/* -*- indent-tabs-mode: nil; js-indent-level: 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/. */

/* testcase data for simple "from-to" animations of CSS properties */

// NOTE: This js file requires db_smilCSSPropertyList.js

// NOTE: I'm Including 'inherit' and 'currentColor' as interpolatable values.
// According to SVG Mobile 1.2 section 16.2.9, "keywords such as inherit which
// yield a numeric computed value may be included in the values list for an
// interpolated animation".

// Path of test URL (stripping off final slash + filename), for use in
// generating computed value of 'cursor' property
var _testPath = document.URL.substring(0, document.URL.lastIndexOf("/"));

// Lists of testcases for re-use across multiple properties of the same type
var _fromToTestLists = {
  color: [
    new AnimTestcaseFromTo("rgb(100, 100, 100)", "rgb(200, 200, 200)", {
      midComp: "rgb(150, 150, 150)",
    }),
    new AnimTestcaseFromTo("#F02000", "#0080A0", {
      fromComp: "rgb(240, 32, 0)",
      midComp: "rgb(120, 80, 80)",
      toComp: "rgb(0, 128, 160)",
    }),
    new AnimTestcaseFromTo("crimson", "lawngreen", {
      fromComp: "rgb(220, 20, 60)",
      midComp: "rgb(172, 136, 30)",
      toComp: "rgb(124, 252, 0)",
    }),
    new AnimTestcaseFromTo("currentColor", "rgb(100, 100, 100)", {
      fromComp: "rgb(50, 50, 50)",
      midComp: "rgb(75, 75, 75)",
    }),
    new AnimTestcaseFromTo(
      "rgba(10, 20, 30, 0.2)",
      "rgba(50, 50, 50, 1)",
      // (rgb(10, 20, 30) * 0.2 * 0.5 + rgb(50, 50, 50) * 1.0 * 0.5) * (1 / 0.6)
      { midComp: "rgba(43, 45, 47, 0.6)", toComp: "rgb(50, 50, 50)" }
    ),
  ],
  colorFromInheritBlack: [
    new AnimTestcaseFromTo("inherit", "rgb(200, 200, 200)", {
      fromComp: "rgb(0, 0, 0)",
      midComp: "rgb(100, 100, 100)",
    }),
  ],
  colorFromInheritWhite: [
    new AnimTestcaseFromTo("inherit", "rgb(205, 205, 205)", {
      fromComp: "rgb(255, 255, 255)",
      midComp: "rgb(230, 230, 230)",
    }),
  ],
  paintServer: [
    new AnimTestcaseFromTo("none", "none"),
    new AnimTestcaseFromTo("none", "blue", { toComp: "rgb(0, 0, 255)" }),
    new AnimTestcaseFromTo("rgb(50, 50, 50)", "none"),
    new AnimTestcaseFromTo(
      "url(#gradA)",
      "url(#gradB) currentColor",
      {
        fromComp: 'url("' + document.URL + '#gradA") rgb(0, 0, 0)',
        toComp: 'url("' + document.URL + '#gradB") rgb(50, 50, 50)',
      },
      "need support for URI-based paints"
    ),
    new AnimTestcaseFromTo(
      "url(#gradA) orange",
      "url(#gradB)",
      {
        fromComp: 'url("' + document.URL + '#gradA") rgb(255, 165, 0)',
        toComp: 'url("' + document.URL + '#gradB") rgb(0, 0, 0)',
      },
      "need support for URI-based paints"
    ),
    new AnimTestcaseFromTo(
      "url(#no_grad)",
      "url(#gradB)",
      {
        fromComp: 'url("' + document.URL + '#no_grad") ' + "rgb(0, 0, 0)",
        toComp: 'url("' + document.URL + '#gradB") rgb(0, 0, 0)',
      },
      "need support for URI-based paints"
    ),
    new AnimTestcaseFromTo(
      "url(#no_grad) rgb(1,2,3)",
      "url(#gradB) blue",
      {
        fromComp: 'url("' + document.URL + '#no_grad") ' + "rgb(1, 2, 3)",
        toComp: 'url("' + document.URL + '#gradB") rgb(0, 0, 255)',
      },
      "need support for URI-based paints"
    ),
  ],
  lengthNoUnits: [
    new AnimTestcaseFromTo("0", "20", {
      fromComp: "0px",
      midComp: "10px",
      toComp: "20px",
    }),
    new AnimTestcaseFromTo("50", "0", {
      fromComp: "50px",
      midComp: "25px",
      toComp: "0px",
    }),
    new AnimTestcaseFromTo("30", "80", {
      fromComp: "30px",
      midComp: "55px",
      toComp: "80px",
    }),
  ],
  lengthPx: [
    new AnimTestcaseFromTo("0px", "12px", {
      fromComp: "0px",
      midComp: "6px",
      toComp: "12px",
    }),
    new AnimTestcaseFromTo("16px", "0px", {
      fromComp: "16px",
      midComp: "8px",
      toComp: "0px",
    }),
    new AnimTestcaseFromTo("10px", "20px", {
      fromComp: "10px",
      midComp: "15px",
      toComp: "20px",
    }),
    new AnimTestcaseFromTo("41px", "1px", {
      fromComp: "41px",
      midComp: "21px",
      toComp: "1px",
    }),
  ],
  lengthPctSVG: [new AnimTestcaseFromTo("20.5%", "0.5%", { midComp: "10.5%" })],
  lengthPxPctSVG: [
    new AnimTestcaseFromTo(
      "10px",
      "10%",
      { midComp: "15px" },
      "need support for interpolating between " + "px and percent values"
    ),
  ],
  lengthPxNoUnitsSVG: [
    new AnimTestcaseFromTo("10", "20px", {
      fromComp: "10px",
      midComp: "15px",
      toComp: "20px",
    }),
    new AnimTestcaseFromTo("10px", "20", {
      fromComp: "10px",
      midComp: "15px",
      toComp: "20px",
    }),
  ],
  opacity: [
    new AnimTestcaseFromTo("1", "0", { midComp: "0.5" }),
    new AnimTestcaseFromTo("0.2", "0.12", { midComp: "0.16" }),
    new AnimTestcaseFromTo("0.5", "0.7", { midComp: "0.6" }),
    new AnimTestcaseFromTo("0.5", "inherit", { midComp: "0.75", toComp: "1" }),
    // Make sure we don't clamp out-of-range values before interpolation
    new AnimTestcaseFromTo(
      "0.2",
      "1.2",
      { midComp: "0.7", toComp: "1" },
      "opacities with abs val >1 get clamped too early"
    ),
    new AnimTestcaseFromTo("-0.2", "0.6", { fromComp: "0", midComp: "0.2" }),
    new AnimTestcaseFromTo(
      "-1.2",
      "1.6",
      { fromComp: "0", midComp: "0.2", toComp: "1" },
      "opacities with abs val >1 get clamped too early"
    ),
    new AnimTestcaseFromTo(
      "-0.6",
      "1.4",
      { fromComp: "0", midComp: "0.4", toComp: "1" },
      "opacities with abs val >1 get clamped too early"
    ),
  ],
  URIsAndNone: [
    new AnimTestcaseFromTo("url(#idA)", "url(#idB)", {
      fromComp: 'url("#idA")',
      toComp: 'url("#idB")',
    }),
    new AnimTestcaseFromTo("none", "url(#idB)", { toComp: 'url("#idB")' }),
    new AnimTestcaseFromTo("url(#idB)", "inherit", {
      fromComp: 'url("#idB")',
      toComp: "none",
    }),
  ],
};

function _tweakForLetterSpacing(testcases) {
  return testcases.map(function(t) {
    let valMap = Object.assign({}, t.computedValMap);
    for (let prop of Object.keys(valMap)) {
      if (valMap[prop] == "0px") {
        valMap[prop] = "normal";
      }
    }
    return new AnimTestcaseFromTo(t.from, t.to, valMap);
  });
}

// List of attribute/testcase-list bundles to be tested
var gFromToBundles = [
  new TestcaseBundle(gPropList.clip, [
    new AnimTestcaseFromTo(
      "rect(1px, 2px, 3px, 4px)",
      "rect(11px, 22px, 33px, 44px)",
      { midComp: "rect(6px, 12px, 18px, 24px)" }
    ),
    new AnimTestcaseFromTo(
      "rect(1px, auto, 3px, 4px)",
      "rect(11px, auto, 33px, 44px)",
      { midComp: "rect(6px, auto, 18px, 24px)" }
    ),
    new AnimTestcaseFromTo("auto", "auto"),
    new AnimTestcaseFromTo(
      "rect(auto, auto, auto, auto)",
      "rect(auto, auto, auto, auto)"
    ),
    // Interpolation not supported in these next cases (with auto --> px-value)
    new AnimTestcaseFromTo(
      "rect(1px, auto, 3px, auto)",
      "rect(11px, auto, 33px, 44px)"
    ),
    new AnimTestcaseFromTo(
      "rect(1px, 2px, 3px, 4px)",
      "rect(11px, auto, 33px, 44px)"
    ),
    new AnimTestcaseFromTo("rect(1px, 2px, 3px, 4px)", "auto"),
    new AnimTestcaseFromTo("auto", "rect(1px, 2px, 3px, 4px)"),
  ]),
  new TestcaseBundle(gPropList.clip_path, _fromToTestLists.URIsAndNone),
  new TestcaseBundle(gPropList.clip_rule, [
    new AnimTestcaseFromTo("nonzero", "evenodd"),
    new AnimTestcaseFromTo("evenodd", "inherit", { toComp: "nonzero" }),
  ]),
  new TestcaseBundle(
    gPropList.color,
    [].concat(_fromToTestLists.color, [
      // Note: inherited value is rgb(50, 50, 50) (set on <svg>)
      new AnimTestcaseFromTo("inherit", "rgb(200, 200, 200)", {
        fromComp: "rgb(50, 50, 50)",
        midComp: "rgb(125, 125, 125)",
      }),
    ])
  ),
  new TestcaseBundle(gPropList.color_interpolation, [
    new AnimTestcaseFromTo("sRGB", "auto", { fromComp: "srgb" }),
    new AnimTestcaseFromTo("inherit", "linearRGB", {
      fromComp: "srgb",
      toComp: "linearrgb",
    }),
  ]),
  new TestcaseBundle(gPropList.color_interpolation_filters, [
    new AnimTestcaseFromTo("sRGB", "auto", { fromComp: "srgb" }),
    new AnimTestcaseFromTo("auto", "inherit", { toComp: "linearrgb" }),
  ]),
  new TestcaseBundle(gPropList.cursor, [
    new AnimTestcaseFromTo("crosshair", "move"),
    new AnimTestcaseFromTo(
      "url('a.cur'), url('b.cur'), nw-resize",
      "sw-resize",
      {
        fromComp:
          'url("' +
          _testPath +
          '/a.cur"), ' +
          'url("' +
          _testPath +
          '/b.cur"), ' +
          "nw-resize",
      }
    ),
  ]),
  new TestcaseBundle(gPropList.direction, [
    new AnimTestcaseFromTo("ltr", "rtl"),
    new AnimTestcaseFromTo("rtl", "inherit"),
  ]),
  new TestcaseBundle(gPropList.display, [
    // I'm not testing the "inherit" value for "display", because part of
    // my test runs with "display: none" on everything, and so the
    // inherited value isn't always the same.  (i.e. the computed value
    // of 'inherit' will be different in different tests)
    new AnimTestcaseFromTo("block", "table-cell"),
    new AnimTestcaseFromTo("inline", "inline-table"),
    new AnimTestcaseFromTo("table-row", "none"),
  ]),
  new TestcaseBundle(gPropList.dominant_baseline, [
    new AnimTestcaseFromTo("alphabetic", "hanging"),
    new AnimTestcaseFromTo("mathematical", "central"),
    new AnimTestcaseFromTo("middle", "text-after-edge"),
    new AnimTestcaseFromTo("text-before-edge", "auto"),
    new AnimTestcaseFromTo("alphabetic", "inherit", { toComp: "auto" }),
  ]),
  // NOTE: Mozilla doesn't currently support "enable-background", but I'm
  // testing it here in case we ever add support for it, because it's
  // explicitly not animatable in the SVG spec.
  new TestcaseBundle(gPropList.enable_background, [
    new AnimTestcaseFromTo("new", "accumulate"),
  ]),
  new TestcaseBundle(
    gPropList.fill,
    [].concat(
      _fromToTestLists.color,
      _fromToTestLists.paintServer,
      _fromToTestLists.colorFromInheritBlack
    )
  ),
  new TestcaseBundle(gPropList.fill_opacity, _fromToTestLists.opacity),
  new TestcaseBundle(gPropList.fill_rule, [
    new AnimTestcaseFromTo("nonzero", "evenodd"),
    new AnimTestcaseFromTo("evenodd", "inherit", { toComp: "nonzero" }),
  ]),
  new TestcaseBundle(gPropList.filter, _fromToTestLists.URIsAndNone),
  new TestcaseBundle(
    gPropList.flood_color,
    [].concat(_fromToTestLists.color, _fromToTestLists.colorFromInheritBlack)
  ),
  new TestcaseBundle(gPropList.flood_opacity, _fromToTestLists.opacity),
  new TestcaseBundle(gPropList.font, [
    // NOTE: 'line-height' is hard-wired at 10px in test_smilCSSFromTo.xhtml
    // because if it's not explicitly set, its value varies across platforms.
    // NOTE: System font values can't be tested here, because their computed
    // values vary from platform to platform.  However, they are tested
    // visually, in the reftest "anim-css-font-1.svg"
    new AnimTestcaseFromTo("10px serif", "30px serif", {
      fromComp: "normal normal 400 10px / 10px serif",
      toComp: "normal normal 400 30px / 10px serif",
    }),
    new AnimTestcaseFromTo("10px serif", "30px sans-serif", {
      fromComp: "normal normal 400 10px / 10px serif",
      toComp: "normal normal 400 30px / 10px sans-serif",
    }),
    new AnimTestcaseFromTo("1px / 90px cursive", "100px monospace", {
      fromComp: "normal normal 400 1px / 10px cursive",
      toComp: "normal normal 400 100px / 10px monospace",
    }),
    new AnimTestcaseFromTo(
      "italic small-caps 200 1px cursive",
      "100px monospace",
      {
        fromComp: "italic small-caps 200 1px / 10px cursive",
        toComp: "normal normal 400 100px / 10px monospace",
      }
    ),
    new AnimTestcaseFromTo(
      "oblique normal 200 30px / 10px cursive",
      "normal small-caps 800 40px / 10px serif"
    ),
  ]),
  new TestcaseBundle(gPropList.font_family, [
    new AnimTestcaseFromTo("serif", "sans-serif"),
    new AnimTestcaseFromTo("cursive", "monospace"),
  ]),
  new TestcaseBundle(
    gPropList.font_size,
    [].concat(_fromToTestLists.lengthNoUnits, _fromToTestLists.lengthPx, [
      new AnimTestcaseFromTo("10px", "40%", {
        midComp: "15px",
        toComp: "20px",
      }),
      new AnimTestcaseFromTo("160%", "80%", {
        fromComp: "80px",
        midComp: "60px",
        toComp: "40px",
      }),
    ])
  ),
  new TestcaseBundle(gPropList.font_size_adjust, [
    new AnimTestcaseFromTo("0.9", "0.1", { midComp: "0.5" }),
    new AnimTestcaseFromTo("0.5", "0.6", { midComp: "0.55" }),
    new AnimTestcaseFromTo("none", "0.4"),
  ]),
  new TestcaseBundle(gPropList.font_stretch, [
    new AnimTestcaseFromTo(
      "normal",
      "wider",
      {},
      "need support for animating between " + "relative 'font-stretch' values"
    ),
    new AnimTestcaseFromTo(
      "narrower",
      "ultra-condensed",
      {},
      "need support for animating between " + "relative 'font-stretch' values"
    ),
    new AnimTestcaseFromTo("ultra-condensed", "condensed", {
      fromComp: "50%",
      midComp: "62.5%",
      toComp: "75%",
    }),
    new AnimTestcaseFromTo("semi-condensed", "semi-expanded", {
      fromComp: "87.5%",
      midComp: "100%",
      toComp: "112.5%",
    }),
    new AnimTestcaseFromTo("expanded", "ultra-expanded", {
      fromComp: "125%",
      midComp: "162.5%",
      toComp: "200%",
    }),
    new AnimTestcaseFromTo("ultra-expanded", "inherit", {
      fromComp: "200%",
      midComp: "150%",
      toComp: "100%",
    }),
  ]),
  new TestcaseBundle(gPropList.font_style, [
    new AnimTestcaseFromTo("italic", "inherit", { toComp: "normal" }),
    new AnimTestcaseFromTo("normal", "italic"),
    new AnimTestcaseFromTo("italic", "oblique"),
    new AnimTestcaseFromTo("oblique", "normal"),
  ]),
  new TestcaseBundle(gPropList.font_variant, [
    new AnimTestcaseFromTo("inherit", "small-caps", { fromComp: "normal" }),
    new AnimTestcaseFromTo("small-caps", "normal"),
  ]),
  new TestcaseBundle(gPropList.font_weight, [
    new AnimTestcaseFromTo("100", "900", { midComp: "500" }),
    new AnimTestcaseFromTo("700", "100", { midComp: "400" }),
    new AnimTestcaseFromTo("inherit", "200", {
      fromComp: "400",
      midComp: "300",
    }),
    new AnimTestcaseFromTo("normal", "bold", {
      fromComp: "400",
      midComp: "550",
      toComp: "700",
    }),
    new AnimTestcaseFromTo(
      "lighter",
      "bolder",
      {},
      "need support for animating between " + "relative 'font-weight' values"
    ),
  ]),
  // NOTE: Mozilla doesn't currently support "glyph-orientation-horizontal" or
  // "glyph-orientation-vertical", but I'm testing them here in case we ever
  // add support for them, because they're explicitly not animatable in the SVG
  // spec.
  new TestcaseBundle(gPropList.glyph_orientation_horizontal, [
    new AnimTestcaseFromTo("45deg", "60deg"),
  ]),
  new TestcaseBundle(gPropList.glyph_orientation_vertical, [
    new AnimTestcaseFromTo("45deg", "60deg"),
  ]),
  new TestcaseBundle(gPropList.image_rendering, [
    new AnimTestcaseFromTo("auto", "optimizeQuality", {
      toComp: "optimizequality",
    }),
    new AnimTestcaseFromTo("optimizeQuality", "optimizeSpeed", {
      fromComp: "optimizequality",
      toComp: "optimizespeed",
    }),
  ]),
  new TestcaseBundle(
    gPropList.letter_spacing,
    _tweakForLetterSpacing(
      [].concat(_fromToTestLists.lengthNoUnits, _fromToTestLists.lengthPx)
    )
  ),
  new TestcaseBundle(
    gPropList.lighting_color,
    [].concat(_fromToTestLists.color, _fromToTestLists.colorFromInheritWhite)
  ),
  new TestcaseBundle(gPropList.marker, _fromToTestLists.URIsAndNone),
  new TestcaseBundle(gPropList.marker_end, _fromToTestLists.URIsAndNone),
  new TestcaseBundle(gPropList.marker_mid, _fromToTestLists.URIsAndNone),
  new TestcaseBundle(gPropList.marker_start, _fromToTestLists.URIsAndNone),
  new TestcaseBundle(gPropList.mask, _fromToTestLists.URIsAndNone),
  new TestcaseBundle(gPropList.opacity, _fromToTestLists.opacity),
  new TestcaseBundle(gPropList.overflow, [
    new AnimTestcaseFromTo("auto", "visible"),
    new AnimTestcaseFromTo("inherit", "visible", { fromComp: "hidden" }),
    new AnimTestcaseFromTo("scroll", "auto"),
  ]),
  new TestcaseBundle(gPropList.pointer_events, [
    new AnimTestcaseFromTo("visibleFill", "stroke", {
      fromComp: "visiblefill",
    }),
    new AnimTestcaseFromTo("none", "visibleStroke", {
      toComp: "visiblestroke",
    }),
  ]),
  new TestcaseBundle(gPropList.shape_rendering, [
    new AnimTestcaseFromTo("auto", "optimizeSpeed", {
      toComp: "optimizespeed",
    }),
    new AnimTestcaseFromTo("crispEdges", "geometricPrecision", {
      fromComp: "crispedges",
      toComp: "geometricprecision",
    }),
  ]),
  new TestcaseBundle(
    gPropList.stop_color,
    [].concat(_fromToTestLists.color, _fromToTestLists.colorFromInheritBlack)
  ),
  new TestcaseBundle(gPropList.stop_opacity, _fromToTestLists.opacity),
  new TestcaseBundle(
    gPropList.stroke,
    [].concat(_fromToTestLists.color, _fromToTestLists.paintServer, [
      // Note: inherited value is "none" (the default for "stroke" property)
      new AnimTestcaseFromTo("inherit", "rgb(200, 200, 200)", {
        fromComp: "none",
      }),
    ])
  ),
  new TestcaseBundle(
    gPropList.stroke_dasharray,
    [].concat(_fromToTestLists.lengthPctSVG, [
      new AnimTestcaseFromTo("inherit", "20", { fromComp: "none" }),
      new AnimTestcaseFromTo("1", "none"),
      new AnimTestcaseFromTo("10", "20", { midComp: "15" }),
      new AnimTestcaseFromTo("1", "2, 3", {
        fromComp: "1, 1",
        midComp: "1.5, 2",
      }),
      new AnimTestcaseFromTo("2, 8", "6", { midComp: "4, 7" }),
      new AnimTestcaseFromTo("1, 3", "1, 3, 5, 7, 9", {
        fromComp: "1, 3, 1, 3, 1, 3, 1, 3, 1, 3",
        midComp: "1, 3, 3, 5, 5, 2, 2, 4, 4, 6",
      }),
    ])
  ),
  new TestcaseBundle(
    gPropList.stroke_dashoffset,
    [].concat(
      _fromToTestLists.lengthNoUnits,
      _fromToTestLists.lengthPx,
      _fromToTestLists.lengthPxPctSVG,
      _fromToTestLists.lengthPctSVG,
      _fromToTestLists.lengthPxNoUnitsSVG
    )
  ),
  new TestcaseBundle(gPropList.stroke_linecap, [
    new AnimTestcaseFromTo("butt", "round"),
    new AnimTestcaseFromTo("round", "square"),
  ]),
  new TestcaseBundle(gPropList.stroke_linejoin, [
    new AnimTestcaseFromTo("miter", "round"),
    new AnimTestcaseFromTo("round", "bevel"),
  ]),
  new TestcaseBundle(gPropList.stroke_miterlimit, [
    new AnimTestcaseFromTo("1", "2", { midComp: "1.5" }),
    new AnimTestcaseFromTo("20.1", "10.1", { midComp: "15.1" }),
  ]),
  new TestcaseBundle(gPropList.stroke_opacity, _fromToTestLists.opacity),
  new TestcaseBundle(
    gPropList.stroke_width,
    [].concat(
      _fromToTestLists.lengthNoUnits,
      _fromToTestLists.lengthPx,
      _fromToTestLists.lengthPxPctSVG,
      _fromToTestLists.lengthPctSVG,
      _fromToTestLists.lengthPxNoUnitsSVG,
      [
        new AnimTestcaseFromTo("inherit", "7px", {
          fromComp: "1px",
          midComp: "4px",
          toComp: "7px",
        }),
      ]
    )
  ),
  new TestcaseBundle(gPropList.text_anchor, [
    new AnimTestcaseFromTo("start", "middle"),
    new AnimTestcaseFromTo("middle", "end"),
  ]),
  new TestcaseBundle(gPropList.text_decoration_line, [
    new AnimTestcaseFromTo("none", "underline"),
    new AnimTestcaseFromTo("overline", "line-through"),
    new AnimTestcaseFromTo("blink", "underline"),
  ]),
  new TestcaseBundle(gPropList.text_rendering, [
    new AnimTestcaseFromTo("auto", "optimizeSpeed", {
      toComp: "optimizespeed",
    }),
    new AnimTestcaseFromTo("optimizeSpeed", "geometricPrecision", {
      fromComp: "optimizespeed",
      toComp: "geometricprecision",
    }),
    new AnimTestcaseFromTo("geometricPrecision", "optimizeLegibility", {
      fromComp: "geometricprecision",
      toComp: "optimizelegibility",
    }),
  ]),
  new TestcaseBundle(gPropList.unicode_bidi, [
    new AnimTestcaseFromTo("embed", "bidi-override"),
  ]),
  new TestcaseBundle(gPropList.vector_effect, [
    new AnimTestcaseFromTo("none", "non-scaling-stroke"),
  ]),
  new TestcaseBundle(gPropList.visibility, [
    new AnimTestcaseFromTo("visible", "hidden"),
    new AnimTestcaseFromTo("hidden", "collapse"),
  ]),
  new TestcaseBundle(
    gPropList.word_spacing,
    [].concat(
      _fromToTestLists.lengthNoUnits,
      _fromToTestLists.lengthPx,
      _fromToTestLists.lengthPxPctSVG
    )
  ),
  new TestcaseBundle(
    gPropList.word_spacing,
    _fromToTestLists.lengthPctSVG,
    "pct->pct animations don't currently work for " + "*-spacing properties"
  ),
  // NOTE: Mozilla doesn't currently support "writing-mode", but I'm
  // testing it here in case we ever add support for it, because it's
  // explicitly not animatable in the SVG spec.
  new TestcaseBundle(gPropList.writing_mode, [
    new AnimTestcaseFromTo("lr", "rl"),
  ]),
];