feat(examples): illustrate how to run a mocha test (#1216)

examples/BUILD.bazel

@@ -97,7 +97,6 @@ example_integration_test(
 example_integration_test(
     name = "examples_webapp",
     npm_packages = {
-        "//packages/jasmine:npm_package": "@bazel/jasmine",
         "//packages/protractor:npm_package": "@bazel/protractor",
         "//packages/rollup:npm_package": "@bazel/rollup",
         "//packages/terser:npm_package": "@bazel/terser",

examples/webapp/BUILD.bazel

@@ -1,5 +1,5 @@
 load("@npm//http-server:index.bzl", "http_server")
-load("@npm_bazel_jasmine//:index.bzl", "jasmine_node_test")
+load("@npm//mocha:index.bzl", "mocha_test")
 load("@npm_bazel_protractor//:index.bzl", "protractor_web_test_suite")
 load(":differential_loading.bzl", "differential_loading")
 
@@ -31,14 +31,27 @@ protractor_web_test_suite(
     ],
 )
 
-jasmine_node_test(
+mocha_test(
     name = "test_sourcemaps",
-    srcs = ["sourcemaps.spec.js"],
-    deps = [
+    # if we were in a subdirectory we'd need
+    # package_name() + "/*.spec.js"
+    args = ["*.spec.js"],
+    data = [
+        "sourcemaps.spec.js",
         ":app_chunks",
         ":app_chunks.min",
         ":app_chunks_es5",
         ":app_chunks_es5.min",
         "@npm//source-map",
     ],
+    tags = [
+        # Need to set the pwd to avoid mocha needing a runfiles helper
+        "no-bazelci-windows",
+    ],
+)
+
+# Just a dummy test so that we have a test target for //... on certain bazelci platforms with bazel_integration_test
+sh_test(
+    name = "dummy_test",
+    srcs = ["dummy_test.sh"],
 )

examples/webapp/package.json

@@ -4,12 +4,12 @@
         "@babel/cli": "^7.6.0",
         "@babel/core": "^7.6.0",
         "@babel/preset-env": "^7.6.0",
-        "@bazel/jasmine": "^0.38.0",
         "@bazel/protractor": "^0.38.0",
         "@bazel/rollup": "^0.38.0",
         "@bazel/terser": "^0.38.0",
         "@bazel/typescript": "^0.38.0",
         "http-server": "^0.11.1",
+        "mocha": "^6.2.1",
         "rollup": "1.21.4",
         "source-map": "^0.7.3",
         "terser": "^4.3.1",

examples/webapp/sourcemaps.spec.js

@@ -1,5 +1,6 @@
 // Ensure we have working sourcemaps when the app runs in a browser
 
+const assert = require('assert');
 const fs = require('fs');
 const path = require('path');
 const sm = require('source-map');
@@ -38,9 +39,9 @@ function asserts(pos) {
   // so it actually starts with a bunch of '/../..'
   // expect(pos.source).toBe('index.mjs');
 
-  expect(pos.source.endsWith('index.mjs')).toBeTruthy();
-  expect(pos.line).toBe(7);     // one-based
-  expect(pos.column).toBe(20);  // zero-based
+  assert(pos.source.endsWith('index.mjs'));
+  assert(pos.line == 7);     // one-based
+  assert(pos.column == 20);  // zero-based
 }
 
 describe('application sourcemaps in the browser', () => {