tests/html/documentfragment_test.dart - sdk.git - Git at Google

 // Copyright (c) 2011, 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.

 #library('DocumentFragmentTest');
 #import('../../pkg/unittest/unittest.dart');
 #import('../../pkg/unittest/html_config.dart');
 #import('dart:html');
 #source('util.dart');

 main() {
   useHtmlConfiguration();

   Collection<String> _nodeStrings(Collection<Node> input) {
     var out = new List<String>();
     for (Node n in input) {
       if (n is Element) {
         Element e = n;
         out.add(e.tagName);
       } else {
         out.add(n.text);
       }
     }
     return out;
   };

   assertConstError(void fn()) {
     try {
       fn();
     } catch (e) {
       if (e is IllegalAccessException || e is UnsupportedOperationException) {
         return;
       }
     }
     Expect.fail('Expected immutability error');
   };

   void expectEmptyStyleDeclaration(CSSStyleDeclaration style) {
     Expect.equals("", style.cssText);
     Expect.equals("", style.getPropertyPriority('color'));
     Expect.equals("", style.item(0));
     Expect.equals(0, style.length);
     // TODO(jacobr): these checks throw NotImplementedExceptions in dartium.
     // Expect.isNull(style.parentRule);
     // Expect.isNull(style.getPropertyCSSValue('color'));
     // Expect.isNull(style.getPropertyShorthand('color'));
     // Expect.isFalse(style.isPropertyImplicit('color'));

     // Ideally these would throw errors, but it's not possible to create a class
     // that'll intercept these calls without implementing the entire
     // CSSStyleDeclaration interface, so we'll settle for them being no-ops.
     style.cssText = '* {color: blue}';
     style.removeProperty('color');
     style.setProperty('color', 'blue');
   }

   group('constructors', () {
     test('0-argument makes an empty fragment', () {
       final fragment = new DocumentFragment();
       Expect.listEquals([], fragment.elements);
     });

     test('.html parses input as HTML', () {
       final fragment = new DocumentFragment.html('<a>foo</a>');
       Expect.isTrue(fragment.elements[0] is AnchorElement);
     });

     // test('.svg parses input as SVG', () {
     //   final fragment = new DocumentFragment.svg('<a>foo</a>');
     //   Expect.isTrue(fragment.elements[0] is SVGAElement);
     // });

     // TODO(nweiz): enable this once XML is ported.
     // test('.xml parses input as XML', () {
     //   final fragment = new DocumentFragment.xml('<a>foo</a>');
     //   Expect.isTrue(fragment.elements[0] is XMLElement);
     // });
   });

   test('Unsupported operations throw errors', () {
     var emptyFragment = new DocumentFragment();
     expectUnsupported(() => emptyFragment.attributes = {});
     expectUnsupported(() => emptyFragment.classes = []);
     expectUnsupported(() => emptyFragment.classes.add('foo'));
     expectUnsupported(() => emptyFragment.dataAttributes = {});
     expectUnsupported(() => emptyFragment.contentEditable = "true");
     expectUnsupported(() => emptyFragment.dir);
     expectUnsupported(() => emptyFragment.dir = "ltr");
     expectUnsupported(() => emptyFragment.draggable = true);
     expectUnsupported(() => emptyFragment.hidden = true);
     expectUnsupported(() => emptyFragment.id = "foo");
     expectUnsupported(() => emptyFragment.lang);
     expectUnsupported(() => emptyFragment.lang = "en");
     expectUnsupported(() => emptyFragment.scrollLeft = 10);
     expectUnsupported(() => emptyFragment.scrollTop = 10);
     expectUnsupported(() => emptyFragment.spellcheck = true);
     expectUnsupported(() => emptyFragment.translate = true);
     expectUnsupported(() => emptyFragment.tabIndex = 5);
     expectUnsupported(() => emptyFragment.title = "foo");
     expectUnsupported(() => emptyFragment.webkitdropzone = "foo");
     expectUnsupported(() => emptyFragment.webkitRegionOverflow = "foo");
   });

   group('elements', () {
     var fragment;
     var elements;

     init() {
       fragment = new DocumentFragment();
       elements = fragment.elements;
       fragment.nodes.addAll(
         [new Text("1"), new Element.tag("A"), new Element.tag("B"),
          new Text("2"), new Element.tag("I"), new Text("3"),
          new Element.tag("U")]);
     };

     test('is initially empty', () {
       elements = new DocumentFragment().elements;
       Expect.listEquals([], elements);
       Expect.isTrue(elements.isEmpty());
     });

     test('filters out non-element nodes', () {
       init();
       Expect.listEquals(["1", "A", "B", "2", "I", "3", "U"],
                         _nodeStrings(fragment.nodes));
       Expect.listEquals(["A", "B", "I", "U"], _nodeStrings(elements));
     });

     test('only indexes elements, not other nodes', () {
       init();
       elements[1] = new Element.tag("BR");
       Expect.listEquals(["1", "A", "BR", "2", "I", "3", "U"],
                         _nodeStrings(fragment.nodes));
       Expect.listEquals(["A", "BR", "I", "U"], _nodeStrings(elements));
     });

     test('adds to both elements and nodes', () {
       init();
       elements.add(new Element.tag("UL"));
       Expect.listEquals(["1", "A", "B", "2", "I", "3", "U", "UL"],
                         _nodeStrings(fragment.nodes));
       Expect.listEquals(["A", "B", "I", "U", "UL"], _nodeStrings(elements));
     });

     test('removes only elements, from both elements and nodes', () {
       init();
       Expect.equals("U", elements.removeLast().tagName);
       Expect.listEquals(["1", "A", "B", "2", "I", "3"],
                         _nodeStrings(fragment.nodes));
       Expect.listEquals(["A", "B", "I"], _nodeStrings(elements));

       Expect.equals("I", elements.removeLast().tagName);
       Expect.listEquals(["1", "A", "B", "2", "3"],
                         _nodeStrings(fragment.nodes));
       Expect.listEquals(["A", "B"], _nodeStrings(elements));
     });

     test('accessors are wrapped', () {
       init();
       Expect.equals("A", elements[0].tagName);
       Expect.listEquals(
           ["I"], _nodeStrings(elements.filter((e) => e.tagName == "I")));
       Expect.isTrue(elements.every((e) => e is Element));
       Expect.isTrue(elements.some((e) => e.tagName == "U"));
       Expect.isFalse(elements.isEmpty());
       Expect.equals(4, elements.length);
       Expect.equals("I", elements[2].tagName);
       Expect.equals("U", elements.last().tagName);
     });

     test('setting elements overwrites nodes as well', () {
       init();
       fragment.elements = [new Element.tag("DIV"), new Element.tag("HEAD")];
       Expect.listEquals(["DIV", "HEAD"], _nodeStrings(fragment.nodes));
     });
   });

   test('setting innerHTML works', () {
     var fragment = new DocumentFragment();
     fragment.nodes.add(new Text("foo"));
     fragment.innerHTML = "<a>bar</a>baz";
     Expect.listEquals(["A", "baz"], _nodeStrings(fragment.nodes));
   });

   test('getting innerHTML works', () {
     var fragment = new DocumentFragment();
     fragment.nodes.addAll([new Text("foo"), new Element.html("<A>bar</A>")]);
     Expect.equals("foo<a>bar</a>", fragment.innerHTML);
     Expect.equals("foo<a>bar</a>", fragment.outerHTML);
   });

   group('insertAdjacentElement', () {
     getFragment() => new DocumentFragment.html("<a>foo</a>");

     test('beforeBegin does nothing', () {
       var fragment = getFragment();
       Expect.isNull(
         fragment.insertAdjacentElement("beforeBegin", new Element.tag("b")));
       Expect.equals("<a>foo</a>", fragment.innerHTML);
     });

     test('afterEnd does nothing', () {
       var fragment = getFragment();
       Expect.isNull(
         fragment.insertAdjacentElement("afterEnd", new Element.tag("b")));
       Expect.equals("<a>foo</a>", fragment.innerHTML);
     });

     test('afterBegin inserts the element', () {
       var fragment = getFragment();
       var el = new Element.tag("b");
       Expect.equals(el, fragment.insertAdjacentElement("afterBegin", el));
       Expect.equals("<b></b><a>foo</a>", fragment.innerHTML);
     });

     test('beforeEnd inserts the element', () {
       var fragment = getFragment();
       var el = new Element.tag("b");
       Expect.equals(el, fragment.insertAdjacentElement("beforeEnd", el));
       Expect.equals("<a>foo</a><b></b>", fragment.innerHTML);
     });
   });

   group('insertAdjacentText', () {
     getFragment() => new DocumentFragment.html("<a>foo</a>");

     test('beforeBegin does nothing', () {
       var fragment = getFragment();
       fragment.insertAdjacentText("beforeBegin", "foo");
       Expect.equals("<a>foo</a>", fragment.innerHTML);
     });

     test('afterEnd does nothing', () {
       var fragment = getFragment();
       fragment.insertAdjacentText("afterEnd", "foo");
       Expect.equals("<a>foo</a>", fragment.innerHTML);
     });

     test('afterBegin inserts the text', () {
       var fragment = getFragment();
       fragment.insertAdjacentText("afterBegin", "foo");
       Expect.equals("foo<a>foo</a>", fragment.innerHTML);
     });

     test('beforeEnd inserts the text', () {
       var fragment = getFragment();
       fragment.insertAdjacentText("beforeEnd", "foo");
       Expect.equals("<a>foo</a>foo", fragment.innerHTML);
     });
   });

   group('insertAdjacentHTML', () {
     getFragment() => new DocumentFragment.html("<a>foo</a>");

     test('beforeBegin does nothing', () {
       var fragment = getFragment();
       fragment.insertAdjacentHTML("beforeBegin", "foo<br>");
       Expect.equals("<a>foo</a>", fragment.innerHTML);
     });

     test('afterEnd does nothing', () {
       var fragment = getFragment();
       fragment.insertAdjacentHTML("afterEnd", "<br>foo");
       Expect.equals("<a>foo</a>", fragment.innerHTML);
     });

     test('afterBegin inserts the HTML', () {
       var fragment = getFragment();
       fragment.insertAdjacentHTML("afterBegin", "foo<br>");
       Expect.equals("foo<br><a>foo</a>", fragment.innerHTML);
     });

     test('beforeEnd inserts the HTML', () {
       var fragment = getFragment();
       fragment.insertAdjacentHTML("beforeEnd", "<br>foo");
       Expect.equals("<a>foo</a><br>foo", fragment.innerHTML);
     });
   });

   // Just test that these methods don't throw errors
   test("no-op methods don't throw errors", () {
     var fragment = new DocumentFragment();
     fragment.on.click.add((e) => null);
     fragment.blur();
     fragment.focus();
     fragment.click();
     fragment.scrollByLines(2);
     fragment.scrollByPages(2);
     fragment.scrollIntoView();
     fragment.webkitRequestFullScreen(2);
   });

   test('default values', () {
     var fragment = new DocumentFragment();
     fragment.rect.then(expectAsync1((ElementRect rect) {
        expectEmptyRect(rect.client);
        expectEmptyRect(rect.offset);
        expectEmptyRect(rect.scroll);
        expectEmptyRect(rect.bounding);
        Expect.isTrue(rect.clientRects.isEmpty());
     }));
     Expect.equals("false", fragment.contentEditable);
     Expect.equals(-1, fragment.tabIndex);
     Expect.equals("", fragment.id);
     Expect.equals("", fragment.title);
     Expect.equals("", fragment.tagName);
     Expect.equals("", fragment.webkitdropzone);
     Expect.equals("", fragment.webkitRegionOverflow);
     Expect.isFalse(fragment.isContentEditable);
     Expect.isFalse(fragment.draggable);
     Expect.isFalse(fragment.hidden);
     Expect.isFalse(fragment.spellcheck);
     Expect.isFalse(fragment.translate);
     Expect.isNull(fragment.nextElementSibling);
     Expect.isNull(fragment.previousElementSibling);
     Expect.isNull(fragment.offsetParent);
     Expect.isNull(fragment.parent);
     Expect.isTrue(fragment.attributes.isEmpty());
     Expect.isTrue(fragment.classes.isEmpty());
     Expect.isTrue(fragment.dataAttributes.isEmpty());
     Expect.isFalse(fragment.matchesSelector("foo"));
     Expect.isFalse(fragment.matchesSelector("*"));
   });

   test('style', () {
     var fragment = new DocumentFragment();
     var style = fragment.style;
     expectEmptyStyleDeclaration(style);
     fragment.computedStyle.then(expectAsync1((computedStyle) {
       expectEmptyStyleDeclaration(computedStyle);
     }));
   });

   // TODO(nweiz): re-enable when const is better supported in dartc and/or frog
   // test('const fields are immutable', () {
   //   var fragment = new DocumentFragment();
   //   assertConstError(() => fragment.attributes['title'] = 'foo');
   //   assertConstError(() => fragment.dataAttributes['title'] = 'foo');
   //   fragment.rect.then((ElementRect rect) {
   //     assertConstError(() => rect.clientRects.add(null));
   //     callbackDone();
   //   });
   //   // Issue 174: #classes is currently not const
   //   // assertConstError(() => fragment.classes.add('foo'));
   // });

   test('query searches the fragment', () {
     var fragment = new DocumentFragment.html(
       "<div class='foo'><a>foo</a><b>bar</b></div>");
     Expect.equals("A", fragment.query(".foo a").tagName);
     Expect.listEquals(["A", "B"], _nodeStrings(fragment.queryAll(".foo *")));
   });
 }
	// Copyright (c) 2011, 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.

	#library('DocumentFragmentTest');
	#import('../../pkg/unittest/unittest.dart');
	#import('../../pkg/unittest/html_config.dart');
	#import('dart:html');
	#source('util.dart');

	main() {
	useHtmlConfiguration();

	Collection<String> _nodeStrings(Collection<Node> input) {
	var out = new List<String>();
	for (Node n in input) {
	if (n is Element) {
	Element e = n;
	out.add(e.tagName);
	} else {
	out.add(n.text);
	}
	}
	return out;
	};

	assertConstError(void fn()) {
	try {
	fn();
	} catch (e) {
	if (e is IllegalAccessException \|\| e is UnsupportedOperationException) {
	return;
	}
	}
	Expect.fail('Expected immutability error');
	};

	void expectEmptyStyleDeclaration(CSSStyleDeclaration style) {
	Expect.equals("", style.cssText);
	Expect.equals("", style.getPropertyPriority('color'));
	Expect.equals("", style.item(0));
	Expect.equals(0, style.length);
	// TODO(jacobr): these checks throw NotImplementedExceptions in dartium.
	// Expect.isNull(style.parentRule);
	// Expect.isNull(style.getPropertyCSSValue('color'));
	// Expect.isNull(style.getPropertyShorthand('color'));
	// Expect.isFalse(style.isPropertyImplicit('color'));

	// Ideally these would throw errors, but it's not possible to create a class
	// that'll intercept these calls without implementing the entire
	// CSSStyleDeclaration interface, so we'll settle for them being no-ops.
	style.cssText = '* {color: blue}';
	style.removeProperty('color');
	style.setProperty('color', 'blue');
	}

	group('constructors', () {
	test('0-argument makes an empty fragment', () {
	final fragment = new DocumentFragment();
	Expect.listEquals([], fragment.elements);
	});

	test('.html parses input as HTML', () {
	final fragment = new DocumentFragment.html('<a>foo</a>');
	Expect.isTrue(fragment.elements[0] is AnchorElement);
	});

	// test('.svg parses input as SVG', () {
	// final fragment = new DocumentFragment.svg('<a>foo</a>');
	// Expect.isTrue(fragment.elements[0] is SVGAElement);
	// });

	// TODO(nweiz): enable this once XML is ported.
	// test('.xml parses input as XML', () {
	// final fragment = new DocumentFragment.xml('<a>foo</a>');
	// Expect.isTrue(fragment.elements[0] is XMLElement);
	// });
	});

	test('Unsupported operations throw errors', () {
	var emptyFragment = new DocumentFragment();
	expectUnsupported(() => emptyFragment.attributes = {});
	expectUnsupported(() => emptyFragment.classes = []);
	expectUnsupported(() => emptyFragment.classes.add('foo'));
	expectUnsupported(() => emptyFragment.dataAttributes = {});
	expectUnsupported(() => emptyFragment.contentEditable = "true");
	expectUnsupported(() => emptyFragment.dir);
	expectUnsupported(() => emptyFragment.dir = "ltr");
	expectUnsupported(() => emptyFragment.draggable = true);
	expectUnsupported(() => emptyFragment.hidden = true);
	expectUnsupported(() => emptyFragment.id = "foo");
	expectUnsupported(() => emptyFragment.lang);
	expectUnsupported(() => emptyFragment.lang = "en");
	expectUnsupported(() => emptyFragment.scrollLeft = 10);
	expectUnsupported(() => emptyFragment.scrollTop = 10);
	expectUnsupported(() => emptyFragment.spellcheck = true);
	expectUnsupported(() => emptyFragment.translate = true);
	expectUnsupported(() => emptyFragment.tabIndex = 5);
	expectUnsupported(() => emptyFragment.title = "foo");
	expectUnsupported(() => emptyFragment.webkitdropzone = "foo");
	expectUnsupported(() => emptyFragment.webkitRegionOverflow = "foo");
	});

	group('elements', () {
	var fragment;
	var elements;

	init() {
	fragment = new DocumentFragment();
	elements = fragment.elements;
	fragment.nodes.addAll(
	[new Text("1"), new Element.tag("A"), new Element.tag("B"),
	new Text("2"), new Element.tag("I"), new Text("3"),
	new Element.tag("U")]);
	};

	test('is initially empty', () {
	elements = new DocumentFragment().elements;
	Expect.listEquals([], elements);
	Expect.isTrue(elements.isEmpty());
	});

	test('filters out non-element nodes', () {
	init();
	Expect.listEquals(["1", "A", "B", "2", "I", "3", "U"],
	_nodeStrings(fragment.nodes));
	Expect.listEquals(["A", "B", "I", "U"], _nodeStrings(elements));
	});

	test('only indexes elements, not other nodes', () {
	init();
	elements[1] = new Element.tag("BR");
	Expect.listEquals(["1", "A", "BR", "2", "I", "3", "U"],
	_nodeStrings(fragment.nodes));
	Expect.listEquals(["A", "BR", "I", "U"], _nodeStrings(elements));
	});

	test('adds to both elements and nodes', () {
	init();
	elements.add(new Element.tag("UL"));
	Expect.listEquals(["1", "A", "B", "2", "I", "3", "U", "UL"],
	_nodeStrings(fragment.nodes));
	Expect.listEquals(["A", "B", "I", "U", "UL"], _nodeStrings(elements));
	});

	test('removes only elements, from both elements and nodes', () {
	init();
	Expect.equals("U", elements.removeLast().tagName);
	Expect.listEquals(["1", "A", "B", "2", "I", "3"],
	_nodeStrings(fragment.nodes));
	Expect.listEquals(["A", "B", "I"], _nodeStrings(elements));

	Expect.equals("I", elements.removeLast().tagName);
	Expect.listEquals(["1", "A", "B", "2", "3"],
	_nodeStrings(fragment.nodes));
	Expect.listEquals(["A", "B"], _nodeStrings(elements));
	});

	test('accessors are wrapped', () {
	init();
	Expect.equals("A", elements[0].tagName);
	Expect.listEquals(
	["I"], _nodeStrings(elements.filter((e) => e.tagName == "I")));
	Expect.isTrue(elements.every((e) => e is Element));
	Expect.isTrue(elements.some((e) => e.tagName == "U"));
	Expect.isFalse(elements.isEmpty());
	Expect.equals(4, elements.length);
	Expect.equals("I", elements[2].tagName);
	Expect.equals("U", elements.last().tagName);
	});

	test('setting elements overwrites nodes as well', () {
	init();
	fragment.elements = [new Element.tag("DIV"), new Element.tag("HEAD")];
	Expect.listEquals(["DIV", "HEAD"], _nodeStrings(fragment.nodes));
	});
	});

	test('setting innerHTML works', () {
	var fragment = new DocumentFragment();
	fragment.nodes.add(new Text("foo"));
	fragment.innerHTML = "<a>bar</a>baz";
	Expect.listEquals(["A", "baz"], _nodeStrings(fragment.nodes));
	});

	test('getting innerHTML works', () {
	var fragment = new DocumentFragment();
	fragment.nodes.addAll([new Text("foo"), new Element.html("<A>bar</A>")]);
	Expect.equals("foo<a>bar</a>", fragment.innerHTML);
	Expect.equals("foo<a>bar</a>", fragment.outerHTML);
	});

	group('insertAdjacentElement', () {
	getFragment() => new DocumentFragment.html("<a>foo</a>");

	test('beforeBegin does nothing', () {
	var fragment = getFragment();
	Expect.isNull(
	fragment.insertAdjacentElement("beforeBegin", new Element.tag("b")));
	Expect.equals("<a>foo</a>", fragment.innerHTML);
	});

	test('afterEnd does nothing', () {
	var fragment = getFragment();
	Expect.isNull(
	fragment.insertAdjacentElement("afterEnd", new Element.tag("b")));
	Expect.equals("<a>foo</a>", fragment.innerHTML);
	});

	test('afterBegin inserts the element', () {
	var fragment = getFragment();
	var el = new Element.tag("b");
	Expect.equals(el, fragment.insertAdjacentElement("afterBegin", el));
	Expect.equals("<b></b><a>foo</a>", fragment.innerHTML);
	});

	test('beforeEnd inserts the element', () {
	var fragment = getFragment();
	var el = new Element.tag("b");
	Expect.equals(el, fragment.insertAdjacentElement("beforeEnd", el));
	Expect.equals("<a>foo</a><b></b>", fragment.innerHTML);
	});
	});

	group('insertAdjacentText', () {
	getFragment() => new DocumentFragment.html("<a>foo</a>");

	test('beforeBegin does nothing', () {
	var fragment = getFragment();
	fragment.insertAdjacentText("beforeBegin", "foo");
	Expect.equals("<a>foo</a>", fragment.innerHTML);
	});

	test('afterEnd does nothing', () {
	var fragment = getFragment();
	fragment.insertAdjacentText("afterEnd", "foo");
	Expect.equals("<a>foo</a>", fragment.innerHTML);
	});

	test('afterBegin inserts the text', () {
	var fragment = getFragment();
	fragment.insertAdjacentText("afterBegin", "foo");
	Expect.equals("foo<a>foo</a>", fragment.innerHTML);
	});

	test('beforeEnd inserts the text', () {
	var fragment = getFragment();
	fragment.insertAdjacentText("beforeEnd", "foo");
	Expect.equals("<a>foo</a>foo", fragment.innerHTML);
	});
	});

	group('insertAdjacentHTML', () {
	getFragment() => new DocumentFragment.html("<a>foo</a>");

	test('beforeBegin does nothing', () {
	var fragment = getFragment();
	fragment.insertAdjacentHTML("beforeBegin", "foo<br>");
	Expect.equals("<a>foo</a>", fragment.innerHTML);
	});

	test('afterEnd does nothing', () {
	var fragment = getFragment();
	fragment.insertAdjacentHTML("afterEnd", "<br>foo");
	Expect.equals("<a>foo</a>", fragment.innerHTML);
	});

	test('afterBegin inserts the HTML', () {
	var fragment = getFragment();
	fragment.insertAdjacentHTML("afterBegin", "foo<br>");
	Expect.equals("foo<br><a>foo</a>", fragment.innerHTML);
	});

	test('beforeEnd inserts the HTML', () {
	var fragment = getFragment();
	fragment.insertAdjacentHTML("beforeEnd", "<br>foo");
	Expect.equals("<a>foo</a><br>foo", fragment.innerHTML);
	});
	});

	// Just test that these methods don't throw errors
	test("no-op methods don't throw errors", () {
	var fragment = new DocumentFragment();
	fragment.on.click.add((e) => null);
	fragment.blur();
	fragment.focus();
	fragment.click();
	fragment.scrollByLines(2);
	fragment.scrollByPages(2);
	fragment.scrollIntoView();
	fragment.webkitRequestFullScreen(2);
	});

	test('default values', () {
	var fragment = new DocumentFragment();
	fragment.rect.then(expectAsync1((ElementRect rect) {
	expectEmptyRect(rect.client);
	expectEmptyRect(rect.offset);
	expectEmptyRect(rect.scroll);
	expectEmptyRect(rect.bounding);
	Expect.isTrue(rect.clientRects.isEmpty());
	}));
	Expect.equals("false", fragment.contentEditable);
	Expect.equals(-1, fragment.tabIndex);
	Expect.equals("", fragment.id);
	Expect.equals("", fragment.title);
	Expect.equals("", fragment.tagName);
	Expect.equals("", fragment.webkitdropzone);
	Expect.equals("", fragment.webkitRegionOverflow);
	Expect.isFalse(fragment.isContentEditable);
	Expect.isFalse(fragment.draggable);
	Expect.isFalse(fragment.hidden);
	Expect.isFalse(fragment.spellcheck);
	Expect.isFalse(fragment.translate);
	Expect.isNull(fragment.nextElementSibling);
	Expect.isNull(fragment.previousElementSibling);
	Expect.isNull(fragment.offsetParent);
	Expect.isNull(fragment.parent);
	Expect.isTrue(fragment.attributes.isEmpty());
	Expect.isTrue(fragment.classes.isEmpty());
	Expect.isTrue(fragment.dataAttributes.isEmpty());
	Expect.isFalse(fragment.matchesSelector("foo"));
	Expect.isFalse(fragment.matchesSelector("*"));
	});

	test('style', () {
	var fragment = new DocumentFragment();
	var style = fragment.style;
	expectEmptyStyleDeclaration(style);
	fragment.computedStyle.then(expectAsync1((computedStyle) {
	expectEmptyStyleDeclaration(computedStyle);
	}));
	});

	// TODO(nweiz): re-enable when const is better supported in dartc and/or frog
	// test('const fields are immutable', () {
	// var fragment = new DocumentFragment();
	// assertConstError(() => fragment.attributes['title'] = 'foo');
	// assertConstError(() => fragment.dataAttributes['title'] = 'foo');
	// fragment.rect.then((ElementRect rect) {
	// assertConstError(() => rect.clientRects.add(null));
	// callbackDone();
	// });
	// // Issue 174: #classes is currently not const
	// // assertConstError(() => fragment.classes.add('foo'));
	// });

	test('query searches the fragment', () {
	var fragment = new DocumentFragment.html(
	"<div class='foo'><a>foo</a><b>bar</b></div>");
	Expect.equals("A", fragment.query(".foo a").tagName);
	Expect.listEquals(["A", "B"], _nodeStrings(fragment.queryAll(".foo *")));
	});
	}