Jest vs Bazel: Something is broken

language-support/ts/jest_vs_bazel/.gitignore

@@ -0,0 +1 @@
+node_modules

language-support/ts/jest_vs_bazel/BUILD.bazel

@@ -0,0 +1,13 @@
+# Copyright (c) 2020 Digital Asset (Switzerland) GmbH and/or its affiliates. All rights reserved.
+# SPDX-License-Identifier: Apache-2.0
+load("//language-support/ts:jest.bzl", "jest_test")
+
+jest_test(
+    name = "test",
+    srcs = ["index.test.js"],
+    jest_config = ":jest.config.js",
+    deps = [
+        "@language_support_ts_deps//jest-websocket-mock",
+        "@language_support_ts_deps//mock-socket",
+    ],
+)

language-support/ts/jest_vs_bazel/index.test.js

@@ -0,0 +1,9 @@
+// Copyright (c) 2020 Digital Asset (Switzerland) GmbH and/or its affiliates. All rights reserved.
+// SPDX-License-Identifier: Apache-2.0
+const WS = require("jest-websocket-mock").default;
+const Server = require("mock-socket").Server;
+
+test("jest-websocket-mock", () => {
+  const ws = new WS("ws://localhost:1234");
+  expect(ws.server).toBeInstanceOf(Server);
+});

language-support/ts/jest_vs_bazel/jest.config.js

@@ -0,0 +1,13 @@
+// Copyright (c) 2020 Digital Asset (Switzerland) GmbH and/or its affiliates. All rights reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+module.exports = {
+  testEnvironment: "node",
+  testMatch: [
+    "**/__tests__/**/*.+(ts|tsx|js)",
+    "**/?(*.)+(spec|test).+(ts|tsx|js)"
+  ],
+  transform: {
+    "^.+\\.(js|jsx)$": "babel-jest",
+  },
+}

language-support/ts/jest_vs_bazel/package.json

@@ -0,0 +1,14 @@
+{
+  "private": true,
+  "name": "jest_vs_bazel",
+  "version": "0.0.1",
+  "license": "Apache-2.0",
+  "scripts": {
+    "test": "jest"
+  },
+  "devDependencies": {
+    "jest": "^24.9.0",
+    "jest-websocket-mock": "^2.0.2",
+    "mock-socket": "^9.0.3"
+  }
+}

language-support/ts/jest_vs_bazel/tsconfig.json

@@ -0,0 +1,20 @@
+{
+  "compilerOptions": {
+    "target": "es5",
+    "lib": [
+      "es2015"
+     ],
+    "strict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "noImplicitReturns": true,
+    "noFallthroughCasesInSwitch": true,
+    "outDir": "lib/",
+    "module": "commonjs",
+    "esModuleInterop": true,
+    "declaration": true,
+    "sourceMap": true,
+    "allowJs": true
+  },
+  "include": ["index.test.js"]
+}

language-support/ts/packages/package.json

@@ -24,6 +24,8 @@
     "jest": "^24.9.0",
     "jest-cli": "^24.9.0",
     "jest-mock-console": "^1.0.0",
+    "jest-websocket-mock": "^2.0.2",
+    "mock-socket": "^9.0.3",
     "ts-jest": "^24.3.0",
     "typedoc": "^0.16.11"
   }