feat(cdk-experimental/ui-patterns): toolbar ui pattern tests (#31688)

Author: demanr

src/cdk-experimental/ui-patterns/toolbar/BUILD.bazel

@@ -1,4 +1,4 @@
-load("//tools:defaults.bzl", "ts_project")
+load("//tools:defaults.bzl", "ng_web_test_suite", "ts_project")
 
 package(default_visibility = ["//visibility:public"])
 
@@ -15,3 +15,20 @@ ts_project(
         "//src/cdk-experimental/ui-patterns/radio-group",
     ],
 )
+
+ts_project(
+    name = "unit_test_sources",
+    testonly = True,
+    srcs = glob(["**/*.spec.ts"]),
+    deps = [
+        ":toolbar",
+        "//:node_modules/@angular/core",
+        "//src/cdk/keycodes",
+        "//src/cdk/testing/private",
+    ],
+)
+
+ng_web_test_suite(
+    name = "unit_tests",
+    deps = [":unit_test_sources"],
+)