Adding Angular and dependent packages for testing

third_party/pkg/angular/test/tools/html_extractor_spec.dart

+library html_extractor_spec;
+
+import 'package:angular/tools/common.dart';
+import 'package:angular/tools/html_extractor.dart';
+import 'package:unittest/unittest.dart';
+
+import '../jasmine_syntax.dart';
+import 'mock_io_service.dart';
+
+main() => describe('html_extractor', () {
+
+  it('should extract text mustache expressions', () {
+    var ioService = new MockIoService({
+      'foo.html': r'''
+        <div>foo {{ctrl.bar}} baz {{aux}}</div>
+      '''
+    });
+
+    var extractor = new HtmlExpressionExtractor([], ioService);
+    extractor.crawl('/');
+    expect(extractor.expressions.toList()..sort(),
+        equals(['aux', 'ctrl.bar']));
+  });
+
+  it('should extract attribute mustache expressions', () {
+    var ioService = new MockIoService({
+      'foo.html': r'''
+        <div foo="foo-{{ctrl.bar}}" baz="{{aux}}-baz"></div>
+      '''
+    });
+
+    var extractor = new HtmlExpressionExtractor([], ioService);
+    extractor.crawl('/');
+    expect(extractor.expressions.toList()..sort(),
+        equals(['aux', 'ctrl.bar']));
+  });
+
+  it('should extract ng-repeat expressions', () {
+    var ioService = new MockIoService({
+      'foo.html': r'''
+        <div ng-repeat="foo in ctrl.bar"></div>
+      '''
+    });
+
+    var extractor = new HtmlExpressionExtractor([], ioService);
+    extractor.crawl('/');
+    expect(extractor.expressions.toList()..sort(),
+        equals(['ctrl.bar']));
+  });
+
+  it('should extract expressions provided in the directive info', () {
+    var ioService = new MockIoService({});
+
+    var extractor = new HtmlExpressionExtractor([
+      new DirectiveInfo('', [], ['foo', 'bar'])
+    ], ioService);
+    extractor.crawl('/');
+    expect(extractor.expressions.toList()..sort(),
+        equals(['bar', 'foo']));
+  });
+
+  it('should extract expressions from expression attributes', () {
+    var ioService = new MockIoService({
+      'foo.html': r'''
+        <foo bar="ctrl.baz"></foo>
+      '''
+    });
+
+    var extractor = new HtmlExpressionExtractor([
+      new DirectiveInfo('foo', ['bar'])
+    ], ioService);
+    extractor.crawl('/');
+    expect(extractor.expressions.toList()..sort(),
+        equals(['ctrl.baz']));
+  });
+
+  it('should ignore ng-repeat while extracting attribute expressions', () {
+    var ioService = new MockIoService({
+      'foo.html': r'''
+        <div ng-repeat="foo in ctrl.bar"></div>
+      '''
+    });
+
+    var extractor = new HtmlExpressionExtractor([
+      new DirectiveInfo('[ng-repeat]', ['ng-repeat'])
+    ], ioService);
+    extractor.crawl('/');
+    // Basically we don't want to extract "foo in ctrl.bar".
+    expect(extractor.expressions.toList()..sort(),
+        equals(['ctrl.bar']));
+  });
+});