build: set up harness integration test for vitest

Now that Vitest is the default test runner in the CLI, we need test coverage for harnesses. These changes set up an integration test that brings in the common harness tests and executes them inside a CLI app using Vitest.

Author: crisbeto

integration/vitest/BUILD.bazel

@@ -0,0 +1,13 @@
+load("//tools:integration.bzl", "LOCAL_NPM_PACKAGES", "integration_test")
+
+integration_test(
+    name = "test",
+    srcs = ["//src/cdk/testing/tests:sources_for_integration_tests"] + glob(["**/*"]),
+    commands = [
+        "pnpm install",
+        "node ./setup-test-files.mjs",
+        "pnpm run test --watch=false",
+    ],
+    npm_packages = LOCAL_NPM_PACKAGES,
+    tags = ["requires-network"],
+)

integration/vitest/angular.json

@@ -0,0 +1,56 @@
+{
+  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
+  "version": 1,
+  "cli": {
+    "packageManager": "npm"
+  },
+  "newProjectRoot": "projects",
+  "projects": {
+    "vitest": {
+      "projectType": "application",
+      "schematics": {},
+      "root": "",
+      "sourceRoot": "src",
+      "prefix": "app",
+      "architect": {
+        "build": {
+          "builder": "@angular/build:application",
+          "options": {
+            "browser": "src/main.ts",
+            "tsConfig": "tsconfig.app.json",
+            "assets": [],
+            "polyfills": ["zone.js"],
+            "styles": []
+          },
+          "configurations": {
+            "production": {
+              "budgets": [],
+              "outputHashing": "all"
+            },
+            "development": {
+              "optimization": false,
+              "extractLicenses": false,
+              "sourceMap": true
+            }
+          },
+          "defaultConfiguration": "production"
+        },
+        "serve": {
+          "builder": "@angular/build:dev-server",
+          "configurations": {
+            "production": {
+              "buildTarget": "vitest:build:production"
+            },
+            "development": {
+              "buildTarget": "vitest:build:development"
+            }
+          },
+          "defaultConfiguration": "development"
+        },
+        "test": {
+          "builder": "@angular/build:unit-test"
+        }
+      }
+    }
+  }
+}

integration/vitest/package.json

@@ -0,0 +1,34 @@
+{
+  "name": "vitest",
+  "version": "0.0.0",
+  "scripts": {
+    "ng": "ng",
+    "start": "ng serve",
+    "build": "ng build",
+    "watch": "ng build --watch --configuration development",
+    "test": "ng test"
+  },
+  "private": true,
+  "dependencies": {
+    "@angular/cdk": "next",
+    "@angular/common": "^21.0.0",
+    "@angular/compiler": "^21.0.0",
+    "@angular/core": "^21.0.0",
+    "@angular/forms": "^21.0.0",
+    "@angular/material": "next",
+    "@angular/platform-browser": "^21.0.0",
+    "@angular/router": "^21.0.0",
+    "glob": "latest",
+    "rxjs": "~7.8.0",
+    "tslib": "^2.3.0",
+    "zone.js": "^0.16.0"
+  },
+  "devDependencies": {
+    "@angular/build": "^21.0.3",
+    "@angular/cli": "^21.0.3",
+    "@angular/compiler-cli": "^21.0.0",
+    "jsdom": "^27.1.0",
+    "typescript": "~5.9.2",
+    "vitest": "^4.0.8"
+  }
+}