build: run angular/material2 unit tests on ci (#28197)

PR Close #28197

scripts/ci/run_angular_material_unit_tests.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+set -u -e -o pipefail
+
+
+# This script runs unit tests from angular/material2.
+
+# Save the dir for the root of the Angular repo.
+angular_dir=$(pwd)
+
+# Clone the angular/material2 repo into tmp so we can run the tests from there.
+# We specifically use /tmp here because we want the cloned repo to be completely
+# isolated from angular/angular in order to avoid any bad interactions between their
+# separate build setups. Also note that this is using the ivy-2019 branch, which has
+# previously been set up to work with ivy.
+cd /tmp
+rm -rf /tmp/material2
+git clone --depth 1 --branch ivy-2019 https://github.com/angular/material2.git
+
+# Install dependencies for the freshly cloned repo.
+cd /tmp/material2
+yarn install --frozen-lockfile --non-interactive # TODO: cache
+
+# Install this version of Angular into the freshly cloned repo.
+rm -rf /tmp/material2/node_modules/@angular/*
+cp -r ${angular_dir}/dist/packages-dist-ivy-aot/* /tmp/material2/node_modules/@angular/
+
+# The angular/material2 CI sets TEST_PLATFORM to either local, saucelabs, or browserstack.
+# For angular/angular, we only want to run the local tests.
+export TEST_PLATFORM=local
+
+# Append the test blacklist 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_blacklist.js >> /tmp/material2/test/karma-test-shim.js
+
+# Now actually run the tests.
+yarn gulp test:single-run