Revert "ci: remove material-unit-tests failure blocklist (#32138)" (#32226)

This reverts commit 0660903784 so we
can add some tests to the blocklist.

PR Close #32226

.github/CODEOWNERS

@@ -911,6 +911,14 @@ testing/**                                                      @angular/fw-test
 
 
 
+# ================================================
+#  Material CI
+# ================================================
+
+/tools/material-ci/**                                           @angular/fw-core @angular/framework-global-approvers
+
+
+
 # ================================================
 #  Public API
 # ================================================

scripts/ci/run_angular_material_unit_tests.sh

@@ -21,6 +21,10 @@ cd ${MATERIAL_REPO_TMP_DIR}
 # Note that it's not necessary to perform a yarn install, as Bazel performs its own yarn install.
 node ${angular_dir}/scripts/ci/update-deps-to-dist-packages.js ${MATERIAL_REPO_TMP_DIR}/package.json ${angular_dir}/dist/packages-dist-ivy-aot/
 
+# Append the test blocklist into angular/material2's karma-test-shim.js.
+# This filters out known-failing tests because the goal is to prevent regressions.
+cat ${angular_dir}/tools/material-ci/angular_material_test_blocklist.js >> ./test/karma-test-shim.js
+
 # Create a symlink for the Bazel binary installed through NPM, as running through Yarn introduces OOM errors.
 ./scripts/circleci/setup_bazel_binary.sh
 

tools/material-ci/angular_material_test_blocklist.js

@@ -0,0 +1,20 @@
+/**
+ * @license
+ * Copyright Google Inc. 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
+ */
+
+/**
+ * Blocklist of unit tests from angular/material2 with ivy that are skipped when running on
+ * angular/angular. As bugs are resolved, items should be removed from this blocklist.
+ *
+ * The `notes` section should be used to keep track of specific issues associated with the failures.
+ */
+
+// clang-format off
+// tslint:disable
+
+window.testBlocklist = {};
+// clang-format on

tools/material-ci/instructions.md

@@ -0,0 +1,24 @@
+### Unit tests for Angular CDK/Material
+The unit tests from angular/material2 run on CircleCI under the `material-unit-tests` job.
+Known failing tests are skipped based on the blocklist in
+`tools/material-ci/angular_material_test_blocklist.js`. Whenever the root cause of a known failure
+is identified, the `notes` field for the corresponding tests should be updated. Whenever a failure
+is resolved, the corresponding tests should be removed from the blocklist.
+
+### Debugging
+To debug a failure, you need to work against the angular/material2 repo:
+1. Clone `angular/material2`
+2. Checkout the `ivy-2019` branch
+3. Run `yarn`
+4. Run `scripts/ivy/install-angular.sh path/to/local/angular/repo`
+5. Run `gulp test`
+
+### Regenerating the blocklist
+If a problem has been fixed, you can regenerate the blocklist by:
+1. Clone `angular/material2`
+2. Checkout the `ivy-2019` branch
+3. Run `yarn`
+4. Run `scripts/ivy/install-angular.sh path/to/local/angular/repo`
+5. Run `gulp test`. Let it finish. It will take a few minutes.
+6. Run `scripts/ivy/generate-blocklist.js path/to/local/angular/repo`
+7. Copy the new blocklist from `dist/angular_material_test_blocklist.js`