Add supported checks to the SVG library, and library cleanup.

tests/html/svg_3_test.dart

-library SVG3Test;
-import '../../pkg/unittest/lib/unittest.dart';
-import '../../pkg/unittest/lib/html_config.dart';
-import 'dart:html';
-import 'dart:svg' as svg;
-
-// Test that SVG elements have the operations advertised through all the IDL
-// interfaces.  This is a 'duck typing' test, and does not explicitly use 'is'
-// checks on the expected interfaces (that is in SVGTest2).
-
-main() {
-
-  var isString = predicate((x) => x is String, 'is a String');
-  var isStringList = predicate((x) => x is List<String>, 'is a List<String>');
-  var isSvgMatrix = predicate((x) => x is svg.Matrix, 'is a svg.Matrix');
-  var isSvgAnimatedBoolean =
-      predicate((x) => x is svg.AnimatedBoolean, 'is an svg.AnimatedBoolean');
-  var isSvgAnimatedString =
-      predicate((x) => x is svg.AnimatedString, 'is an svg.AnimatedString');
-  var isSvgRect = predicate((x) => x is svg.Rect, 'is a svg.Rect');
-  var isSvgAnimatedTransformList =
-      predicate((x) => x is svg.AnimatedTransformList,
-          'is an svg.AnimatedTransformList');
-  var isCssStyleDeclaration =
-      predicate((x) => x is CssStyleDeclaration, 'is a CssStyleDeclaration');
-  var isCssValue = predicate((x) => x is CssValue, 'is a CssValue');
-
-  insertTestDiv() {
-    var element = new Element.tag('div');
-    element.innerHtml = r'''
-<svg id='svg1' width='200' height='100'>
-<rect id='rect1' x='10' y='20' width='130' height='40' rx='5'fill='blue'></rect>
-</svg>
-''';
-    document.body.nodes.add(element);
-    return element;
-  }
-
-  useHtmlConfiguration();
-
-  /**
-   * Verifies that [e] supports the operations on the svg.Tests interface.
-   */
-  checkSvgTests(e) {
-    // Just check that the operations seem to exist.
-    var rx = e.requiredExtensions;
-    expect(rx, isStringList);
-    var rf = e.requiredFeatures;
-    expect(rf, isStringList);
-    var sl = e.systemLanguage;
-    expect(sl, isStringList);
-
-    bool hasDoDo = e.hasExtension("DoDo");
-    expect(hasDoDo, isFalse);
-  }
-
-  /**
-   * Verifies that [e] supports the operations on the svg.LangSpace interface.
-   */
-  checkSvgLangSpace(e) {
-    // Just check that the attribtes seem to exist.
-    var lang = e.xmllang;
-    e.xmllang = lang;
-
-    String space = e.xmlspace;
-    e.xmlspace = space;
-
-    expect(lang, isString);
-    expect(space, isString);
-  }
-
-  /**
-   * Verifies that [e] supports the operations on the
-   * svg.ExternalResourcesRequired interface.
-   */
-  checkSvgExternalResourcesRequired(e) {
-    var b = e.externalResourcesRequired;
-    expect(b, isSvgAnimatedBoolean);
-    expect(b.baseVal, isFalse);
-    expect(b.animVal, isFalse);
-  }
-
-  /**
-   * Verifies that [e] supports the operations on the svg.Locatable interface.
-   */
-  checkSvgLocatable(e) {
-    var v1 = e.farthestViewportElement;
-    var v2 = e.nearestViewportElement;
-    expect(v1, same(v2));
-
-    var bbox = e.getBBox();
-    expect(bbox, isSvgRect);
-
-    var ctm = e.getCtm();
-    expect(ctm, isSvgMatrix);
-
-    var sctm = e.getScreenCtm();
-    expect(sctm, isSvgMatrix);
-
-    var xf2e = e.getTransformToElement(e);
-    expect(xf2e, isSvgMatrix);
-  }
-
-  /**
-   * Verifies that [e] supports the operations on the svg.Transformable
-   * interface.
-   */
-  checkSvgTransformable(e) {
-    var trans = e.transform;
-    expect(trans, isSvgAnimatedTransformList);
-  }
-
-  testRect(name, checker) {
-    test(name, () {
-        var div = insertTestDiv();
-        var r = document.query('#rect1');
-        checker(r);
-        div.remove();
-      });
-  }
-
-  testRect('rect_SvgTests', checkSvgTests);
-  testRect('rect_SvgLangSpace', checkSvgLangSpace);
-  testRect('rect_SvgExternalResourcesRequired',
-           checkSvgExternalResourcesRequired);
-  testRect('rect_SvgLocatable', checkSvgLocatable);
-  testRect('rect_SvgTransformable', checkSvgTransformable);
-
-}