test: move builder testing infrastructure to separate bazel target module

The builder testing infrastructure and harness has been moved out of the
`@angular-devkit/build-angular` package and into a separate bazel only
module.  This allows the testing code to be shared with other packages
within the repository. It also removes test only code from within
the package that is not specific any of the included builders.

Author: clydin

.eslintrc.json

@@ -15,6 +15,7 @@
     "bazel-out",
     "dist-schema",
     "goldens/public-api",
+    "modules/testing/builder/projects",
     "packages/angular_devkit/build_angular/src/babel-bazel.d.ts",
     "packages/angular_devkit/build_angular/test",
     "packages/angular_devkit/build_webpack/test",

.github/workflows/ci.yml

@@ -103,7 +103,9 @@ jobs:
         uses: angular/dev-infra/github-actions/bazel/configure-remote@f8b2efa171f4ebec4d0cb3d5c5d4f7cb680f2af9
       - name: Install node modules
         run: yarn install --frozen-lockfile
-      - name: Run tests
+      - name: Run module tests
+        run: yarn bazel test //modules/...
+      - name: Run package tests
         run: yarn bazel test //packages/...
 
   e2e:

.prettierignore

@@ -2,6 +2,7 @@
 /docs/design/analytics.md
 /dist-schema/
 /goldens/public-api
+/modules/testing/builder/projects/
 /packages/angular_devkit/build_angular/test/
 /packages/angular_devkit/core/src/workspace/json/test/
 /packages/angular_devkit/schematics_cli/blank/project-files/

modules/testing/builder/BUILD.bazel

@@ -0,0 +1,45 @@
+load("@npm//@bazel/jasmine:index.bzl", "jasmine_node_test")
+load("//tools:defaults.bzl", "ts_library")
+
+package(default_visibility = ["//visibility:public"])
+
+ts_library(
+    name = "builder",
+    testonly = True,
+    srcs = glob(
+        include = [
+            "src/**/*.ts",
+        ],
+        exclude = [
+            "src/**/*_spec.ts",
+        ],
+    ),
+    data = glob(["projects/**/*"]),
+    deps = [
+        "//packages/angular_devkit/architect",
+        "//packages/angular_devkit/architect/node",
+        "//packages/angular_devkit/architect/testing",
+        "//packages/angular_devkit/core",
+        "//packages/angular_devkit/core/node",
+        "@npm//rxjs",
+    ],
+)
+
+ts_library(
+    name = "unit_test_lib",
+    testonly = True,
+    srcs = glob(
+        include = [
+            "src/**/*_spec.ts",
+        ],
+    ),
+    deps = [
+        ":builder",
+        "//packages/angular_devkit/architect/testing",
+    ],
+)
+
+jasmine_node_test(
+    name = "unit_test",
+    srcs = [":unit_test_lib"],
+)