Add simple integration test

.travis.yml

@@ -19,9 +19,14 @@ jobs:
       script: ./tool/travis.sh dartanalyzer
       env: PKG="webdev"
       dart: dev
+    - stage: unit_test
+      script: ./tool/travis.sh test
+      env: PKG="webdev"
+      dart: dev
 
 stages:
   - analyzer_and_format
+  - unit_test
 
 # Only building master means that we don't run two builds for each pull request.
 branches:

tool/travis.sh

@@ -29,6 +29,11 @@ while (( "$#" )); do
     echo -e 'dartfmt -n --set-exit-if-changed .'
     dartfmt -n --set-exit-if-changed . || EXIT_CODE=$?
     ;;
+  test) echo
+    echo -e '\033[1mTASK: test\033[22m'
+    echo -e 'pub run test'
+    pub run test || EXIT_CODE=$?
+    ;;
   *) echo -e "\033[31mNot expecting TASK '${TASK}'. Error!\033[0m"
     EXIT_CODE=1
     ;;

webdev/.mono_repo.yml

@@ -6,5 +6,5 @@ stages:
   - analyzer_and_format:
     - dartfmt
     - dartanalyzer: --fatal-infos --fatal-warnings .
-#  - unit_test:
-#    - test
+  - unit_test:
+    - test

webdev/pubspec.yaml

@@ -12,5 +12,9 @@ dependencies:
   io: ^0.3.2+1
   stack_trace: ^1.9.2
 
+dev_dependencies:
+  test: ^0.12.0
+  test_process: ^1.0.1
+
 executables:
   webdev:

webdev/test/integration_test.dart

@@ -0,0 +1,39 @@
+// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:io';
+
+import 'package:test/test.dart';
+import 'package:test_process/test_process.dart';
+
+void main() {
+  test('README contains help output', () async {
+    var process = await TestProcess.start('dart', ['bin/webdev.dart']);
+
+    var output = (await process.stdoutStream().join('\n')).trim();
+
+    var readme = new File('README.md');
+
+    expect(readme.readAsStringSync(),
+        contains('```console\n\$ webdev\n$output\n```'));
+
+    await process.shouldExit(0);
+  });
+
+  test('non-existant commands create errors', () async {
+    var process =
+        await TestProcess.start('dart', ['bin/webdev.dart', 'monkey']);
+
+    var output = (await process.stdoutStream().join('\n')).trim();
+
+    expect(output, contains('Could not find a command named "monkey".'));
+
+    await process.shouldExit(64);
+  });
+
+  test('should fail in a package without a build_runner dependency', () async {
+    var process = await TestProcess.start('dart', ['bin/webdev.dart', 'serve']);
+    await process.shouldExit(255);
+  });
+}