The Tor Browser: dom/smil/test/smilTestUtils.js@6474c204b198 (annotated)

dom/smil/test/smilTestUtils.js@6474c204b198 (annotated)

dom/smil/test/smilTestUtils.js

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* vim: set ts=2 sw=2 sts=2 et: */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 // Note: Class syntax roughly based on:
 // https://developer.mozilla.org/en/Core_JavaScript_1.5_Guide/Inheritance
 const SVG_NS = "http://www.w3.org/2000/svg";
 const XLINK_NS = "http://www.w3.org/1999/xlink";
 const MPATH_TARGET_ID = "smilTestUtilsTestingPath";
 function extend(child, supertype)
 {
    child.prototype.__proto__ = supertype.prototype;
 }
 // General Utility Methods
 var SMILUtil =
 {
   // Returns the first matched <svg> node in the document
   getSVGRoot : function()
   {
     return SMILUtil.getFirstElemWithTag("svg");
   },
   // Returns the first element in the document with the matching tag
   getFirstElemWithTag : function(aTargetTag)
   {
     var elemList = document.getElementsByTagName(aTargetTag);
     return (elemList.length == 0 ? null : elemList[0]);
   },
   // Simple wrapper for getComputedStyle
   getComputedStyleSimple: function(elem, prop)
   {
     return window.getComputedStyle(elem, null).getPropertyValue(prop);
   },
   getAttributeValue: function(elem, attr)
   {
     if (attr.attrName == SMILUtil.getMotionFakeAttributeName()) {
       // Fake motion "attribute" -- "computed value" is the element's CTM
       return elem.getCTM();
     }
     if (attr.attrType == "CSS") {
       return SMILUtil.getComputedStyleWrapper(elem, attr.attrName);
     }
     if (attr.attrType == "XML") {
       // XXXdholbert This is appropriate for mapped attributes, but not
       // for other attributes.
       return SMILUtil.getComputedStyleWrapper(elem, attr.attrName);
     }
   },
   // Smart wrapper for getComputedStyle, which will generate a "fake" computed
   // style for recognized shorthand properties (font, overflow, marker)
   getComputedStyleWrapper : function(elem, propName)
   {
     // Special cases for shorthand properties (which aren't directly queriable
     // via getComputedStyle)
     var computedStyle;
     if (propName == "font") {
       var subProps = ["font-style", "font-variant", "font-weight",
                       "font-size", "line-height", "font-family"];
       for (var i in subProps) {
         var subPropStyle = SMILUtil.getComputedStyleSimple(elem, subProps[i]);
         if (subPropStyle) {
           if (subProps[i] == "line-height") {
             // There needs to be a "/" before line-height
             subPropStyle = "/ " + subPropStyle;
           }
           if (!computedStyle) {
             computedStyle = subPropStyle;
           } else {
             computedStyle = computedStyle + " " + subPropStyle;
           }
         }
       }
     } else if (propName == "marker") {
       var subProps = ["marker-end", "marker-mid", "marker-start"];
       for (var i in subProps) {
         if (!computedStyle) {
           computedStyle = SMILUtil.getComputedStyleSimple(elem, subProps[i]);
         } else {
           is(computedStyle, SMILUtil.getComputedStyleSimple(elem, subProps[i]),
              "marker sub-properties should match each other " +
              "(they shouldn't be individually set)");
         }
       }
     } else if (propName == "overflow") {
       var subProps = ["overflow-x", "overflow-y"];
       for (var i in subProps) {
         if (!computedStyle) {
           computedStyle = SMILUtil.getComputedStyleSimple(elem, subProps[i]);
         } else {
           is(computedStyle, SMILUtil.getComputedStyleSimple(elem, subProps[i]),
              "overflow sub-properties should match each other " +
              "(they shouldn't be individually set)");
         }
       }
     } else {
       computedStyle = SMILUtil.getComputedStyleSimple(elem, propName);
     }
     return computedStyle;
   },
   // This method hides (i.e. sets "display: none" on) all of the given node's
   // descendents.  It also hides the node itself, if requested.
   hideSubtree : function(node, hideNodeItself, useXMLAttribute)
   {
     // Hide node, if requested
     if (hideNodeItself) {
       if (useXMLAttribute) {
         if (node.setAttribute) {
           node.setAttribute("display", "none");
         }
       } else if (node.style) {
         node.style.display = "none";
       }
     }
     // Hide node's descendents
     var child = node.firstChild;
     while (child) {
       SMILUtil.hideSubtree(child, true, useXMLAttribute);
       child = child.nextSibling;
     }
   },
   getMotionFakeAttributeName : function() {
     return "_motion";
   },
 };
 var CTMUtil =
 {
   CTM_COMPONENTS_ALL    : ["a", "b", "c", "d", "e", "f"],
   CTM_COMPONENTS_ROTATE : ["a", "b", "c", "d" ],
   // Function to generate a CTM Matrix from a "summary"
   // (a 3-tuple containing [tX, tY, theta])
   generateCTM : function(aCtmSummary)
   {
     if (!aCtmSummary || aCtmSummary.length != 3) {
       ok(false, "Unexpected CTM summary tuple length: " + aCtmSummary.length);
     }
     var tX = aCtmSummary[0];
     var tY = aCtmSummary[1];
     var theta = aCtmSummary[2];
     var cosTheta = Math.cos(theta);
     var sinTheta = Math.sin(theta);
     var newCtm = { a : cosTheta,  c: -sinTheta,  e: tX,
                    b : sinTheta,  d:  cosTheta,  f: tY  };
     return newCtm;
   },
   /// Helper for isCtmEqual
   isWithinDelta : function(aTestVal, aExpectedVal, aErrMsg, aIsTodo) {
     var testFunc = aIsTodo ? todo : ok;
     const delta = 0.00001; // allowing margin of error = 10^-5
     ok(aTestVal >= aExpectedVal - delta &&
        aTestVal <= aExpectedVal + delta,
        aErrMsg + " | got: " + aTestVal + ", expected: " + aExpectedVal);
   },
   assertCTMEqual : function(aLeftCtm, aRightCtm, aComponentsToCheck,
                             aErrMsg, aIsTodo) {
     var foundCTMDifference = false;
     for (var j in aComponentsToCheck) {
       var curComponent = aComponentsToCheck[j];
       if (!aIsTodo) {
         CTMUtil.isWithinDelta(aLeftCtm[curComponent], aRightCtm[curComponent],
                               aErrMsg + " | component: " + curComponent, false);
       } else if (aLeftCtm[curComponent] != aRightCtm[curComponent]) {
         foundCTMDifference = true;
       }
     }
     if (aIsTodo) {
       todo(!foundCTMDifference, aErrMsg + " | (currently marked todo)");
     }
   },
   assertCTMNotEqual : function(aLeftCtm, aRightCtm, aComponentsToCheck,
                                aErrMsg, aIsTodo) {
     // CTM should not match initial one
     var foundCTMDifference = false;
     for (var j in aComponentsToCheck) {
       var curComponent = aComponentsToCheck[j];
       if (aLeftCtm[curComponent] != aRightCtm[curComponent]) {
         foundCTMDifference = true;
         break; // We found a difference, as expected. Success!
       }
     }
     if (aIsTodo) {
       todo(foundCTMDifference, aErrMsg + " | (currently marked todo)");
     } else {
       ok(foundCTMDifference, aErrMsg);
     }
   },
 };
 // Wrapper for timing information
 function SMILTimingData(aBegin, aDur)
 {
   this._begin = aBegin;
   this._dur = aDur;
 }
 SMILTimingData.prototype =
 {
   _begin: null,
   _dur: null,
   getBeginTime      : function() { return this._begin; },
   getDur            : function() { return this._dur; },
   getEndTime        : function() { return this._begin + this._dur; },
   getFractionalTime : function(aPortion)
   {
     return this._begin + aPortion * this._dur;
   },
 }
 /**
  * Attribute: a container for information about an attribute we'll
  * attempt to animate with SMIL in our tests.
  *
  * See also the factory methods below: NonAnimatableAttribute(),
  * NonAdditiveAttribute(), and AdditiveAttribute().
  *
  * @param aAttrName The name of the attribute
  * @param aAttrType The type of the attribute ("CSS" vs "XML")
  * @param aTargetTag The name of an element that this attribute could be
  *                   applied to.
  * @param aIsAnimatable A bool indicating whether this attribute is defined as
  *                      animatable in the SVG spec.
  * @param aIsAdditive   A bool indicating whether this attribute is defined as
  *                      additive (i.e. supports "by" animation) in the SVG spec.
  */
 function Attribute(aAttrName, aAttrType, aTargetTag,
                    aIsAnimatable, aIsAdditive)
 {
   this.attrName = aAttrName;
   this.attrType = aAttrType;
   this.targetTag = aTargetTag;
   this.isAnimatable = aIsAnimatable;
   this.isAdditive = aIsAdditive;
 }
 Attribute.prototype =
 {
   // Member variables
   attrName     : null,
   attrType     : null,
   isAnimatable : null,
   testcaseList : null,
 };
 // Generators for Attribute objects.  These allow lists of attribute
 // definitions to be more human-readible than if we were using Attribute() with
 // boolean flags, e.g. "Attribute(..., true, true), Attribute(..., true, false)
 function NonAnimatableAttribute(aAttrName, aAttrType, aTargetTag)
 {
   return new Attribute(aAttrName, aAttrType, aTargetTag, false, false);
 }
 function NonAdditiveAttribute(aAttrName, aAttrType, aTargetTag)
 {
   return new Attribute(aAttrName, aAttrType, aTargetTag, true, false);
 }
 function AdditiveAttribute(aAttrName, aAttrType, aTargetTag)
 {
   return new Attribute(aAttrName, aAttrType, aTargetTag, true, true);
 }
 /**
  * TestcaseBundle: a container for a group of tests for a particular attribute
  *
  * @param aAttribute An Attribute object for the attribute
  * @param aTestcaseList An array of AnimTestcase objects
  */
 function TestcaseBundle(aAttribute, aTestcaseList, aSkipReason)
 {
   this.animatedAttribute = aAttribute;
   this.testcaseList = aTestcaseList;
   this.skipReason = aSkipReason;
 }
 TestcaseBundle.prototype =
 {
   // Member variables
   animatedAttribute : null,
   testcaseList      : null,
   skipReason        : null,
   // Methods
   go : function(aTimingData) {
     if (this.skipReason) {
       todo(false, "Skipping a bundle for '" + this.animatedAttribute.attrName +
            "' because: " + this.skipReason);
     } else {
       // Sanity Check: Bundle should have > 0 testcases
       if (!this.testcaseList || !this.testcaseList.length) {
         ok(false, "a bundle for '" + this.animatedAttribute.attrName +
            "' has no testcases");
       }
       var targetElem =
         SMILUtil.getFirstElemWithTag(this.animatedAttribute.targetTag);
       if (!targetElem) {
         ok(false, "Error: can't find an element of type '" +
            this.animatedAttribute.targetTag +
            "', so I can't test property '" +
            this.animatedAttribute.attrName + "'");
         return;
       }
       for (var testcaseIdx in this.testcaseList) {
         var testcase = this.testcaseList[testcaseIdx];
         if (testcase.skipReason) {
           todo(false, "Skipping a testcase for '" +
                this.animatedAttribute.attrName +
                "' because: " + testcase.skipReason);
         } else {
           testcase.runTest(targetElem, this.animatedAttribute,
                            aTimingData, false);
           testcase.runTest(targetElem, this.animatedAttribute,
                            aTimingData, true);
         }
       }
     }
   },
 };
 /**
  * AnimTestcase: an abstract class that represents an animation testcase.
  * (e.g. a set of "from"/"to" values to test)
  */
 function AnimTestcase() {} // abstract => no constructor
 AnimTestcase.prototype =
 {
   // Member variables
   _animElementTagName : "animate", // Can be overridden for e.g. animateColor
   computedValMap      : null,
   skipReason          : null,
   // Methods
   /**
    * runTest: Runs this AnimTestcase
    *
    * @param aTargetElem The node to be targeted in our test animation.
    * @param aTargetAttr An Attribute object representing the attribute
    *                    to be targeted in our test animation.
    * @param aTimeData A SMILTimingData object with timing information for
    *                  our test animation.
    * @param aIsFreeze If true, indicates that our test animation should use
    *                  fill="freeze"; otherwise, we'll default to fill="remove".
    */
   runTest : function(aTargetElem, aTargetAttr, aTimeData, aIsFreeze)
   {
     // SANITY CHECKS
     if (!SMILUtil.getSVGRoot().animationsPaused()) {
       ok(false, "Should start each test with animations paused");
     }
     if (SMILUtil.getSVGRoot().getCurrentTime() != 0) {
       ok(false, "Should start each test at time = 0");
     }
     // SET UP
     // Cache initial computed value
     var baseVal = SMILUtil.getAttributeValue(aTargetElem, aTargetAttr);
     // Create & append animation element
     var anim = this.setupAnimationElement(aTargetAttr, aTimeData, aIsFreeze);
     aTargetElem.appendChild(anim);
     // Build a list of [seek-time, expectedValue, errorMessage] triplets
     var seekList = this.buildSeekList(aTargetAttr, baseVal, aTimeData, aIsFreeze);
     // DO THE ACTUAL TESTING
     this.seekAndTest(seekList, aTargetElem, aTargetAttr);
     // CLEAN UP
     aTargetElem.removeChild(anim);
     SMILUtil.getSVGRoot().setCurrentTime(0);
   },
   // HELPER FUNCTIONS
   // setupAnimationElement: <animate> element
   // Subclasses should extend this parent method
   setupAnimationElement : function(aAnimAttr, aTimeData, aIsFreeze)
   {
     var animElement = document.createElementNS(SVG_NS,
                                                this._animElementTagName);
     animElement.setAttribute("attributeName", aAnimAttr.attrName);
     animElement.setAttribute("attributeType", aAnimAttr.attrType);
     animElement.setAttribute("begin", aTimeData.getBeginTime());
     animElement.setAttribute("dur", aTimeData.getDur());
     if (aIsFreeze) {
       animElement.setAttribute("fill", "freeze");
     }
     return animElement;
   },
   buildSeekList : function(aAnimAttr, aBaseVal, aTimeData, aIsFreeze)
   {
     if (!aAnimAttr.isAnimatable) {
       return this.buildSeekListStatic(aAnimAttr, aBaseVal, aTimeData,
                                       "defined as non-animatable in SVG spec");
     }
     if (this.computedValMap.noEffect) {
       return this.buildSeekListStatic(aAnimAttr, aBaseVal, aTimeData,
                                       "testcase specified to have no effect");
     }
     return this.buildSeekListAnimated(aAnimAttr, aBaseVal,
                                       aTimeData, aIsFreeze)
   },
   seekAndTest : function(aSeekList, aTargetElem, aTargetAttr)
   {
     var svg = document.getElementById("svg");
     for (var i in aSeekList) {
       var entry = aSeekList[i];
       SMILUtil.getSVGRoot().setCurrentTime(entry[0]);
       is(SMILUtil.getAttributeValue(aTargetElem, aTargetAttr),
          entry[1], entry[2]);
     }
   },
   // methods that expect to be overridden in subclasses
   buildSeekListStatic : function(aAnimAttr, aBaseVal,
                                  aTimeData, aReasonStatic) {},
   buildSeekListAnimated : function(aAnimAttr, aBaseVal,
                                    aTimeData, aIsFreeze) {},
 };
 // Abstract parent class to share code between from-to & from-by testcases.
 function AnimTestcaseFrom() {} // abstract => no constructor
 AnimTestcaseFrom.prototype =
 {
   // Member variables
   from           : null,
   // Methods
   setupAnimationElement : function(aAnimAttr, aTimeData, aIsFreeze)
   {
     // Call super, and then add my own customization
     var animElem = AnimTestcase.prototype.setupAnimationElement.apply(this,
                                          [aAnimAttr, aTimeData, aIsFreeze]);
     animElem.setAttribute("from", this.from)
     return animElem;
   },
   buildSeekListStatic : function(aAnimAttr, aBaseVal, aTimeData, aReasonStatic)
   {
     var seekList = new Array();
     var msgPrefix = aAnimAttr.attrName +
       ": shouldn't be affected by animation ";
     seekList.push([aTimeData.getBeginTime(), aBaseVal,
                    msgPrefix + "(at animation begin) - " + aReasonStatic]);
     seekList.push([aTimeData.getFractionalTime(1/2), aBaseVal,
                    msgPrefix + "(at animation mid) - " + aReasonStatic]);
     seekList.push([aTimeData.getEndTime(), aBaseVal,
                    msgPrefix + "(at animation end) - " + aReasonStatic]);
     seekList.push([aTimeData.getEndTime() + aTimeData.getDur(), aBaseVal,
                    msgPrefix + "(after animation end) - " + aReasonStatic]);
     return seekList;
   },
   buildSeekListAnimated : function(aAnimAttr, aBaseVal, aTimeData, aIsFreeze)
   {
     var seekList = new Array();
     var msgPrefix = aAnimAttr.attrName + ": ";
     if (aTimeData.getBeginTime() > 0.1) {
       seekList.push([aTimeData.getBeginTime() - 0.1,
                     aBaseVal,
                      msgPrefix + "checking that base value is set " +
                      "before start of animation"]);
     }
     seekList.push([aTimeData.getBeginTime(),
                    this.computedValMap.fromComp || this.from,
                    msgPrefix + "checking that 'from' value is set " +
                    "at start of animation"]);
     seekList.push([aTimeData.getFractionalTime(1/2),
                    this.computedValMap.midComp ||
                    this.computedValMap.toComp || this.to,
                    msgPrefix + "checking value halfway through animation"]);
     var finalMsg;
     var expectedEndVal;
     if (aIsFreeze) {
       expectedEndVal = this.computedValMap.toComp || this.to;
       finalMsg = msgPrefix + "[freeze-mode] checking that final value is set ";
     } else {
       expectedEndVal = aBaseVal;
       finalMsg = msgPrefix +
         "[remove-mode] checking that animation is cleared ";
     }
     seekList.push([aTimeData.getEndTime(),
                    expectedEndVal, finalMsg + "at end of animation"]);
     seekList.push([aTimeData.getEndTime() + aTimeData.getDur(),
                    expectedEndVal, finalMsg + "after end of animation"]);
     return seekList;
   },
 }
 extend(AnimTestcaseFrom, AnimTestcase);
 /*
  * A testcase for a simple "from-to" animation
  * @param aFrom  The 'from' value
  * @param aTo    The 'to' value
  * @param aComputedValMap  A hash-map that contains some computed values,
  *                         if they're needed, as follows:
  *    - fromComp: Computed value version of |aFrom| (if different from |aFrom|)
  *    - midComp:  Computed value that we expect to visit halfway through the
  *                animation (if different from |aTo|)
  *    - toComp:   Computed value version of |aTo| (if different from |aTo|)
  *    - noEffect: Special flag -- if set, indicates that this testcase is
  *                expected to have no effect on the computed value. (e.g. the
  *                given values are invalid.)
  * @param aSkipReason  If this test-case is known to currently fail, this
  *                     parameter should be a string explaining why.
  *                     Otherwise, this value should be null (or omitted).
  *
  */
 function AnimTestcaseFromTo(aFrom, aTo, aComputedValMap, aSkipReason)
 {
   this.from           = aFrom;
   this.to             = aTo;
   this.computedValMap = aComputedValMap || {}; // Let aComputedValMap be omitted
   this.skipReason     = aSkipReason;
 }
 AnimTestcaseFromTo.prototype =
 {
   // Member variables
   to : null,
   // Methods
   setupAnimationElement : function(aAnimAttr, aTimeData, aIsFreeze)
   {
     // Call super, and then add my own customization
     var animElem = AnimTestcaseFrom.prototype.setupAnimationElement.apply(this,
                                             [aAnimAttr, aTimeData, aIsFreeze]);
     animElem.setAttribute("to", this.to)
     return animElem;
   },
 }
 extend(AnimTestcaseFromTo, AnimTestcaseFrom);
 /*
  * A testcase for a simple "from-by" animation.
  *
  * @param aFrom  The 'from' value
  * @param aBy    The 'by' value
  * @param aComputedValMap  A hash-map that contains some computed values that
  *                         we expect to visit, as follows:
  *    - fromComp: Computed value version of |aFrom| (if different from |aFrom|)
  *    - midComp:  Computed value that we expect to visit halfway through the
  *                animation (|aFrom| + |aBy|/2)
  *    - toComp:   Computed value of the animation endpoint (|aFrom| + |aBy|)
  *    - noEffect: Special flag -- if set, indicates that this testcase is
  *                expected to have no effect on the computed value. (e.g. the
  *                given values are invalid.  Or the attribute may be animatable
  *                and additive, but the particular "from" & "by" values that
  *                are used don't support addition.)
  * @param aSkipReason  If this test-case is known to currently fail, this
  *                     parameter should be a string explaining why.
  *                     Otherwise, this value should be null (or omitted).
  */
 function AnimTestcaseFromBy(aFrom, aBy, aComputedValMap, aSkipReason)
 {
   this.from           = aFrom;
   this.by             = aBy;
   this.computedValMap = aComputedValMap;
   this.skipReason     = aSkipReason;
   if (this.computedValMap &&
       !this.computedValMap.noEffect && !this.computedValMap.toComp) {
     ok(false, "AnimTestcaseFromBy needs expected computed final value");
   }
 }
 AnimTestcaseFromBy.prototype =
 {
   // Member variables
   by : null,
   // Methods
   setupAnimationElement : function(aAnimAttr, aTimeData, aIsFreeze)
   {
     // Call super, and then add my own customization
     var animElem = AnimTestcaseFrom.prototype.setupAnimationElement.apply(this,
                                             [aAnimAttr, aTimeData, aIsFreeze]);
     animElem.setAttribute("by", this.by)
     return animElem;
   },
   buildSeekList : function(aAnimAttr, aBaseVal, aTimeData, aIsFreeze)
   {
     if (!aAnimAttr.isAdditive) {
       return this.buildSeekListStatic(aAnimAttr, aBaseVal, aTimeData,
                                       "defined as non-additive in SVG spec");
     }
     // Just use inherited method
     return AnimTestcaseFrom.prototype.buildSeekList.apply(this,
                                 [aAnimAttr, aBaseVal, aTimeData, aIsFreeze]);
   },
 }
 extend(AnimTestcaseFromBy, AnimTestcaseFrom);
 /*
  * A testcase for a "paced-mode" animation
  * @param aValues   An array of values, to be used as the "Values" list
  * @param aComputedValMap  A hash-map that contains some computed values,
  *                         if they're needed, as follows:
  *      - comp0:   The computed value at the start of the animation
  *      - comp1_6: The computed value exactly 1/6 through animation
  *      - comp1_3: The computed value exactly 1/3 through animation
  *      - comp2_3: The computed value exactly 2/3 through animation
  *      - comp1:   The computed value of the animation endpoint
  *  The math works out easiest if...
  *    (a) aValuesString has 3 entries in its values list: vA, vB, vC
  *    (b) dist(vB, vC) = 2 * dist(vA, vB)
  *  With this setup, we can come up with expected intermediate values according
  *  to the following rules:
  *    - comp0 should be vA
  *    - comp1_6 should be us halfway between vA and vB
  *    - comp1_3 should be vB
  *    - comp2_3 should be halfway between vB and vC
  *    - comp1 should be vC
  * @param aSkipReason  If this test-case is known to currently fail, this
  *                     parameter should be a string explaining why.
  *                     Otherwise, this value should be null (or omitted).
  */
 function AnimTestcasePaced(aValuesString, aComputedValMap, aSkipReason)
 {
   this.valuesString   = aValuesString;
   this.computedValMap = aComputedValMap;
   this.skipReason     = aSkipReason;
   if (this.computedValMap &&
       (!this.computedValMap.comp0 ||
        !this.computedValMap.comp1_6 ||
        !this.computedValMap.comp1_3 ||
        !this.computedValMap.comp2_3 ||
        !this.computedValMap.comp1)) {
     ok(false, "This AnimTestcasePaced has an incomplete computed value map");
   }
 }
 AnimTestcasePaced.prototype =
 {
   // Member variables
   valuesString : null,
   // Methods
   setupAnimationElement : function(aAnimAttr, aTimeData, aIsFreeze)
   {
     // Call super, and then add my own customization
     var animElem = AnimTestcase.prototype.setupAnimationElement.apply(this,
                                             [aAnimAttr, aTimeData, aIsFreeze]);
     animElem.setAttribute("values", this.valuesString)
     animElem.setAttribute("calcMode", "paced");
     return animElem;
   },
   buildSeekListAnimated : function(aAnimAttr, aBaseVal, aTimeData, aIsFreeze)
   {
     var seekList = new Array();
     var msgPrefix = aAnimAttr.attrName + ": checking value ";
     seekList.push([aTimeData.getBeginTime(),
                    this.computedValMap.comp0,
                    msgPrefix + "at start of animation"]);
     seekList.push([aTimeData.getFractionalTime(1/6),
                    this.computedValMap.comp1_6,
                    msgPrefix + "1/6 of the way through animation."]);
     seekList.push([aTimeData.getFractionalTime(1/3),
                    this.computedValMap.comp1_3,
                    msgPrefix + "1/3 of the way through animation."]);
     seekList.push([aTimeData.getFractionalTime(2/3),
                    this.computedValMap.comp2_3,
                    msgPrefix + "2/3 of the way through animation."]);
     var finalMsg;
     var expectedEndVal;
     if (aIsFreeze) {
       expectedEndVal = this.computedValMap.comp1;
       finalMsg = aAnimAttr.attrName +
         ": [freeze-mode] checking that final value is set ";
     } else {
       expectedEndVal = aBaseVal;
       finalMsg = aAnimAttr.attrName +
         ": [remove-mode] checking that animation is cleared ";
     }
     seekList.push([aTimeData.getEndTime(),
                    expectedEndVal, finalMsg + "at end of animation"]);
     seekList.push([aTimeData.getEndTime() + aTimeData.getDur(),
                    expectedEndVal, finalMsg + "after end of animation"]);
     return seekList;
   },
   buildSeekListStatic : function(aAnimAttr, aBaseVal, aTimeData, aReasonStatic)
   {
     var seekList = new Array();
     var msgPrefix =
       aAnimAttr.attrName + ": shouldn't be affected by animation ";
     seekList.push([aTimeData.getBeginTime(), aBaseVal,
                    msgPrefix + "(at animation begin) - " + aReasonStatic]);
     seekList.push([aTimeData.getFractionalTime(1/6), aBaseVal,
                    msgPrefix + "(1/6 of the way through animation) - " +
                    aReasonStatic]);
     seekList.push([aTimeData.getFractionalTime(1/3), aBaseVal,
                    msgPrefix + "(1/3 of the way through animation) - " +
                    aReasonStatic]);
     seekList.push([aTimeData.getFractionalTime(2/3), aBaseVal,
                    msgPrefix + "(2/3 of the way through animation) - " +
                    aReasonStatic]);
     seekList.push([aTimeData.getEndTime(), aBaseVal,
                    msgPrefix + "(at animation end) - " + aReasonStatic]);
     seekList.push([aTimeData.getEndTime() + aTimeData.getDur(), aBaseVal,
                    msgPrefix + "(after animation end) - " + aReasonStatic]);
     return seekList;
   },
 };
 extend(AnimTestcasePaced, AnimTestcase);
 /*
  * A testcase for an <animateMotion> animation.
  *
  * @param aAttrValueHash   A hash-map mapping attribute names to values.
  *                         Should include at least 'path', 'values', 'to'
  *                         or 'by' to describe the motion path.
  * @param aCtmMap  A hash-map that contains summaries of the expected resulting
  *                 CTM at various points during the animation. The CTM is
  *                 summarized as a tuple of three numbers: [tX, tY, theta]
                    (indicating a translate(tX,tY) followed by a rotate(theta))
  *      - ctm0:   The CTM summary at the start of the animation
  *      - ctm1_6: The CTM summary at exactly 1/6 through animation
  *      - ctm1_3: The CTM summary at exactly 1/3 through animation
  *      - ctm2_3: The CTM summary at exactly 2/3 through animation
  *      - ctm1:   The CTM summary at the animation endpoint
  *
  *  NOTE: For paced-mode animation (the default for animateMotion), the math
  *  works out easiest if:
  *    (a) our motion path has 3 points: vA, vB, vC
  *    (b) dist(vB, vC) = 2 * dist(vA, vB)
  *  (See discussion in header comment for AnimTestcasePaced.)
  *
  * @param aSkipReason  If this test-case is known to currently fail, this
  *                     parameter should be a string explaining why.
  *                     Otherwise, this value should be null (or omitted).
  */
 function AnimMotionTestcase(aAttrValueHash, aCtmMap, aSkipReason)
 {
   this.attrValueHash = aAttrValueHash;
   this.ctmMap        = aCtmMap;
   this.skipReason    = aSkipReason;
   if (this.ctmMap &&
       (!this.ctmMap.ctm0 ||
        !this.ctmMap.ctm1_6 ||
        !this.ctmMap.ctm1_3 ||
        !this.ctmMap.ctm2_3 ||
        !this.ctmMap.ctm1)) {
     ok(false, "This AnimMotionTestcase has an incomplete CTM map");
   }
 }
 AnimMotionTestcase.prototype =
 {
   // Member variables
   _animElementTagName : "animateMotion",
   // Implementations of inherited methods that we need to override:
   // --------------------------------------------------------------
   setupAnimationElement : function(aAnimAttr, aTimeData, aIsFreeze)
   {
     var animElement = document.createElementNS(SVG_NS,
                                                this._animElementTagName);
     animElement.setAttribute("begin", aTimeData.getBeginTime());
     animElement.setAttribute("dur", aTimeData.getDur());
     if (aIsFreeze) {
       animElement.setAttribute("fill", "freeze");
     }
     for (var attrName in this.attrValueHash) {
       if (attrName == "mpath") {
         this.createPath(this.attrValueHash[attrName]);
         this.createMpath(animElement);
       } else {
         animElement.setAttribute(attrName, this.attrValueHash[attrName]);
       }
     }
     return animElement;
   },
   createPath : function(aPathDescription)
   {
     var path = document.createElementNS(SVG_NS, "path");
     path.setAttribute("d", aPathDescription);
     path.setAttribute("id", MPATH_TARGET_ID);
     return SMILUtil.getSVGRoot().appendChild(path);
   },
   createMpath : function(aAnimElement)
   {
     var mpath = document.createElementNS(SVG_NS, "mpath");
     mpath.setAttributeNS(XLINK_NS, "href", "#" + MPATH_TARGET_ID);
     return aAnimElement.appendChild(mpath);
   },
   // Override inherited seekAndTest method since...
   // (a) it expects a computedValMap and we have a computed-CTM map instead
   // and (b) it expects we might have no effect (for non-animatable attrs)
   buildSeekList : function(aAnimAttr, aBaseVal, aTimeData, aIsFreeze)
   {
     var seekList = new Array();
     var msgPrefix = "CTM mismatch ";
     seekList.push([aTimeData.getBeginTime(),
                    CTMUtil.generateCTM(this.ctmMap.ctm0),
                    msgPrefix + "at start of animation"]);
     seekList.push([aTimeData.getFractionalTime(1/6),
                    CTMUtil.generateCTM(this.ctmMap.ctm1_6),
                    msgPrefix + "1/6 of the way through animation."]);
     seekList.push([aTimeData.getFractionalTime(1/3),
                    CTMUtil.generateCTM(this.ctmMap.ctm1_3),
                    msgPrefix + "1/3 of the way through animation."]);
     seekList.push([aTimeData.getFractionalTime(2/3),
                    CTMUtil.generateCTM(this.ctmMap.ctm2_3),
                    msgPrefix + "2/3 of the way through animation."]);
     var finalMsg;
     var expectedEndVal;
     if (aIsFreeze) {
       expectedEndVal = CTMUtil.generateCTM(this.ctmMap.ctm1);
       finalMsg = aAnimAttr.attrName +
         ": [freeze-mode] checking that final value is set ";
     } else {
       expectedEndVal = aBaseVal;
       finalMsg = aAnimAttr.attrName +
         ": [remove-mode] checking that animation is cleared ";
     }
     seekList.push([aTimeData.getEndTime(),
                    expectedEndVal, finalMsg + "at end of animation"]);
     seekList.push([aTimeData.getEndTime() + aTimeData.getDur(),
                    expectedEndVal, finalMsg + "after end of animation"]);
     return seekList;
   },
   // Override inherited seekAndTest method
   // (Have to use assertCTMEqual() instead of is() for comparison, to check each
   // component of the CTM and to allow for a small margin of error.)
   seekAndTest : function(aSeekList, aTargetElem, aTargetAttr)
   {
     var svg = document.getElementById("svg");
     for (var i in aSeekList) {
       var entry = aSeekList[i];
       SMILUtil.getSVGRoot().setCurrentTime(entry[0]);
       CTMUtil.assertCTMEqual(aTargetElem.getCTM(), entry[1],
                              CTMUtil.CTM_COMPONENTS_ALL, entry[2], false);
     }
   },
   // Override "runTest" method so we can remove any <path> element that we
   // created at the end of each test.
   runTest : function(aTargetElem, aTargetAttr, aTimeData, aIsFreeze)
   {
     AnimTestcase.prototype.runTest.apply(this,
                              [aTargetElem, aTargetAttr, aTimeData, aIsFreeze]);
     var pathElem = document.getElementById(MPATH_TARGET_ID);
     if (pathElem) {
       SMILUtil.getSVGRoot().removeChild(pathElem);
     }
   }
 };
 extend(AnimMotionTestcase, AnimTestcase);
 // MAIN METHOD
 function testBundleList(aBundleList, aTimingData)
 {
   for (var bundleIdx in aBundleList) {
     aBundleList[bundleIdx].go(aTimingData);
   }
 }