bazel: wct tests.

Change-Id: I297312db715a0b8ca9b540ed4470e54a6b645592

polygerrit-ui/README.md

@@ -111,6 +111,14 @@ For interactively working on a single test file, do the following:
 
 Then visit http://localhost:8081/elements/foo/bar_test.html
 
+## Running tests (bazel)
+
+Run
+
+```sh
+WCT_ARGS='--some-flag' sh polygerrit-ui/app/run_test.sh
+```
+
 ## Style guide
 
 We follow the [Google JavaScript Style Guide](https://google.github.io/styleguide/javascriptguide.xml)

polygerrit-ui/app/BUILD

@@ -2,17 +2,10 @@ package(
   default_visibility = ["//visibility:public"])
 
 load('//tools/bzl:genrule2.bzl', 'genrule2')
-load("//tools/bzl:js.bzl", "bower_component_bundle", "vulcanize")
-
-bower_component_bundle(
-  name = 'test_components',
-  deps = [
-    '//polygerrit-ui:polygerrit_components',
-    '//lib/js:iron-test-helpers',
-    '//lib/js:test-fixture',
-    '//lib/js:web-component-tester',
-  ],
-)
+load(
+  "//tools/bzl:js.bzl",
+  "bower_component_bundle", "vulcanize",
+  "bower_component", "js_component")
 
 vulcanize(
   name = "gr-app",
@@ -30,10 +23,10 @@ vulcanize(
 
 filegroup(
   name = "top_sources",
-  srcs = glob([
+  srcs = [
     'favicon.ico',
     'index.html',
-  ]),
+  ],
 )
 
 filegroup(
@@ -67,3 +60,46 @@ genrule2(
   ],
   outs = [ "polygerrit_ui.zip" ],
 )
+
+bower_component_bundle(
+  name = 'test_components',
+  deps = [
+    '//polygerrit-ui:polygerrit_components',
+    '//lib/js:iron-test-helpers',
+    '//lib/js:test-fixture',
+    '//lib/js:web-component-tester',
+  ],
+)
+
+filegroup(
+  name = "pg_code",
+  srcs = glob([
+    '**/*.html',
+    '**/*.js',
+  ], exclude = [
+    'bower_components/**',
+  ])
+)
+
+genrule2(
+  name = "pg_code_zip",
+  outs = [ "pg_code.zip", ],
+  srcs = [ ":pg_code" ],
+  cmd = " && ".join([
+    ("tar -cf- --mtime=1980-01-01\\ 00:00 $(locations :pg_code) |"
+     + " tar --strip-components=2 -C $$TMP/ -xf-"),
+    "cd $$TMP",
+    "zip -rq $$ROOT/$@ *"])
+)
+
+sh_test(
+  name = "wct_test",
+  srcs = [ "wct_test.sh" ],
+  data = [
+    ":pg_code.zip",
+    ":test_components.zip",
+    "test/index.html",
+  ],
+  # Should not run sandboxed.
+  tags = ["local"],
+)

polygerrit-ui/app/run_test.sh

@@ -0,0 +1,24 @@
+#!/bin/sh
+
+wct_bin=$(which wct)
+if [[ -z "$wct_bin" ]]; then
+    echo "WCT must be on the path."
+    exit 1
+fi
+
+npm_bin=$(which npm)
+if [[ -z "$npm_bin" ]]; then
+    echo "NPM must be on the path."
+    exit 1
+fi
+
+# WCT tests are not hermetic, and need extra environment variables.
+# TODO(hanwen): does $DISPLAY even work on OSX?
+bazel test \
+      --test_env="HOME=$HOME" \
+      --test_env="WCT=${wct_bin}" \
+      --test_env="WCT_ARGS=${WCT_ARGS}" \
+      --test_env="NPM=${npm_bin}" \
+      --test_env="DISPLAY=${DISPLAY}" \
+      "$@" \
+      //polygerrit-ui/app:wct_test

polygerrit-ui/app/wct_test.sh

@@ -0,0 +1,56 @@
+#!/bin/sh
+
+set -ex
+
+t=$(mktemp -d || mktemp -d -t wct-XXXXXXXXXX)
+components=$TEST_SRCDIR/gerrit/polygerrit-ui/app/test_components.zip
+code=$TEST_SRCDIR/gerrit/polygerrit-ui/app/pg_code.zip
+
+echo $t
+unzip -qd $t $components
+unzip -qd $t $code
+mkdir -p $t/test
+cp $TEST_SRCDIR/gerrit/polygerrit-ui/app/test/index.html $t/test/
+
+# For some reason wct tries to install selenium into its node_modules
+# directory on first run. If you've installed into /usr/local and
+# aren't running wct as root, you're screwed. Turning this option off
+# through skipSeleniumInstall seems to still work, so there's that.
+
+# Sauce tests are disabled by default in order to run local tests
+# only.  Run it with (saucelabs.com account required; free for open
+# source): WCT_ARGS='--plugin sauce' buck test --no-results-cache
+# --include web
+
+cat <<EOF > $t/wct.conf.js
+module.exports = {
+      'suites': ['test'],
+      'webserver': {
+        'pathMappings': [
+          {'/components/bower_components': 'bower_components'}
+        ]
+      },
+      'plugins': {
+        'local': {
+          'skipSeleniumInstall': true
+        },
+        'sauce': {
+          'disabled': true,
+          'browsers': [
+            'OS X 10.11/chrome',
+            'Windows 10/chrome',
+            'Linux/firefox',
+            'OS X 10.11/safari',
+            'Windows 10/microsoftedge'
+          ]
+        }
+      }
+    };
+EOF
+
+export PATH="$(dirname $WCT):$(dirname $NPM):$PATH"
+
+cd $t
+test -n "${WCT}"
+
+$(basename ${WCT}) ${WCT_ARGS}