ArmPkg: Add Test/ArmPkgHostTest.dsc

Create a place for unittests in ArmPkg.

Jira TEGRAUEFI-2652

Change-Id: I7f7248f53dd1f7c1a22a4c681e491ec8701bd99c
Signed-off-by: Jake Garver <[email protected]>

Author: jgarver

ArmPkg/ArmPkg.ci.yaml

@@ -33,7 +33,7 @@
 
     ## options defined .pytool/Plugin/HostUnitTestCompilerPlugin
     "HostUnitTestCompilerPlugin": {
-        "DscPath": "" # Don't support this test
+        "DscPath": "Test/ArmPkgHostTest.dsc"
     },
 
     ## options defined .pytool/Plugin/CharEncodingCheck

ArmPkg/Test/ArmPkgHostTest.dsc

@@ -0,0 +1,24 @@
+## @file
+# ArmPkg DSC file used to build host-based unit tests.
+#
+# Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+  PLATFORM_NAME           = ArmPkgHostTest
+  PLATFORM_GUID           = e76b6095-4218-48e7-8d32-bdef9ac97e6d
+  PLATFORM_VERSION        = 0.1
+  DSC_SPECIFICATION       = 0x00010005
+  OUTPUT_DIRECTORY        = Build/ArmPkg/HostTest
+  SUPPORTED_ARCHITECTURES = IA32|X64
+  BUILD_TARGETS           = NOOPT
+  SKUID_IDENTIFIER        = DEFAULT
+
+# Commented until the first test is added.
+#!include UnitTestFrameworkPkg/UnitTestFrameworkPkgHost.dsc.inc
+
+[LibraryClasses]
+
+[Components]