test(oxfmt/lsp): add nested workspace folders test (oxc-project#19507)

Added test coverage for a bug a possible
oxc-project/oxc-vscode#66
From the snapshots, I could not detect something wrong. Still worth to
include it

Author: Sysix

apps/oxfmt/test/lsp/format/__snapshots__/format.test.ts.snap

@@ -197,6 +197,62 @@ if (true) {
 --------------------"
 `;
 
+exports[`LSP formatting > config options in nested workspace folders > should respect nested oxfmt config with nested workspace folders nested-workspaces/test.ts 1`] = `
+"--- FILE -----------
+nested-workspaces/test.ts
+--- BEFORE ---------
+// { "semi": true, "singleQuote": true }
+const x = "1";
+
+--- AFTER ----------
+// { "semi": true, "singleQuote": true }
+const x = '1';
+
+--------------------"
+`;
+
+exports[`LSP formatting > config options in nested workspace folders > should respect nested oxfmt config with nested workspace folders nested-workspaces/test.ts 2`] = `
+"--- FILE -----------
+nested-workspaces/second/test.ts
+--- BEFORE ---------
+// { "semi": true, "singleQuote": true }
+const x = "1";
+
+--- AFTER ----------
+// { "semi": true, "singleQuote": true }
+const x = '1';
+
+--------------------"
+`;
+
+exports[`LSP formatting > config options in nested workspace folders > should respect nested oxfmt config with nested workspace folders nested-workspaces-with-config/test.ts 1`] = `
+"--- FILE -----------
+nested-workspaces-with-config/test.ts
+--- BEFORE ---------
+// { "semi": true, "singleQuote": true }
+const x = "1";
+
+--- AFTER ----------
+// { "semi": true, "singleQuote": true }
+const x = '1';
+
+--------------------"
+`;
+
+exports[`LSP formatting > config options in nested workspace folders > should respect nested oxfmt config with nested workspace folders nested-workspaces-with-config/test.ts 2`] = `
+"--- FILE -----------
+nested-workspaces-with-config/second/test.ts
+--- BEFORE ---------
+// { "semi": false, "singleQuote": false }
+const x = "1";
+
+--- AFTER ----------
+// { "semi": false, "singleQuote": false }
+const x = "1"
+
+--------------------"
+`;
+
 exports[`LSP formatting > ignore patterns > should handle ignore-config/file.generated.ts 1`] = `
 "--- FILE -----------
 ignore-config/file.generated.ts

apps/oxfmt/test/lsp/format/fixtures/nested-workspaces-with-config/.oxfmtrc.json

@@ -0,0 +1 @@
+{ "semi": true, "singleQuote": true }

apps/oxfmt/test/lsp/format/fixtures/nested-workspaces-with-config/second/.oxfmtrc.json

@@ -0,0 +1 @@
+{ "semi": false, "singleQuote": false }

apps/oxfmt/test/lsp/format/fixtures/nested-workspaces-with-config/second/test.ts

@@ -0,0 +1,2 @@
+// { "semi": false, "singleQuote": false }
+const x = "1";

apps/oxfmt/test/lsp/format/fixtures/nested-workspaces-with-config/test.ts

@@ -0,0 +1,2 @@
+// { "semi": true, "singleQuote": true }
+const x = "1";

apps/oxfmt/test/lsp/format/fixtures/nested-workspaces/.oxfmtrc.json

@@ -0,0 +1 @@
+{ "semi": true, "singleQuote": true }

apps/oxfmt/test/lsp/format/fixtures/nested-workspaces/second/test.ts

@@ -0,0 +1,2 @@
+// { "semi": true, "singleQuote": true }
+const x = "1";

apps/oxfmt/test/lsp/format/fixtures/nested-workspaces/test.ts

@@ -0,0 +1,2 @@
+// { "semi": true, "singleQuote": true }
+const x = "1";

apps/oxfmt/test/lsp/format/format.test.ts

@@ -1,6 +1,7 @@
-import { join } from "node:path";
+import { dirname, join } from "node:path";
 import { describe, expect, it } from "vitest";
-import { formatFixture, formatFixtureContent } from "../utils";
+import { createLspConnection, formatFixture, formatFixtureContent } from "../utils";
+import { pathToFileURL } from "node:url";
 
 const FIXTURES_DIR = join(import.meta.dirname, "fixtures");
 
@@ -33,6 +34,37 @@ describe("LSP formatting", () => {
     });
   });
 
+  describe("config options in nested workspace folders", () => {
+    it.each([
+      ["nested-workspaces/test.ts", "nested-workspaces/second/test.ts"],
+      ["nested-workspaces-with-config/test.ts", "nested-workspaces-with-config/second/test.ts"],
+    ])("should respect nested oxfmt config with nested workspace folders %s", async (...paths) => {
+      await using client = createLspConnection();
+      const dirUris = paths.map((path) => pathToFileURL(dirname(join(FIXTURES_DIR, path))).href);
+      await client.initialize(
+        [
+          { uri: dirUris[0], name: "test" },
+          { uri: dirUris[1], name: "test-2" },
+        ],
+        {},
+        [
+          {
+            workspaceUri: dirUris[0],
+            options: null,
+          },
+          {
+            workspaceUri: dirUris[1],
+            options: null,
+          },
+        ],
+      );
+      for (const path of paths) {
+        // oxlint-disable-next-line no-await-in-loop
+        expect(await formatFixture(FIXTURES_DIR, path, "typescript", client)).toMatchSnapshot();
+      }
+    });
+  });
+
   describe("unsaved document", () => {
     it.each([
       ["format/test.tsx", "typescriptreact"],

apps/oxfmt/test/lsp/utils.ts

@@ -106,42 +106,46 @@ export async function formatFixture(
   fixturesDir: string,
   fixturePath: string,
   languageId: string,
-  initializationOptions?: OxfmtLSPConfig,
+  clientOrConfig?: OxfmtLSPConfig | ReturnType<typeof createLspConnection>,
 ): Promise<string> {
   const filePath = join(fixturesDir, fixturePath);
   const fileUri = pathToFileURL(filePath).href;
 
-  return await formatFixtureContent(
-    fixturesDir,
-    fixturePath,
-    fileUri,
-    languageId,
-    initializationOptions,
-  );
+  return await formatFixtureContent(fixturesDir, fixturePath, fileUri, languageId, clientOrConfig);
 }
 
 export async function formatFixtureContent(
   fixturesDir: string,
   fixturePath: string,
   fileUri: string,
   languageId: string,
-  initializationOptions?: OxfmtLSPConfig,
+  clientOrConfig?: OxfmtLSPConfig | ReturnType<typeof createLspConnection>,
 ): Promise<string> {
   const filePath = join(fixturesDir, fixturePath);
   const dirPath = dirname(filePath);
   const content = await fs.readFile(filePath, "utf-8");
 
-  await using client = createLspConnection();
+  let innerClient: ReturnType<typeof createLspConnection> | undefined;
 
-  await client.initialize([{ uri: pathToFileURL(dirPath).href, name: "test" }], {}, [
-    {
-      workspaceUri: pathToFileURL(dirPath).href,
-      options: initializationOptions,
-    },
-  ]);
-  await client.didOpen(fileUri, languageId, content);
+  if (clientOrConfig === undefined || !("initialize" in clientOrConfig)) {
+    innerClient = createLspConnection();
+
+    await innerClient.initialize([{ uri: pathToFileURL(dirPath).href, name: "test" }], {}, [
+      {
+        workspaceUri: pathToFileURL(dirPath).href,
+        options: clientOrConfig,
+      },
+    ]);
+
+    clientOrConfig = innerClient;
+  }
+  await clientOrConfig.didOpen(fileUri, languageId, content);
+
+  const edits = await clientOrConfig.format(fileUri);
 
-  const edits = await client.format(fileUri);
+  if (innerClient) {
+    await innerClient[Symbol.asyncDispose]();
+  }
 
   return `
 --- FILE -----------