Adding Angular and dependent packages for testing

third_party/pkg/angular/test/core_dom/node_cursor_spec.dart

Index: third_party/pkg/angular/test/core_dom/node_cursor_spec.dart
diff --git a/third_party/pkg/angular/test/core_dom/node_cursor_spec.dart b/third_party/pkg/angular/test/core_dom/node_cursor_spec.dart
new file mode 100644
index 0000000000000000000000000000000000000000..e150804293505b45f2c53d967e16a01ec60add4c
--- /dev/null
+++ b/third_party/pkg/angular/test/core_dom/node_cursor_spec.dart
@@ -0,0 +1,107 @@
+library node_cursor_spec;
+
+import '../_specs.dart';
+
+main() {
+  describe('NodeCursor', () {
+    var a, b, c, d;
+
+    beforeEach(() {
+      a = $('<a>A</a>')[0];
+      b = $('<b>B</b>')[0];
+      c = $('<i>C</i>')[0];
+      d = $('<span></span>')[0];
+      d.append(a);
+      d.append(b);
+    });
+
+
+    it('should allow single level traversal', () {
+      var cursor = new NodeCursor([a, b]);
+
+      expect(cursor.nodeList(), equals([a]));
+      expect(cursor.microNext(), equals(true));
+      expect(cursor.nodeList(), equals([b]));
+      expect(cursor.microNext(), equals(false));
+    });
+
+
+    it('should descend and ascend', () {
+      var cursor = new NodeCursor([d, c]);
+
+      expect(cursor.descend(), equals(true));
+      expect(cursor.nodeList(), equals([a]));
+      expect(cursor.microNext(), equals(true));
+      expect(cursor.nodeList(), equals([b]));
+      expect(cursor.microNext(), equals(false));
+      cursor.ascend();
+      expect(cursor.microNext(), equals(true));
+      expect(cursor.nodeList(), equals([c]));
+      expect(cursor.microNext(), equals(false));
+    });
+
+    it('should descend and ascend two levels', () {
+      var l1 = $('<span></span>')[0];
+      var l2 = $('<span></span>')[0];
+      var e = $('<e>E</e>')[0];
+      var f = $('<f>F</f>')[0];
+      l1.append(l2);
+      l1.append(f);
+      l2.append(e);
+      var cursor = new NodeCursor([l1, c]);
+
+      expect(cursor.descend(), equals(true));
+      expect(cursor.nodeList(), equals([l2]));
+      expect(cursor.descend(), equals(true));
+      expect(cursor.nodeList(), equals([e]));
+      cursor.ascend();
+      expect(cursor.microNext(), equals(true));
+      expect(cursor.nodeList(), equals([f]));
+      expect(cursor.microNext(), equals(false));
+      cursor.ascend();
+      expect(cursor.microNext(), equals(true));
+      expect(cursor.nodeList(), equals([c]));
+      expect(cursor.microNext(), equals(false));
+    });
+
+
+    it('should create child cursor upon replace of top level', () {
+      var parentCursor = new NodeCursor([a]);
+      var childCursor = parentCursor.replaceWithAnchor('child');
+
+      expect(parentCursor.elements.length, equals(1));
+      expect(STRINGIFY(parentCursor.elements[0]), equals('<!--ANCHOR: child-->'));
+      expect(childCursor.elements, equals([a]));
+
+      var leafCursor = childCursor.replaceWithAnchor('leaf');
+
+      expect(childCursor.elements.length, equals(1));
+      expect(STRINGIFY(childCursor.elements[0]), equals('<!--ANCHOR: leaf-->'));
+      expect(leafCursor.elements, equals([a]));
+    });
+
+
+    it('should create child cursor upon replace of mid level', () {
+      var dom = $('<div><span>text</span></div>');
+      var parentCursor = new NodeCursor(dom);
+      parentCursor.descend(); // <span>
+
+      var childCursor = parentCursor.replaceWithAnchor('child');
+      expect(STRINGIFY(dom), equals('[<div><!--ANCHOR: child--></div>]'));
+
+      expect(STRINGIFY(childCursor.elements[0]), equals('<span>text</span>'));
+    });
+
+    it('should preserve the top-level elements', () {
+      var dom = $('<span>text</span>MoreText<div>other</div>');
+      var parentCursor = new NodeCursor(dom);
+
+      var childCursor = parentCursor.replaceWithAnchor('child');
+      expect(STRINGIFY(dom), equals('[<!--ANCHOR: child-->, MoreText, <div>other</div>]'));
+
+      expect(STRINGIFY(childCursor.elements[0]), equals('<span>text</span>'));
+    });
+  });
+}
+
+