build: run moment adapter tests with bazel (#14687)

src/material-moment-adapter/BUILD.bazel

@@ -1,6 +1,6 @@
 package(default_visibility=["//visibility:public"])
 
-load("//tools:defaults.bzl", "ng_module", "ng_package")
+load("//tools:defaults.bzl", "ng_module", "ng_package", "ng_web_test_suite", "ng_test_library")
 load("//:packages.bzl", "ROLLUP_GLOBALS")
 
 ng_module(
@@ -11,7 +11,6 @@ ng_module(
     "@angular//packages/core",
     "@matdeps//moment",
     "//src/lib/core",
-    "//src/lib/testing",
   ],
   # Explicitly specify the tsconfig that is also used by Gulp. We need to explicitly use this
   # tsconfig because in order to import Moment with TypeScript, we need some special options
@@ -19,6 +18,30 @@ ng_module(
   tsconfig = ":tsconfig-build.json",
 )
 
+ng_test_library(
+  name = "moment_adapter_test_sources",
+  srcs = glob(["**/*.spec.ts"]),
+  deps = [
+    "//src/lib/core",
+    "//src/lib/testing",
+    "@matdeps//moment",
+    ":material-moment-adapter",
+  ],
+)
+
+ng_web_test_suite(
+  name = "unit_tests",
+  deps = [
+    ":require-config.js",
+    ":moment_adapter_test_sources"
+  ],
+  # We need to load Moment statically since it is not a named AMD module and needs to
+  # be manually configured through "require.js" which is used by "ts_web_test_suite".
+  static_files = [
+    "@matdeps//moment",
+  ],
+)
+
 ng_package(
   name = "npm_package",
   srcs = ["package.json"],

src/material-moment-adapter/require-config.js

@@ -0,0 +1,7 @@
+// Require.js is being used by the karma bazel rules and needs to be configured to properly
+// load AMD modules which are not explicitly named in their output bundle.
+require.config({
+  paths: {
+    'moment': '/base/matdeps/node_modules/moment/min/moment-with-locales.min'
+  }
+});