test: add test for bazel browser configuration

Adds a test for the Bazel browser configuration.

bazel/browsers/test/BUILD.bazel

@@ -0,0 +1,26 @@
+load("@build_bazel_rules_nodejs//:index.bzl", "js_library")
+load("@npm//@bazel/concatjs:index.bzl", "karma_web_test_suite")
+load("//bazel/spec-bundling:index.bzl", "spec_bundle")
+
+karma_web_test_suite(
+    name = "test",
+    browsers = [
+        "//bazel/browsers/chromium:chromium",
+        "//bazel/browsers/firefox:firefox",
+    ],
+    deps = [
+        ":test_bundle",
+    ],
+)
+
+js_library(
+    name = "test_lib",
+    srcs = ["browser-test.spec.mjs"],
+)
+
+spec_bundle(
+    name = "test_bundle",
+    platform = "browser",
+    workspace_name = "dev-infra",
+    deps = [":test_lib"],
+)

bazel/browsers/test/browser-test.spec.mjs

@@ -0,0 +1,13 @@
+/**
+ * @license
+ * Copyright Google LLC All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+describe('browser test', () => {
+  it('should work', () => {
+    expect(true).toBe(true);
+  });
+});

package.json

@@ -101,8 +101,15 @@
     "@types/yarnpkg__lockfile": "^1.1.5",
     "jsdoc": "^3.6.7",
     "jsdom": "^19.0.0",
+    "karma": "^6.3.15",
+    "karma-chrome-launcher": "^3.1.0",
+    "karma-firefox-launcher": "^2.1.2",
+    "karma-jasmine": "^4.0.1",
+    "karma-requirejs": "^1.1.0",
+    "karma-sourcemap-loader": "^0.3.8",
     "minimist": "^1.2.5",
     "protobufjs": "^6.11.2",
+    "requirejs": "^2.3.6",
     "rxjs": "^7.4.0",
     "uglify-js": "^3.14.2",
     "wait-on": "^6.0.0",