Adding Angular and dependent packages for testing

third_party/pkg/angular/test/filter/limit_to_spec.dart

Index: third_party/pkg/angular/test/filter/limit_to_spec.dart
diff --git a/third_party/pkg/angular/test/filter/limit_to_spec.dart b/third_party/pkg/angular/test/filter/limit_to_spec.dart
new file mode 100644
index 0000000000000000000000000000000000000000..9ce832fe76f1a21de4b4dd4593999939471fd178
--- /dev/null
+++ b/third_party/pkg/angular/test/filter/limit_to_spec.dart
@@ -0,0 +1,55 @@
+library limit_to_spec;
+
+import '../_specs.dart';
+
+main() {
+  describe('orderBy filter', () {
+    beforeEach(() => inject((Scope scope) {
+      scope['list'] = 'abcdefgh'.split('');
+      scope['string'] = 'tuvwxyz';
+    }));
+
+    it('should return the first X items when X is positive', inject((Scope scope) {
+      scope['limit'] = 3;
+      expect(scope.$eval('list | limitTo: 3')).toEqual(['a', 'b', 'c']);
+      expect(scope.$eval('list | limitTo: limit')).toEqual(['a', 'b', 'c']);
+      expect(scope.$eval('string | limitTo: 3')).toEqual('tuv');
+      expect(scope.$eval('string | limitTo: limit')).toEqual('tuv');
+    }));
+
+    it('should return the last X items when X is negative', inject((Scope scope) {
+      scope['limit'] = 3;
+      expect(scope.$eval('list | limitTo: -3')).toEqual(['f', 'g', 'h']);
+      expect(scope.$eval('list | limitTo: -limit')).toEqual(['f', 'g', 'h']);
+      expect(scope.$eval('string | limitTo: -3')).toEqual('xyz');
+      expect(scope.$eval('string | limitTo: -limit')).toEqual('xyz');
+    }));
+
+    it('should return an null when limiting null list',
+       inject((Scope scope) {
+      expect(scope.$eval('null | limitTo: 1')).toEqual(null);
+      expect(scope.$eval('thisIsNull | limitTo: 1')).toEqual(null);
+    }));
+
+    it('should return an empty array when X cannot be parsed',
+       inject((Scope scope) {
+      expect(scope.$eval('list | limitTo: bogus')).toEqual([]);
+      expect(scope.$eval('string | limitTo: null')).toEqual([]);
+      expect(scope.$eval('string | limitTo: thisIsNull')).toEqual([]);
+    }));
+
+    it('should return a copy of input array if X is exceeds array length',
+       inject((Scope scope) {
+      expect(scope.$eval('list | limitTo: 20')).toEqual(scope['list']);
+      expect(scope.$eval('list | limitTo: -20')).toEqual(scope['list']);
+      expect(scope.$eval('list | limitTo: 20')).not.toBe(scope['list']);
+    }));
+
+    it('should return the entire string if X exceeds input length',
+       inject((Scope scope) {
+      expect(scope.$eval('string | limitTo: 20')).toEqual(scope['string']);
+      expect(scope.$eval('string | limitTo: -20')).toEqual(scope['string']);
+    }));
+
+  });
+}