test(builtin): add test for issue 1813

Issue bazel-contrib#1813 was fixed by bazel-contrib#1800 which is already landed. bazel-contrib#1805 also fixes via a different mechanism and will also land soon.

internal/linker/test/issue_1813/BUILD.bazel

@@ -0,0 +1,21 @@
+load("@npm//jest-cli:index.bzl", "jest_test")
+
+jest_test(
+    name = "test",
+    data = [
+        "index.test.js",
+        "jest.config.js",
+        "@npm//jest",
+        "@npm//jest-websocket-mock",
+        "@npm//mock-socket",
+    ],
+    templated_args = [
+        "--no-cache",
+        "--no-watchman",
+        "--ci",
+        # On Windows, spawing workers is broken
+        "--runInBand",
+        "--config",
+        "$$(rlocation $(rootpath jest.config.js))",
+    ],
+)

internal/linker/test/issue_1813/index.test.js

@@ -0,0 +1,15 @@
+// Loaded from common-js format
+// node_modules/jest-websocket-mock/lib/jest-websocket-mock.cjs.js
+const WS = require('jest-websocket-mock').default;
+// Loaded from js format
+// node_modules/mock-socket/dist/mock-socket.js"
+const Server = require('mock-socket').Server;
+
+// Fails without node-patches symlink guards fix in
+// https://github.com/bazelbuild/rules_nodejs/pull/1800
+// and node_modules execroot fix in
+// https://github.com/bazelbuild/rules_nodejs/pull/1805:
+test('jest-websocket-mock', () => {
+  const ws = new WS('ws://localhost:1234');
+  expect(ws.server).toBeInstanceOf(Server);
+});

internal/linker/test/issue_1813/jest.config.js

@@ -0,0 +1,4 @@
+module.exports = {
+  testEnvironment: 'node',
+  testMatch: ['**/*.test.js'],
+};

package.json

@@ -43,6 +43,8 @@
         "jasmine": "~3.4.0",
         "jasmine-core": "~3.4.0",
         "jasmine-reporters": "~2.3.2",
+        "jest": "~25.3.0",
+        "jest-websocket-mock": "~2.0.2",
         "karma": "~4.1.0",
         "karma-chrome-launcher": "2.2.0",
         "karma-firefox-launcher": "1.1.0",
@@ -51,6 +53,7 @@
         "karma-sourcemap-loader": "0.3.7",
         "lit-element": "^2.2.1",
         "minimist": "^1.2.2",
+        "mock-socket": "~9.0.3",
         "node_resolve_index": "file:./tools/npm_packages/node_resolve_index",
         "node_resolve_index_2": "file:./tools/npm_packages/node_resolve_index_2",
         "node_resolve_index_3": "file:./tools/npm_packages/node_resolve_index_3",
@@ -59,6 +62,7 @@
         "node_resolve_main_2": "file:./tools/npm_packages/node_resolve_main_2",
         "node_resolve_nested_main": "file:./tools/npm_packages/node_resolve_nested_main",
         "npm": "6.13.7",
+        "patch-package": "^6.2.2",
         "protobufjs": "6.8.8",
         "protractor": "^5.4.2",
         "requirejs": "2.3.6",
@@ -86,6 +90,10 @@
         "yarn": "1.22.0",
         "zone.js": "0.8.29"
     },
+    "// resolutions/**/jest-serializer": "need to resolve to a version that doesn't have a /// <reference path='../v8.d.ts' /> in build/index.d.ts which exposes a bug in ts_library",
+    "resolutions": {
+        "**/jest-serializer": "24.3.0"
+    },
     "scripts": {
         "test": "bazelisk test --test_tag_filters=-e2e,-examples,-manual,-browser:firefox-local",
         "test_windows": "bazelisk test --test_tag_filters=-e2e,-examples,-fix-windows,-manual,-browser:firefox-local",
@@ -115,7 +123,7 @@
         "format-all": "clang-format --glob='{internal/**/,examples/**/}*.{js,ts}' -i",
         "stardoc": "bazelisk build //docs && cp -f dist/bin/docs/*.md docs",
         "version": "conventional-changelog -p angular -i CHANGELOG.md -s && node ./scripts/on-version.js && bazel build //:release && node ./scripts/on-release.js && git stage version.bzl docs/install.md packages/create/index.js README.md CHANGELOG.md e2e/*/WORKSPACE examples/*/WORKSPACE",
-        "postinstall": "node internal/npm_install/test/postinstall.js"
+        "postinstall": "patch-package && node internal/npm_install/test/postinstall.js"
     },
     "husky": {
         "hooks": {

patches/jest-haste-map+25.3.0.patch

@@ -0,0 +1,16 @@
+diff --git a/node_modules/jest-haste-map/build/crawlers/node.js b/node_modules/jest-haste-map/build/crawlers/node.js
+index 349c3bd..08ba33b 100644
+--- a/node_modules/jest-haste-map/build/crawlers/node.js
++++ b/node_modules/jest-haste-map/build/crawlers/node.js
+@@ -205,7 +205,11 @@ function find(roots, extensions, ignore, callback) {
+
+ function findNative(roots, extensions, ignore, callback) {
+   const args = Array.from(roots);
++  args.push('(');
+   args.push('-type', 'f');
++  args.push('-o');
++  args.push('-type', 'l');
++  args.push(')');
+
+   if (extensions.length) {
+     args.push('(');