npm_modules: Fork bower_components into Polymer 0.4.0 and 0.5.0 versions

polymer_0.5.0/bower_components/web-animations-js/test/js/matrix-interpolation.js

+suite('matrix interpolation', function() {
+  function compareMatrices(actual, expected, expectedLength) {
+    var actualElements = actual.slice(
+        actual.indexOf('(') + 1, actual.lastIndexOf(')')).split(',');
+    assert.equal(actualElements.length, expectedLength);
+    for (var i = 0; i < expectedLength; i++)
+      assert.closeTo(Number(actualElements[i]), expected[i], 0.01);
+  }
+
+  function compareInterpolatedTransforms(actual, expected, timeFraction) {
+    var actualInterp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        actual[0],
+        actual[1]);
+    var expectedInterp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        expected[0],
+        expected[1]);
+    var evaluatedActualInterp = actualInterp(timeFraction);
+    var evaluatedExpectedInterp = expectedInterp(timeFraction);
+    var actualElements = evaluatedActualInterp.slice(
+        evaluatedActualInterp.indexOf('(') + 1,
+        evaluatedActualInterp.lastIndexOf(')')
+        ).split(',');
+    var expectedElements = evaluatedExpectedInterp.slice(
+        evaluatedExpectedInterp.indexOf('(') + 1,
+        evaluatedExpectedInterp.lastIndexOf(')')
+        ).split(',');
+    assert.equal(actualElements.length, expectedElements.length);
+    for (var i = 0; i < expectedElements.length; i++)
+      assert.closeTo(Number(actualElements[i]), Number(expectedElements[i]), 0.01);
+  }
+
+  test('transform interpolations with matrices only', function() {
+    var interpolatedMatrix = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'matrix(1, 0, 0, 1, 0, 0)',
+        'matrix(1, -0.2, 0, 1, 0, 0)');
+    var evaluatedInterp = interpolatedMatrix(0.5);
+    compareMatrices(evaluatedInterp, [1, -0.1, 0, 1, 0, 0], 6);
+
+    interpolatedMatrix = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'matrix(1, 0, 0, 1, 0, 0)',
+        'matrix3d(1, 1, 0, 0, -2, 1, 0, 0, 0, 0, 1, 0, 10, 10, 0, 1)');
+    evaluatedInterp = interpolatedMatrix(0.5);
+    compareMatrices(evaluatedInterp, [1.12, 0.46, -0.84, 1.34, 5, 5], 6);
+
+    interpolatedMatrix = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'matrix(1, 0, 0, 1, 0, 0)',
+        'matrix3d(1, 1, 3, 0, -2, 1, 0, 0, 0, 0, 1, 0, 10, 10, 0, 1)');
+    evaluatedInterp = interpolatedMatrix(0.5);
+    // FIXME: Values at 8, 9, 10 are different from Blink and FireFox, which give 0.31, 0.04, 1.01.
+    // Result looks the same.
+    compareMatrices(
+        evaluatedInterp,
+        [1.73, 0.67, 1.10, 0, -0.85, 1.34, 0.29, 0, -0.35, -0.22, 0.58, 0, 5, 5, 0, 1],
+        16);
+
+    interpolatedMatrix = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)',
+        'matrix3d(1, 2, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 10, 10, 1)');
+    evaluatedInterp = interpolatedMatrix(0.5);
+    compareMatrices(
+        evaluatedInterp,
+        [1.38, 0.85, 0, 0, 0.24, 1.00, 0, 0, 0, 0, 1, 0, 0, 5, 5, 1],
+        16);
+
+    interpolatedMatrix = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)',
+        'matrix3d(1, 1, 0, 0, -2, 1, 0, 0, 0, 0, 1, 0, 10, 10, 0, 1)');
+    evaluatedInterp = interpolatedMatrix(0.5);
+    compareMatrices(evaluatedInterp, [1.12, 0.46, -0.84, 1.34, 5, 5], 6);
+
+    // Test matrices with [3][3] != 1
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'matrix(1, 0, 0, 1, 0, 0)',
+        'matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 2)');
+    evaluatedInterp = interp(0.4);
+    compareMatrices(
+        evaluatedInterp,
+        [1, 0, 0, 1, 0, 0],
+        6);
+    evaluatedInterp = interp(0.6);
+    compareMatrices(
+        evaluatedInterp,
+        [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 2],
+        16);
+  });
+
+  test('transform interpolations with matrices and other functions', function() {
+    var interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'translate(100px) matrix(1, 0, 0, 1, 0, 0)',
+        'translate(10px) matrix(1, -0.2, 0, 1, 0, 0)');
+    var evaluatedInterp = interp(0.5);
+    var functions = evaluatedInterp.split(' ');
+    assert.equal(functions.length, 2);
+    assert.equal(functions[0], 'translate(55px,0px)');
+    compareMatrices(functions[1], [1, -0.1, 0, 1, 0, 0], 6);
+
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'translate(100px) matrix(1, 0, 0, 1, 0, 0) rotate(10deg)',
+        'translate(10px) matrix(1, -0.2, 0, 1, 0, 0) rotate(100deg)');
+    evaluatedInterp = interp(0.5);
+    functions = evaluatedInterp.split(' ');
+    assert.equal(functions.length, 3);
+    assert.equal(functions[0], 'translate(55px,0px)');
+    compareMatrices(functions[1], [1, -0.1, 0, 1, 0, 0], 6);
+    assert.equal(functions[2], 'rotate(55deg)');
+
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'translate(100px) matrix(1, 0, 0, 1, 0, 0) rotate(10deg)',
+        'translate(10px) matrix3d(1, 2, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 10, 10, 1) rotate(100deg)');
+    evaluatedInterp = interp(0.5);
+    functions = evaluatedInterp.split(' ');
+    assert.equal(functions.length, 3);
+    assert.equal(functions[0], 'translate(55px,0px)');
+    compareMatrices(
+        functions[1],
+        [1.38, 0.85, 0, 0, 0.24, 1.00, 0, 0, 0, 0, 1, 0, 0, 5, 5, 1],
+        16);
+    assert.equal(functions[2], 'rotate(55deg)');
+
+    // Contains matrices and requires matrix decomposition.
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'matrix(1, 0, 0, 1, 0, 0) translate(100px)',
+        'translate(10px) matrix(1, -0.2, 0, 1, 0, 0)');
+    evaluatedInterp = interp(0.5);
+    compareMatrices(evaluatedInterp, [1, -0.1, 0, 1, 55, 0], 6);
+
+    // Test matrices with [3][3] != 1
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'translate(100px) matrix(1, 0, 0, 1, 0, 0) rotate(10deg)',
+        'translate(10px) matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 2) rotate(100deg)');
+    evaluatedInterp = interp(0.4);
+    functions = evaluatedInterp.split(' ');
+    assert.equal(functions.length, 3);
+    assert.equal(functions[0], 'translate(64px,0px)');
+    compareMatrices(
+        functions[1],
+        [1, 0, 0, 1, 0, 0],
+        6);
+    assert.equal(functions[2], 'rotate(46deg)');
+    evaluatedInterp = interp(0.6);
+    functions = evaluatedInterp.split(' ');
+    assert.equal(functions.length, 3);
+    assert.equal(functions[0], 'translate(46px,0px)');
+    compareMatrices(
+        functions[1],
+        [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 2],
+        16);
+    assert.equal(functions[2], 'rotate(64deg)');
+
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'translate(10px) matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 2) rotate(100deg)',
+        'translate(100px) matrix(1, 0, 0, 1, 0, 0) rotate(10deg)');
+    evaluatedInterp = interp(0.4);
+    functions = evaluatedInterp.split(' ');
+    assert.equal(functions.length, 3);
+    assert.equal(functions[0], 'translate(46px,0px)');
+    compareMatrices(
+        functions[1],
+        [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 2],
+        16);
+    assert.equal(functions[2], 'rotate(64deg)');
+    evaluatedInterp = interp(0.6);
+    functions = evaluatedInterp.split(' ');
+    assert.equal(functions.length, 3);
+    assert.equal(functions[0], 'translate(64px,0px)');
+    compareMatrices(
+        functions[1],
+        [1, 0, 0, 1, 0, 0],
+        6);
+    assert.equal(functions[2], 'rotate(46deg)');
+  });
+
+  test('transform interpolations that require matrix decomposition', function() {
+    var interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'translate(10px)',
+        'scale(2)');
+    var evaluatedInterp = interp(0.4);
+    compareMatrices(evaluatedInterp, [1.4, 0, 0, 1.4, 6, 0], 6);
+
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'rotateX(10deg)',
+        'rotateY(20deg)');
+    evaluatedInterp = interp(0.4);
+    compareMatrices(
+        evaluatedInterp,
+        [0.99, 0.01, -0.14, 0, 0.01, 1.00, 0.10, 0, 0.14, -0.10, 0.98, 0, 0, 0, 0, 1],
+        16);
+
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'rotate(0rad) translate(0px)',
+        'translate(800px) rotate(9rad)');
+    evaluatedInterp = interp(0.4);
+    compareMatrices(evaluatedInterp, [0.47, 0.89, -0.89, 0.47, 320, 0], 6);
+
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'rotateX(10deg)',
+        'translate(10px) rotateX(200deg)');
+    evaluatedInterp = interp(0.4);
+    compareMatrices(
+        evaluatedInterp,
+        [1, 0, 0, 0, 0, 0.53, -0.85, 0, 0, 0.85, 0.53, 0, 4, 0, 0, 1],
+        16);
+
+    // This case agrees with FireFox and the spec, but not with the old polyfill or Blink. The old
+    // polyfill only does matrix decomposition on the rotate section of the function
+    // lists.
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'translate(0px)',
+        'translate(800px) rotate(9rad)');
+    evaluatedInterp = interp(0.4);
+    compareMatrices(evaluatedInterp, [0.47, 0.89, -0.89, 0.47, 320, 0], 6);
+
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'translate(0px, 0px) rotate(0deg) scale(1)',
+        'translate(900px, 190px) scale(3) rotate(9rad)');
+    evaluatedInterp = interp(0.4);
+    compareMatrices(evaluatedInterp, [0.84, 1.59, -1.59, 0.84, 360, 76], 6);
+
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'perspective(1000px)',
+        'perspective(200px)');
+    evaluatedInterp = interp(0.2);
+    compareMatrices(evaluatedInterp, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, -0.0018, 0, 0, 0, 1], 16);
+  });
+
+  test('transforms that decompose to a 2D matrix result in a 2D matrix transform in computed style', function() {
+    var target = document.createElement('div');
+    document.body.appendChild(target);
+
+    var player = target.animate(
+        [{transform: 'translate(100px)'},
+         {transform: 'rotate(45deg)'}],
+        2000);
+    player.currentTime = 500;
+    player.pause();
+
+    var styleTransform = getComputedStyle(target).transform || getComputedStyle(target).webkitTransform;
+    var elements = styleTransform.slice(
+        styleTransform.indexOf('(') + 1, styleTransform.lastIndexOf(')')).split(',');
+    assert.equal(elements.length, 6);
+  });
+
+  test('decompose various CSS properties', function() {
+    var interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'rotateX(110deg)',
+        'rotateX(10deg) matrix(1, 0, 0, 1, 0, 0)');
+    var evaluatedInterp = interp(0.5);
+    compareMatrices(evaluatedInterp, [1, 0, 0, 0, 0, 0.500, 0.866, 0, 0, -0.866, 0.500, 0, 0, 0, 0, 1], 16);
+
+    // FIXME: This test case differs from blink transitions which gives -1(this)
+    // This case agrees with FireFox transitions.
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'rotateY(10rad)',
+        'rotateY(2rad) matrix(1, 0, 0, 1, 0, 0)');
+    evaluatedInterp = interp(0.5);
+    compareMatrices(evaluatedInterp, [0.960, 0, 0.279, 0, 0, 1, 0, 0, -0.279, 0, 0.960, 0, 0, 0, 0, 1], 16);
+
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'rotate(320deg)',
+        'rotate(10deg) matrix(1, 0, 0, 1, 0, 0)');
+    evaluatedInterp = interp(0.5);
+    compareMatrices(evaluatedInterp, [0.966, -0.259, 0.259, 0.966, 0, 0], 6);
+
+    // FIXME: This test case differs from blink transitions which gives -1(this)
+    // This case agrees with FireFox transitions.
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'rotateZ(10rad)',
+        'rotateZ(2rad) matrix(1, 0, 0, 1, 0, 0)');
+    evaluatedInterp = interp(0.5);
+    compareMatrices(evaluatedInterp, [0.960, -0.279, 0.279, 0.960, 0, 0], 6);
+
+    // FIXME: This test case differs from blink transitions
+    // which gives matrix3d(-0.24, +0.91, +0.33, +0, +0.33, -0.24, +0.91, +0, +0.91, +0.33, -0.24, +0, +0, +0, +0, +1)
+    // versus our  matrix3d(+0.91, -0.24, +0.33, +0, +0.33, +0.91, -0.24, +0, -0.24, +0.33, +0.91, +0, +0, +0, +0, +1)
+    // This case agrees with FireFox transitions.
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'rotate3d(1, 1, 1, 100deg)',
+        'rotate3d(1, 1, 1, 200deg) matrix(1, 0, 0, 1, 0, 0)');
+    evaluatedInterp = interp(0.5);
+    compareMatrices(evaluatedInterp, [0.911, -0.244, 0.333, 0, 0.333, 0.911, -0.244, 0, -0.244, 0.333, 0.911, 0, 0, 0, 0, 1], 16);
+
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'scale(10)',
+        'scale(2) matrix(1, 0, 0, 1, 0, 0)');
+    evaluatedInterp = interp(0.5);
+    compareMatrices(evaluatedInterp, [6, 0, 0, 6, 0, 0], 6);
+
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'scalex(10)',
+        'scalex(2) matrix(1, 0, 0, 1, 0, 0)');
+    evaluatedInterp = interp(0.5);
+    compareMatrices(evaluatedInterp, [6, 0, 0, 1, 0, 0], 6);
+
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'scaley(10)',
+        'scaley(2) matrix(1, 0, 0, 1, 0, 0)');
+    evaluatedInterp = interp(0.5);
+    compareMatrices(evaluatedInterp, [1, 0, 0, 6, 0, 0], 6);
+
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'scalez(10)',
+        'scalez(2) matrix(1, 0, 0, 1, 0, 0)');
+    evaluatedInterp = interp(0.5);
+    compareMatrices(evaluatedInterp, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 6, 0, 0, 0, 0, 1], 16);
+
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'scale3d(6, 8, 10)',
+        'scale3d(2, 2, 2) matrix(1, 0, 0, 1, 0, 0)');
+    evaluatedInterp = interp(0.5);
+    compareMatrices(evaluatedInterp, [4, 0, 0, 0, 0, 5, 0, 0, 0, 0, 6, 0, 0, 0, 0, 1], 16);
+
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'skew(30deg)',
+        'skew(0deg) matrix(1, 0, 0, 1, 0, 0)');
+    evaluatedInterp = interp(0.5);
+    compareMatrices(evaluatedInterp, [1, 0, 0.289, 1, 0, 0], 6);
+
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'skewx(3rad)',
+        'skewx(1rad) matrix(1, 0, 0, 1, 0, 0)');
+    evaluatedInterp = interp(0.5);
+    compareMatrices(evaluatedInterp, [1, 0, 0.707, 1, 0, 0], 6);
+
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'skewy(3rad)',
+        'skewy(1rad) matrix(1, 0, 0, 1, 0, 0)');
+    evaluatedInterp = interp(0.5);
+    compareMatrices(evaluatedInterp, [1.301, 0.595, 0.174, 0.921, 0, 0], 6);
+
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'translate(10px, 20px)',
+        'translate(100px, 200px) matrix(1, 0, 0, 1, 0, 0)');
+    evaluatedInterp = interp(0.5);
+    compareMatrices(evaluatedInterp, [1, 0, 0, 1, 55, 110], 6);
+
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'translatex(10px)',
+        'translatex(100px) matrix(1, 0, 0, 1, 0, 0)');
+    evaluatedInterp = interp(0.5);
+    compareMatrices(evaluatedInterp, [1, 0, 0, 1, 55, 0], 6);
+
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'translatey(10px)',
+        'translatey(100px) matrix(1, 0, 0, 1, 0, 0)');
+    evaluatedInterp = interp(0.5);
+    compareMatrices(evaluatedInterp, [1, 0, 0, 1, 0, 55], 6);
+
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'translatez(20px)',
+        'translatez(200px) matrix(1, 0, 0, 1, 0, 0)');
+    evaluatedInterp = interp(0.5);
+    compareMatrices(evaluatedInterp, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 110, 1], 16);
+
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'translate3d(10px, 10px, 10px)',
+        'translate3d(20px, 20px, 20px) matrix(1, 0, 0, 1, 0, 0)');
+    evaluatedInterp = interp(0.5);
+    compareMatrices(evaluatedInterp, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 15, 15, 15, 1], 16);
+
+    interp = webAnimationsMinifill.propertyInterpolation(
+        'transform',
+        'perspective(300px)',
+        'perspective(900px) matrix(1, 0, 0, 1, 0, 0)');
+    evaluatedInterp = interp(0.5);
+    compareMatrices(evaluatedInterp, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, -0.002222, 0, 0, 0, 1], 16);
+  });
+
+  test('decompose various CSS properties with unsupported units', function() {
+    compareInterpolatedTransforms(
+        ['rotateX(110grad)', 'rotateX(10deg) matrix(1, 0, 0, 1, 0, 0)'],
+        ['rotateX(0deg)', 'rotateX(10deg) matrix(1, 0, 0, 1, 0, 0)'],
+        0.5);
+
+    compareInterpolatedTransforms(
+        ['rotateY(2turn)', 'rotateY(2rad) matrix(1, 0, 0, 1, 0, 0)'],
+        ['rotateY(0rad)', 'rotateY(2rad) matrix(1, 0, 0, 1, 0, 0)'],
+        0.5);
+
+    compareInterpolatedTransforms(
+        ['rotate(320deg)', 'rotateY(10grad) matrix(1, 0, 0, 1, 0, 0)'],
+        ['rotate(320deg)', 'rotateY(0deg) matrix(1, 0, 0, 1, 0, 0)'],
+        0.5);
+
+    compareInterpolatedTransforms(
+        ['rotateZ(10grad)', 'rotateZ(2rad) matrix(1, 0, 0, 1, 0, 0)'],
+        ['rotateZ(0rad)', 'rotateZ(2rad) matrix(1, 0, 0, 1, 0, 0)'],
+        0.5);
+
+    compareInterpolatedTransforms(
+        ['rotate3d(1, 1, 1, 100deg)', 'rotate3d(1, 1, 1, 2turn) matrix(1, 0, 0, 1, 0, 0)'],
+        ['rotate3d(1, 1, 1, 100deg)', 'rotate3d(1, 1, 1, 0deg) matrix(1, 0, 0, 1, 0, 0)'],
+        0.5);
+
+    compareInterpolatedTransforms(
+        ['skew(30grad)', 'skew(10deg) matrix(1, 0, 0, 1, 0, 0)'],
+        ['skew(0deg)', 'skew(10deg) matrix(1, 0, 0, 1, 0, 0)'],
+        0.5);
+
+    compareInterpolatedTransforms(
+        ['skewx(3grad)', 'skewx(1rad) matrix(1, 0, 0, 1, 0, 0)'],
+        ['skewx(0rad)', 'skewx(1rad) matrix(1, 0, 0, 1, 0, 0)'],
+        0.5);
+
+    compareInterpolatedTransforms(
+        ['skewy(3rad)', 'skewy(1grad) matrix(1, 0, 0, 1, 0, 0)'],
+        ['skewy(3rad)', 'skewy(0rad) matrix(1, 0, 0, 1, 0, 0)'],
+        0.5);
+
+    compareInterpolatedTransforms(
+        ['translate(10in, 20in)', 'translate(100px, 200px) matrix(1, 0, 0, 1, 0, 0)'],
+        ['translate(0px, 0px)', 'translate(100px, 200px) matrix(1, 0, 0, 1, 0, 0)'],
+        0.5);
+
+    compareInterpolatedTransforms(
+        ['translatex(20in)', 'translatex(200px) matrix(1, 0, 0, 1, 0, 0)'],
+        ['translatex(0px)', 'translatex(200px) matrix(1, 0, 0, 1, 0, 0)'],
+        0.5);
+
+    compareInterpolatedTransforms(
+        ['translatey(10in)', 'translatey(100px) matrix(1, 0, 0, 1, 0, 0)'],
+        ['translatey(0px)', 'translatey(100px) matrix(1, 0, 0, 1, 0, 0)'],
+        0.5);
+
+    compareInterpolatedTransforms(
+        ['translatez(10em)', 'translatez(100px) matrix(1, 0, 0, 1, 0, 0)'],
+        ['translatez(0px)', 'translatez(100px) matrix(1, 0, 0, 1, 0, 0)'],
+        0.5);
+
+    compareInterpolatedTransforms(
+        ['translate3d(10px, 10px, 10px)', 'translate3d(2rem, 2rem, 2rem) matrix(1, 0, 0, 1, 0, 0)'],
+        ['translate3d(10px, 10px, 10px)', 'translate3d(0px, 0px, 0px) matrix(1, 0, 0, 1, 0, 0)'],
+        0.5);
+
+    compareInterpolatedTransforms(
+        ['perspective(300px)', 'perspective(9em) matrix(1, 0, 0, 1, 0, 0)'],
+        ['perspective(300px)', 'perspective(0px) matrix(1, 0, 0, 1, 0, 0)'],
+        0.5);
+  });
+
+  test('transform interpolations involving matrices when matrix code is not available', function() {
+    // FIXME: This is vulnerable to module interface changes. Can we disable modules?
+    var composeMatrix = webAnimationsMinifill.composeMatrix;
+    var quat = webAnimationsMinifill.quat;
+    var dot = webAnimationsMinifill.dot;
+    var makeMatrixDecomposition = webAnimationsMinifill.makeMatrixDecomposition;
+    webAnimationsMinifill.composeMatrix = undefined;
+    webAnimationsMinifill.quat = undefined;
+    webAnimationsMinifill.dot = undefined;
+    webAnimationsMinifill.makeMatrixDecomposition = undefined;
+
+    var testFlipTransformLists = function(keyframeFrom, keyframeTo) {
+      var interp = webAnimationsMinifill.propertyInterpolation(
+          'transform',
+          keyframeFrom,
+          keyframeTo);
+      var evaluatedInterp = interp(0.49);
+      assert.equal(evaluatedInterp, keyframeFrom);
+      evaluatedInterp = interp(0.51);
+      assert.equal(evaluatedInterp, keyframeTo);
+    };
+
+    try {
+      // Function lists with just matrices.
+      testFlipTransformLists('matrix(1, 0, 0, 1, 0, 0)', 'matrix(1, -0.2, 0, 1, 0, 0)');
+      // Function lists with matrices and other functions.
+      testFlipTransformLists(
+          'translate(100px) matrix(1, 0, 0, 1, 0, 0) rotate(10deg)',
+          'translate(10px) matrix(1, -0.2, 0, 1, 0, 0) rotate(100deg)');
+      // Function lists that require matrix decomposition to be interpolated.
+      testFlipTransformLists('translate(10px)', 'scale(2)');
+      testFlipTransformLists('scale(2)', 'translate(10px)');
+      testFlipTransformLists('rotateX(10deg)', 'rotateY(20deg)');
+      testFlipTransformLists('rotateX(10deg)', 'translate(10px) rotateX(200deg)');
+      testFlipTransformLists(
+          'rotate(0rad) translate(0px)',
+          'translate(800px) rotate(9rad)');
+      testFlipTransformLists(
+          'translate(0px, 0px) rotate(0deg) scale(1)',
+          'scale(3) translate(300px, 90px) rotate(9rad)');
+      testFlipTransformLists(
+          'translate(0px, 0px) skew(30deg)',
+          'skew(0deg) translate(300px, 90px)');
+      testFlipTransformLists(
+          'matrix(1, 0, 0, 1, 0, 0) translate(100px)',
+          'translate(10px) matrix(1, -0.2, 0, 1, 0, 0)');
+    } finally {
+      webAnimationsMinifill.composeMatrix = composeMatrix;
+      webAnimationsMinifill.quat = quat;
+      webAnimationsMinifill.dot = dot;
+      webAnimationsMinifill.makeMatrixDecomposition = makeMatrixDecomposition;
+    }
+  });
+});