87,17 +93,11 @@ export class TestLogTab implements OnInit {
   private startLiveLogStreaming() {
     const id = this.testId();
 
-    const initialFetch$: Observable<FetchState> = this.testService
-      .getTest({testId: id})
-      .pipe(
-        concatMap((testDetail) => {
-          const link = testDetail.executionDetails?.cloudLogLink;
-          if (link) {
-            this.cloudLogLink.set(link);
-          }
-          return this.fetchLogChunk(id, 0, testDetail.status);
-        }),
-      );
+    const initialFetch$: Observable<FetchState> = this.fetchLogChunk(
+      id,
+      0,
+      this.initialStatus(),
+    );
 
     initialFetch$
       .pipe(
@@ -110,12 +110,10 @@ export class TestLogTab implements OnInit {
             return this.fetchLogChunk(id, state.offset, state.status);
           } else {
             return timer(POLLING_INTERVAL_MS).pipe(
-              concatMap(() => this.testService.getTest({testId: id})),
+              concatMap(() =>
+                this.testService.getTest({testId: id, jobId: this.jobId()}),
+              ),
               concatMap((testDetail) => {
-                const link = testDetail.executionDetails?.cloudLogLink;
-                if (link) {
-                  this.cloudLogLink.set(link);
-                }
                 return this.fetchLogChunk(id, state.offset, testDetail.status);
               }),
             );
@@ -166,7 +164,12 @@ export class TestLogTab implements OnInit {
     status: TestStatus,
   ): Observable<FetchState> {
     return this.testService
-      .getTestLog({testId: id, offset, length: CHUNK_SIZE})
+      .getTestLog({
+        testId: id,
+        jobId: this.jobId(),
+        offset,
+        length: CHUNK_SIZE,
+      })
       .pipe(
         map((logResp) => {
           return {
@@ -186,6 +189,9 @@ export class TestLogTab implements OnInit {
    * @param newLogs The byte-slice log string to append.
    */
   private appendLogs(newLogs: string) {
+    if (!newLogs) {
+      return;
+    }
     this.logLines.update((current) => {
       const lines =
         current.length === 1 &&
@@ -220,33 +226,17 @@ export class TestLogTab implements OnInit {
     });
   }
 
-  /**
-   * Automatically scrolls the viewport container to the absolute bottom
-   * if the user is currently positioned near the bottom of the log stream.
-   */
   private scrollToBottom() {
-    const el = this.logViewport()?.nativeElement;
-    if (el) {
+    const viewport = this.logViewport();
+    if (viewport) {
       setTimeout(() => {
-        const offsetFromBottom =
-          el.scrollHeight - el.scrollTop - el.clientHeight;
-        if (
-          offsetFromBottom < 250 ||
-          el.scrollHeight <= el.clientHeight + 200
-        ) {
+        try {
+          const el = viewport.nativeElement;
           el.scrollTop = el.scrollHeight;
+        } catch {
+          // Fallback if viewport measurement fails.
         }
-      }, 50);
+      }, 100);
     }
   }
-
-  /**
-   * Tracking function for loop performance optimization.
-   *
-   * @param index The current array index.
-   * @return The numeric index tracking reference.
-   */
-  trackByFn(index: number) {
-    return index;
-  }
 }
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_overview_tab/test_overview_tab.ng.html b/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_overview_tab/test_overview_tab.ng.html
index 6afa2c71f5..18d36f0b45 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_overview_tab/test_overview_tab.ng.html
+++ b/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_overview_tab/test_overview_tab.ng.html
@@ -46,22 +46,23 @@
   }
 
   <!-- Execution Details -->
+  @let details = test().executionDetails;
   <app-info-card id="overview-execution" class="execution-card" cardTitle="Execution Details" [collapsible]="false">
     <div class="info-card-content">
       <dl class="detail-list-grid">
-        @if (test().executionDetails?.user) {
+        @if (details?.user) {
           <dt class="label-with-help">
             <span>Run As</span>
             <mat-icon matTooltip="The identity under which the test actually executed (Run As)." class="help-icon">info_outline</mat-icon>
           </dt>
-          <dd>{{ test().executionDetails?.user }}</dd>
+          <dd>{{ details?.user }}</dd>
         }
-        @if (test().executionDetails?.actualUser) {
+        @if (details?.actualUser) {
           <dt class="label-with-help">
             <span>Actual User</span>
             <mat-icon matTooltip="The credentialed person or system who actually submitted the test." class="help-icon">info_outline</mat-icon>
           </dt>
-          <dd>{{ test().executionDetails?.actualUser }}</dd>
+          <dd>{{ details?.actualUser }}</dd>
         }
         @for (item of timestampKeys; track item.key) {
           @let info = timestampInfoMap()[item.key];
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_overview_tab/test_overview_tab.scss b/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_overview_tab/test_overview_tab.scss
index 6d7176c621..2c8e555bbf 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_overview_tab/test_overview_tab.scss
+++ b/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_overview_tab/test_overview_tab.scss
@@ -269,55 +269,19 @@
   }
 }
 
-.accordion-trigger {
-  width: 100%;
-  display: flex;
-  justify-content: space-between;
-  align-items: center;
-  padding: 16px 24px;
-  background: transparent;
-  border: none;
-  cursor: pointer;
-  text-align: left;
-  font-weight: 600;
-  font-size: 0.875rem;
-  transition: background-color 0.2s ease;
-
-  .item-title {
-    flex: 1;
-    min-width: 0;
-    padding-right: 16px;
-    word-break: break-word;
-  }
-
-  .arrow-icon {
-    flex-shrink: 0;
-    transition: transform 0.2s ease;
-  }
-}
-
-.accordion-item.expanded .accordion-trigger .arrow-icon {
-  transform: rotate(180deg);
-}
-
-.accordion-panel {
-  padding: 0 24px 16px 24px;
+pre.trace-pre {
   position: relative;
-
-  pre.trace-pre {
-    position: relative;
-    padding: 0.75rem;
-    border-radius: 6px;
-    overflow-x: auto;
-    font-size: 0.8rem;
-    white-space: pre-wrap;
-    word-break: break-all;
-    margin: 0;
-    code {
-      font-family: inherit;
-      color: inherit;
-      font-size: inherit;
-    }
+  padding: 0.75rem;
+  border-radius: 6px;
+  overflow-x: auto;
+  font-size: 0.8rem;
+  white-space: pre-wrap;
+  word-break: break-all;
+  margin: 0;
+  code {
+    font-family: inherit;
+    color: inherit;
+    font-size: inherit;
   }
 }
 
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_overview_tab/test_overview_tab.spec.ts b/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_overview_tab/test_overview_tab.spec.ts
index 25a1425cd5..e971351c4f 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_overview_tab/test_overview_tab.spec.ts
+++ b/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_overview_tab/test_overview_tab.spec.ts
@@ -55,7 +55,7 @@ describe('TestOverviewTab Component', () => {
       createTime: '2026-06-08T03:00:00Z',
       startTime: '2026-06-08T03:01:00Z',
       endTime: '2026-06-08T03:05:00Z',
-      lastUpdateTime: '2026-06-08T03:05:00Z',
+      updateTime: '2026-06-08T03:05:00Z',
     },
     properties: {
       'custom_prop_1': 'val1',
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_overview_tab/test_overview_tab.ts b/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_overview_tab/test_overview_tab.ts
index df1a332ae6..317db370b0 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_overview_tab/test_overview_tab.ts
+++ b/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/components/test_overview_tab/test_overview_tab.ts
@@ -72,7 +72,7 @@ export class TestOverviewTab {
     {key: 'createTime', label: 'Create Time'},
     {key: 'startTime', label: 'Start Time'},
     {key: 'endTime', label: 'End Time'},
-    {key: 'lastUpdateTime', label: 'Last Update Time'},
+    {key: 'updateTime', label: 'Last Update Time'},
   ] as const;
 
   /**
@@ -119,23 +119,21 @@ export class TestOverviewTab {
    * @return An object containing raw, display, duration, local, UTC, and elapsed HTML strings.
    */
   getTimestampInfo(
-    key: 'createTime' | 'startTime' | 'endTime' | 'lastUpdateTime',
+    key: 'createTime' | 'startTime' | 'endTime' | 'updateTime',
     test: TestOverviewData,
     baseCreateDate: Date | null = null,
   ) {
-    const details = test.executionDetails;
-    let rawValue: string | undefined = undefined;
-    if (details) {
-      if (key === 'createTime') {
-        rawValue = details.createTime;
-      } else if (key === 'startTime') {
-        rawValue = details.startTime;
-      } else if (key === 'endTime') {
-        rawValue = details.endTime;
-      } else if (key === 'lastUpdateTime') {
-        rawValue = details.lastUpdateTime;
-      }
+    let rawValue: string | undefined;
+    if (key === 'createTime') {
+      rawValue = test.executionDetails?.createTime;
+    } else if (key === 'startTime') {
+      rawValue = test.executionDetails?.startTime;
+    } else if (key === 'endTime') {
+      rawValue = test.executionDetails?.endTime;
+    } else if (key === 'updateTime') {
+      rawValue = test.executionDetails?.updateTime;
     }
+
     const date = rawValue ? dateUtils.parsePdtTimestamp(rawValue) : null;
     const isValid = date && !isNaN(date.getTime());
 
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/models/test_page_ui.ts b/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/models/test_page_ui.ts
index e4c15c09ee..9e142095f0 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/models/test_page_ui.ts
+++ b/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/models/test_page_ui.ts
@@ -4,4 +4,5 @@ import {TestOverviewData} from '@deviceinfra/app/core/models/test_overview';
 export interface TestPageData {
   readonly testOverviewData: TestOverviewData | null;
   readonly error?: string;
+  readonly jobId?: string;
 }
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/test_detail.ng.html b/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/test_detail.ng.html
index 6d11d255b9..95fc76a87f 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/test_detail.ng.html
+++ b/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/test_detail.ng.html
@@ -6,7 +6,8 @@
       <p>{{ data.error }}</p>
       <a routerLink="/dev/device-harness" queryParamsHandling="merge" class="m3-button">Back to Harness</a>
     </div>
-  } @else if (data && data.testOverviewData; as test) {
+  } @else if (data && data.testOverviewData) {
+    @let test = data.testOverviewData;
     <div class="main-card">
         <!-- Breadcrumb Navigation -->
         <header class="card-header">
@@ -120,14 +121,16 @@ <h1 class="device-title" [matTooltip]="test.name">{{ test.name }}</h1>
               </div>
 
                <div class="executed-on-card">
+                @let host = test.host;
+                @let devices = test.devices?.device;
                 <div class="executed-on-title">Executed on</div>
                 <div class="executed-on-grid">
                   <span class="grid-label">Device</span>
-                  @if (test.host && test.host.name && test.host.ip) {
+                  @if (host && host.name && host.ip) {
                     <div class="grid-value value-stack-container">
-                      @for (dev of test.devices?.device; track dev.id) {
+                      @for (dev of devices; track dev.id) {
                         <a app-nav-link
-                          [config]="{type: 'device', hostName: test.host.name, hostIp: test.host.ip, deviceId: dev.id}"
+                          [config]="{type: 'device', hostName: host.name, hostIp: host.ip, deviceId: dev.id}"
                           queryParamsHandling="merge"
                           class="grid-link-value font-mono"
                           [matTooltip]="'View Device Details: ' + dev.id"
@@ -137,25 +140,25 @@ <h1 class="device-title" [matTooltip]="test.name">{{ test.name }}</h1>
                     </div>
                   } @else {
                     <div class="grid-value value-stack-container font-mono">
-                      @for (dev of test.devices?.device; track dev.id) {
+                      @for (dev of devices; track dev.id) {
                         <span>{{ dev.id }}</span>
                       }
                     </div>
                   }
 
-                  @if (test.host && test.host.name && test.host.ip) {
+                  @if (host && host.name && host.ip) {
                     <div class="grid-divider"></div>
 
                     <span class="grid-label">Host</span>
                     <div class="grid-value font-mono">
                       <a app-nav-link
-                        [config]="{type: 'host', hostName: test.host.name, hostIp: test.host.ip}"
+                        [config]="{type: 'host', hostName: host.name, hostIp: host.ip}"
                         queryParamsHandling="merge"
                         class="grid-link-value"
-                        [matTooltip]="test.host.name"
-                        >{{ test.host.name }}</a
+                        [matTooltip]="host.name"
+                        >{{ host.name }}</a
                       >
-                      <div class="host-ip-text">{{ test.host.ip }}</div>
+                      <div class="host-ip-text">{{ host.ip }}</div>
                     </div>
                   }
                 </div>
@@ -205,7 +208,12 @@ <h1 class="device-title" [matTooltip]="test.name">{{ test.name }}</h1>
             @if (activeTab() === 'log') {
               <div class="tab-content">
                 @defer {
-                  <app-test-log-tab [testId]="test.id"></app-test-log-tab>
+                  <app-test-log-tab
+                    [testId]="test.id"
+                    [jobId]="test.job?.id || data?.jobId || ''"
+                    [cloudLogLink]="test.executionDetails?.cloudLogLink || ''"
+                    [initialStatus]="test.status"
+                  ></app-test-log-tab>
                 } @placeholder {
                   <div class="tab-loading-placeholder">Loading logs...</div>
                 }
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/test_detail.spec.ts b/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/test_detail.spec.ts
index c3bee76f59..9c9259b32a 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/test_detail.spec.ts
+++ b/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/test_detail.spec.ts
@@ -118,7 +118,10 @@ describe('TestDetail Component', () => {
   });
 
   it('should fetch test details on init', () => {
-    expect(mockTestService.getTest).toHaveBeenCalledWith({testId: 'test_123'});
+    expect(mockTestService.getTest).toHaveBeenCalledWith({
+      testId: 'test_123',
+      jobId: '',
+    });
     const pageData = component.testPageData();
     expect(pageData).toBeTruthy();
     expect(pageData!.testOverviewData!.id).toBe('test_123');
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/test_detail.ts b/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/test_detail.ts
index d8b2585268..4905995273 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/test_detail.ts
+++ b/src/devtools/mobileharness/fe/v6/angular/app/features/test_detail/test_detail.ts
@@ -86,23 +86,28 @@ export class TestDetail {
           queryParams.get('sub_test_id') ||
           queryParams.get('sub_test') ||
           undefined,
+        jobId: params.get('jobId') || '',
       })),
       distinctUntilChanged(
-        (a, b) => a.testId === b.testId && a.subTestId === b.subTestId,
+        (a, b) =>
+          a.testId === b.testId &&
+          a.subTestId === b.subTestId &&
+          a.jobId === b.jobId,
       ),
       tap(() => {
         this.loadingService.show();
       }),
-      switchMap(({testId, subTestId}) => {
+      switchMap(({testId, subTestId, jobId}) => {
         if (!testId) {
           this.loadingService.hide();
           return of<TestPageData>({
             testOverviewData: null,
             error: 'No test ID provided in the route.',
+            jobId,
           });
         }
 
-        const request: GetTestRequest = {testId};
+        const request: GetTestRequest = {testId, jobId};
         if (subTestId) {
           request.subTestId = subTestId;
         }
@@ -110,7 +115,9 @@ export class TestDetail {
         const idForErrorLogging = subTestId || testId;
 
         return this.testService.getTest(request).pipe(
-          map((testOverviewData) => ({testOverviewData}) as TestPageData),
+          map(
+            (testOverviewData) => ({testOverviewData, jobId}) as TestPageData,
+          ),
           tap((data) => {
             if (data?.testOverviewData) {
               const test = data.testOverviewData;
@@ -126,6 +133,7 @@ export class TestDetail {
             return of<TestPageData>({
               testOverviewData: null,
               error: `Failed to load test data for ID: ${idForErrorLogging}. ${err.message || ''}`,
+              jobId,
             });
           }),
           finalize(() => {
diff --git a/src/devtools/mobileharness/fe/v6/angular/app/shared/components/accordion_item/accordion_item.scss b/src/devtools/mobileharness/fe/v6/angular/app/shared/components/accordion_item/accordion_item.scss
index 31b799913c..92ee87bf07 100644
--- a/src/devtools/mobileharness/fe/v6/angular/app/shared/components/accordion_item/accordion_item.scss
+++ b/src/devtools/mobileharness/fe/v6/angular/app/shared/components/accordion_item/accordion_item.scss
@@ -24,6 +24,7 @@
     min-width: 0;
     padding-right: 16px;
     word-break: break-word;
+    font-family: config.$labconsole-font;
   }
 
   .arrow-icon {
diff --git a/src/devtools/mobileharness/fe/v6/service/proto/test/BUILD b/src/devtools/mobileharness/fe/v6/service/proto/test/BUILD
index 5d1d81fc1d..2a3088c542 100644
--- a/src/devtools/mobileharness/fe/v6/service/proto/test/BUILD
+++ b/src/devtools/mobileharness/fe/v6/service/proto/test/BUILD
@@ -44,6 +44,7 @@ proto_library(
     srcs = ["test_service.proto"],
     deps = [
         ":test_resources_proto",
+        "@googleapis//google/api:annotations_proto",
     ],
 )
 
diff --git a/src/devtools/mobileharness/fe/v6/service/proto/test/test_service.proto b/src/devtools/mobileharness/fe/v6/service/proto/test/test_service.proto
index 7035b92657..e3ff9db9c2 100644
--- a/src/devtools/mobileharness/fe/v6/service/proto/test/test_service.proto
+++ b/src/devtools/mobileharness/fe/v6/service/proto/test/test_service.proto
@@ -18,6 +18,7 @@ syntax = "proto3";
 
 package devtools.mobileharness.fe.v6.service.proto.test;
 
+import "google/api/annotations.proto";
 import "src/devtools/mobileharness/fe/v6/service/proto/test/test_resources.proto";
 
 option java_package = "com.google.devtools.mobileharness.fe.v6.service.proto.test";
@@ -26,10 +27,20 @@ option java_outer_classname = "TestServiceProto";
 
 service TestService {
   // Gets the detailed information of a test by its ID.
-  rpc GetTest(GetTestRequest) returns (GetTestResponse) {}
+  rpc GetTest(GetTestRequest) returns (GetTestResponse) {
+    option (google.api.http) = {
+      post: "/v6/tests/{test_id}:getTest"
+      body: "*"
+    };
+  }
 
   // Gets the log chunk of a test by its ID, supporting pagination/offset.
-  rpc GetTestLog(GetTestLogRequest) returns (GetTestLogResponse) {}
+  rpc GetTestLog(GetTestLogRequest) returns (GetTestLogResponse) {
+    option (google.api.http) = {
+      post: "/v6/tests/{test_id}:getTestLog"
+      body: "*"
+    };
+  }
 }
 
 message GetTestRequest {
diff --git a/src/java/com/google/devtools/mobileharness/fe/v6/server/BUILD b/src/java/com/google/devtools/mobileharness/fe/v6/server/BUILD
index 523b50c765..57575f0ccf 100644
--- a/src/java/com/google/devtools/mobileharness/fe/v6/server/BUILD
+++ b/src/java/com/google/devtools/mobileharness/fe/v6/server/BUILD
@@ -44,6 +44,7 @@ java_library(
         "//src/java/com/google/devtools/mobileharness/fe/v6/service/host:host_service_grpc_impl",
         "//src/java/com/google/devtools/mobileharness/fe/v6/service/host:host_service_module",
         "//src/java/com/google/devtools/mobileharness/fe/v6/service/shared:oss_stubs",
+        "//src/java/com/google/devtools/mobileharness/fe/v6/service/test",
         "//src/java/com/google/devtools/mobileharness/fe/v6/shared/util/concurrent:oss_executor_module",
         "//src/java/com/google/devtools/mobileharness/shared/util/flags",
         "//src/java/com/google/devtools/mobileharness/shared/util/flags/core:flags_manager",
diff --git a/src/java/com/google/devtools/mobileharness/fe/v6/server/OssFeServer.java b/src/java/com/google/devtools/mobileharness/fe/v6/server/OssFeServer.java
index df3c86761f..0b144496da 100644
--- a/src/java/com/google/devtools/mobileharness/fe/v6/server/OssFeServer.java
+++ b/src/java/com/google/devtools/mobileharness/fe/v6/server/OssFeServer.java
@@ -28,6 +28,8 @@
 import com.google.devtools.mobileharness.fe.v6.service.host.HostServiceGrpcImpl;
 import com.google.devtools.mobileharness.fe.v6.service.host.HostServiceModule;
 import com.google.devtools.mobileharness.fe.v6.service.shared.OssStubsModule;
+import com.google.devtools.mobileharness.fe.v6.service.test.OssTestServiceModule;
+import com.google.devtools.mobileharness.fe.v6.service.test.TestServiceGrpcImpl;
 import com.google.devtools.mobileharness.fe.v6.shared.util.concurrent.OssExecutorModule;
 import com.google.devtools.mobileharness.shared.util.flags.Flags;
 import com.google.devtools.mobileharness.shared.util.flags.core.FlagsManager;
@@ -50,6 +52,7 @@ public final class OssFeServer {
   private final HostServiceGrpcImpl hostService;
   private final ConfigServiceGrpcImpl configService;
   private final AdminServiceGrpcImpl adminService;
+  private final TestServiceGrpcImpl testService;
   private volatile Server grpcServer;
 
   @Inject
@@ -58,11 +61,13 @@ public final class OssFeServer {
       HostServiceGrpcImpl hostService,
       ConfigServiceGrpcImpl configService,
       AdminServiceGrpcImpl adminService,
+      TestServiceGrpcImpl testService,
       @ServerPort int port) {
     this.deviceService = deviceService;
     this.hostService = hostService;
     this.configService = configService;
     this.adminService = adminService;
+    this.testService = testService;
     this.port = port;
   }
 
@@ -74,6 +79,7 @@ public void start() throws IOException {
             .addService(hostService)
             .addService(configService)
             .addService(adminService)
+            .addService(testService)
             .addService(ProtoReflectionService.newInstance())
             .build();
     grpcServer.start();
@@ -107,6 +113,7 @@ public static void main(String[] args) throws IOException, InterruptedException
             new HostServiceModule(),
             new ConfigServiceModule(),
             new AdminServiceModule(),
+            new OssTestServiceModule(),
             new OssStubsModule(),
             new AbstractModule() {
               @Override
diff --git a/src/java/com/google/devtools/mobileharness/fe/v6/service/test/BUILD b/src/java/com/google/devtools/mobileharness/fe/v6/service/test/BUILD
new file mode 100644
index 0000000000..dcec50f75e
--- /dev/null
+++ b/src/java/com/google/devtools/mobileharness/fe/v6/service/test/BUILD
@@ -0,0 +1,35 @@
+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+load("@rules_java//java:java_library.bzl", "java_library")
+
+package(
+    default_applicable_licenses = ["//:license"],
+    default_visibility = ["//src/devtools/mobileharness/fe/v6:visibility"],
+)
+
+java_library(
+    name = "test",
+    srcs = glob(["*.java"]),
+    deps = [
+        "//src/devtools/mobileharness/fe/v6/service/proto/test:test_service_java_grpc",
+        "//src/devtools/mobileharness/fe/v6/service/proto/test:test_service_java_proto",
+        "//src/java/com/google/devtools/common/metrics/stability/rpc/grpc:service_util",
+        "@grpc-java//stub",
+        "@maven//:com_google_guava_guava",
+        "@maven//:com_google_inject_guice",
+        "@maven//:javax_inject_jsr330_api",
+    ],
+)
diff --git a/src/java/com/google/devtools/mobileharness/fe/v6/service/test/NoOpTestServiceLogic.java b/src/java/com/google/devtools/mobileharness/fe/v6/service/test/NoOpTestServiceLogic.java
new file mode 100644
index 0000000000..f3badbff13
--- /dev/null
+++ b/src/java/com/google/devtools/mobileharness/fe/v6/service/test/NoOpTestServiceLogic.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2022 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.devtools.mobileharness.fe.v6.service.test;
+
+import static com.google.common.util.concurrent.Futures.immediateFailedFuture;
+
+import com.google.common.util.concurrent.ListenableFuture;
+import com.google.devtools.mobileharness.fe.v6.service.proto.test.GetTestLogRequest;
+import com.google.devtools.mobileharness.fe.v6.service.proto.test.GetTestLogResponse;
+import com.google.devtools.mobileharness.fe.v6.service.proto.test.GetTestRequest;
+import com.google.devtools.mobileharness.fe.v6.service.proto.test.GetTestResponse;
+
+/** No-op implementation of {@link TestServiceLogic} used when no MOSS backend is available. */
+public final class NoOpTestServiceLogic implements TestServiceLogic {
+
+  @Override
+  public ListenableFuture<GetTestResponse> getTest(GetTestRequest request) {
+    return immediateFailedFuture(
+        new UnsupportedOperationException("TestService.GetTest is not available."));
+  }
+
+  @Override
+  public ListenableFuture<GetTestLogResponse> getTestLog(GetTestLogRequest request) {
+    return immediateFailedFuture(
+        new UnsupportedOperationException("TestService.GetTestLog is not available."));
+  }
+}
diff --git a/src/java/com/google/devtools/mobileharness/fe/v6/service/test/OssTestServiceModule.java b/src/java/com/google/devtools/mobileharness/fe/v6/service/test/OssTestServiceModule.java
new file mode 100644
index 0000000000..27a76152de
--- /dev/null
+++ b/src/java/com/google/devtools/mobileharness/fe/v6/service/test/OssTestServiceModule.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2022 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.devtools.mobileharness.fe.v6.service.test;
+
+import com.google.inject.AbstractModule;
+
+/** OSS Guice module for TestService. Binds {@link TestServiceLogic} to the no-op impl. */
+public final class OssTestServiceModule extends AbstractModule {
+  @Override
+  protected void configure() {
+    bind(TestServiceLogic.class).to(NoOpTestServiceLogic.class);
+  }
+}
diff --git a/src/java/com/google/devtools/mobileharness/fe/v6/service/test/TestServiceGrpcImpl.java b/src/java/com/google/devtools/mobileharness/fe/v6/service/test/TestServiceGrpcImpl.java
new file mode 100644
index 0000000000..c439e0a224
--- /dev/null
+++ b/src/java/com/google/devtools/mobileharness/fe/v6/service/test/TestServiceGrpcImpl.java
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2022 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.devtools.mobileharness.fe.v6.service.test;
+
+import com.google.common.util.concurrent.ListeningExecutorService;
+import com.google.devtools.common.metrics.stability.rpc.grpc.GrpcServiceUtil;
+import com.google.devtools.mobileharness.fe.v6.service.proto.test.GetTestLogRequest;
+import com.google.devtools.mobileharness.fe.v6.service.proto.test.GetTestLogResponse;
+import com.google.devtools.mobileharness.fe.v6.service.proto.test.GetTestRequest;
+import com.google.devtools.mobileharness.fe.v6.service.proto.test.GetTestResponse;
+import com.google.devtools.mobileharness.fe.v6.service.proto.test.TestServiceGrpc;
+import io.grpc.stub.StreamObserver;
+import javax.inject.Inject;
+
+/** gRPC implementation of the TestService. */
+public final class TestServiceGrpcImpl extends TestServiceGrpc.TestServiceImplBase {
+
+  private final TestServiceLogic logic;
+  private final ListeningExecutorService executor;
+
+  @Inject
+  TestServiceGrpcImpl(TestServiceLogic logic, ListeningExecutorService executor) {
+    this.logic = logic;
+    this.executor = executor;
+  }
+
+  @Override
+  public void getTest(GetTestRequest request, StreamObserver<GetTestResponse> responseObserver) {
+    GrpcServiceUtil.invokeAsync(
+        request,
+        responseObserver,
+        logic::getTest,
+        executor,
+        TestServiceGrpc.getServiceDescriptor(),
+        TestServiceGrpc.getGetTestMethod());
+  }
+
+  @Override
+  public void getTestLog(
+      GetTestLogRequest request, StreamObserver<GetTestLogResponse> responseObserver) {
+    GrpcServiceUtil.invokeAsync(
+        request,
+        responseObserver,
+        logic::getTestLog,
+        executor,
+        TestServiceGrpc.getServiceDescriptor(),
+        TestServiceGrpc.getGetTestLogMethod());
+  }
+}
diff --git a/src/java/com/google/devtools/mobileharness/fe/v6/service/test/TestServiceLogic.java b/src/java/com/google/devtools/mobileharness/fe/v6/service/test/TestServiceLogic.java
new file mode 100644
index 0000000000..d70b0a636a
--- /dev/null
+++ b/src/java/com/google/devtools/mobileharness/fe/v6/service/test/TestServiceLogic.java
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2022 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.devtools.mobileharness.fe.v6.service.test;
+
+import com.google.common.util.concurrent.ListenableFuture;
+import com.google.devtools.mobileharness.fe.v6.service.proto.test.GetTestLogRequest;
+import com.google.devtools.mobileharness.fe.v6.service.proto.test.GetTestLogResponse;
+import com.google.devtools.mobileharness.fe.v6.service.proto.test.GetTestRequest;
+import com.google.devtools.mobileharness.fe.v6.service.proto.test.GetTestResponse;
+
+/** Logic interface for the Test Detail service. */
+public interface TestServiceLogic {
+
+  /** Gets the full test detail (overview, execution details, troubleshooting, sub-tests). */
+  ListenableFuture<GetTestResponse> getTest(GetTestRequest request);
+
+  /** Gets a paginated chunk of the test log. */
+  ListenableFuture<GetTestLogResponse> getTestLog(GetTestLogRequest request);
+}
diff --git a/src/javatests/com/google/devtools/mobileharness/fe/v6/server/BUILD b/src/javatests/com/google/devtools/mobileharness/fe/v6/server/BUILD
index 831671d7c7..b4fa304431 100644
--- a/src/javatests/com/google/devtools/mobileharness/fe/v6/server/BUILD
+++ b/src/javatests/com/google/devtools/mobileharness/fe/v6/server/BUILD
@@ -32,6 +32,7 @@ java_library(
         "//src/java/com/google/devtools/mobileharness/fe/v6/service/device:device_service_module",
         "//src/java/com/google/devtools/mobileharness/fe/v6/service/host:host_service_module",
         "//src/java/com/google/devtools/mobileharness/fe/v6/service/shared:oss_stubs",
+        "//src/java/com/google/devtools/mobileharness/fe/v6/service/test",
         "//src/java/com/google/devtools/mobileharness/fe/v6/shared/util/concurrent:oss_executor_module",
         "@maven//:com_google_inject_guice",
         "@maven//:junit_junit",
diff --git a/src/javatests/com/google/devtools/mobileharness/fe/v6/server/OssFeServerTest.java b/src/javatests/com/google/devtools/mobileharness/fe/v6/server/OssFeServerTest.java
index 5619b5911d..4f2968fbd6 100644
--- a/src/javatests/com/google/devtools/mobileharness/fe/v6/server/OssFeServerTest.java
+++ b/src/javatests/com/google/devtools/mobileharness/fe/v6/server/OssFeServerTest.java
@@ -22,6 +22,7 @@
 import com.google.devtools.mobileharness.fe.v6.service.device.DeviceServiceModule;
 import com.google.devtools.mobileharness.fe.v6.service.host.HostServiceModule;
 import com.google.devtools.mobileharness.fe.v6.service.shared.OssStubsModule;
+import com.google.devtools.mobileharness.fe.v6.service.test.OssTestServiceModule;
 import com.google.devtools.mobileharness.fe.v6.shared.util.concurrent.OssExecutorModule;
 import com.google.inject.AbstractModule;
 import com.google.inject.Guice;
@@ -43,6 +44,7 @@ public void startAndStop() throws Exception {
             new HostServiceModule(),
             new ConfigServiceModule(),
             new AdminServiceModule(),
+            new OssTestServiceModule(),
             new OssStubsModule(),
             new AbstractModule() {
               @Override