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chromium/third_party/blink/web_tests/external/wpt/svg/types/scripted/SVGAnimatedEnumeration-SVGMaskElement.html 

<!DOCTYPE HTML>
<title>Use of SVGAnimatedEnumeration within SVGMaskElement</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
test(function() {
  // This test checks the use of SVGAnimatedEnumeration within SVGMaskElement.

  var maskElement = document.createElementNS("http://www.w3.org/2000/svg", "mask");
  maskElement.setAttribute("maskUnits", "userSpaceOnUse");
  maskElement.setAttribute("maskContentUnits", "userSpaceOnUse");

  // maskUnits
  // Check initial 'maskUnits' value.
  assert_true(maskElement.maskUnits instanceof SVGAnimatedEnumeration);
  assert_equals(typeof(maskElement.maskUnits.baseVal), "number");
  assert_equals(maskElement.maskUnits.baseVal, SVGUnitTypes.SVG_UNIT_TYPE_USERSPACEONUSE);

  // Switch to 'objectBoundingBox'.
  maskElement.maskUnits.baseVal = SVGUnitTypes.SVG_UNIT_TYPE_OBJECTBOUNDINGBOX;
  assert_equals(maskElement.maskUnits.baseVal, SVGUnitTypes.SVG_UNIT_TYPE_OBJECTBOUNDINGBOX);
  assert_equals(maskElement.getAttribute('maskUnits'), "objectBoundingBox");

  // Try setting invalid values.
  assert_throws_js(TypeError, function() { maskElement.maskUnits.baseVal = 3; });
  assert_equals(maskElement.maskUnits.baseVal, SVGUnitTypes.SVG_UNIT_TYPE_OBJECTBOUNDINGBOX);
  assert_equals(maskElement.getAttribute('maskUnits'), "objectBoundingBox");

  assert_throws_js(TypeError, function() { maskElement.maskUnits.baseVal = -1; });
  assert_equals(maskElement.maskUnits.baseVal, SVGUnitTypes.SVG_UNIT_TYPE_OBJECTBOUNDINGBOX);
  assert_equals(maskElement.getAttribute('maskUnits'), "objectBoundingBox");

  assert_throws_js(TypeError, function() { maskElement.maskUnits.baseVal = 0; });
  assert_equals(maskElement.maskUnits.baseVal, SVGUnitTypes.SVG_UNIT_TYPE_OBJECTBOUNDINGBOX);
  assert_equals(maskElement.getAttribute('maskUnits'), "objectBoundingBox");

  // Switch to 'userSpaceOnUse'.
  maskElement.maskUnits.baseVal = SVGUnitTypes.SVG_UNIT_TYPE_USERSPACEONUSE;
  assert_equals(maskElement.maskUnits.baseVal, SVGUnitTypes.SVG_UNIT_TYPE_USERSPACEONUSE);
  assert_equals(maskElement.getAttribute('maskUnits'), "userSpaceOnUse");

  // maskContentUnits
  // Check initial 'maskContentUnits' value.
  assert_true(maskElement.maskContentUnits instanceof SVGAnimatedEnumeration);
  assert_equals(typeof(maskElement.maskContentUnits.baseVal), "number");
  assert_equals(maskElement.maskContentUnits.baseVal, SVGUnitTypes.SVG_UNIT_TYPE_USERSPACEONUSE);

  // Switch to 'objectBoundingBox'.
  maskElement.maskContentUnits.baseVal = SVGUnitTypes.SVG_UNIT_TYPE_OBJECTBOUNDINGBOX;
  assert_equals(maskElement.maskContentUnits.baseVal, SVGUnitTypes.SVG_UNIT_TYPE_OBJECTBOUNDINGBOX);
  assert_equals(maskElement.getAttribute('maskContentUnits'), "objectBoundingBox");

  // Try setting invalid values.
  assert_throws_js(TypeError, function() { maskElement.maskContentUnits.baseVal = 3; });
  assert_equals(maskElement.maskContentUnits.baseVal, SVGUnitTypes.SVG_UNIT_TYPE_OBJECTBOUNDINGBOX);
  assert_equals(maskElement.getAttribute('maskContentUnits'), "objectBoundingBox");

  assert_throws_js(TypeError, function() { maskElement.maskContentUnits.baseVal = -1; });
  assert_equals(maskElement.maskContentUnits.baseVal, SVGUnitTypes.SVG_UNIT_TYPE_OBJECTBOUNDINGBOX);
  assert_equals(maskElement.getAttribute('maskContentUnits'), "objectBoundingBox");

  assert_throws_js(TypeError, function() { maskElement.maskContentUnits.baseVal = 0; });
  assert_equals(maskElement.maskContentUnits.baseVal, SVGUnitTypes.SVG_UNIT_TYPE_OBJECTBOUNDINGBOX);
  assert_equals(maskElement.getAttribute('maskContentUnits'), "objectBoundingBox");

  // Switch to 'userSpaceOnUse'.
  maskElement.maskContentUnits.baseVal = SVGUnitTypes.SVG_UNIT_TYPE_USERSPACEONUSE;
  assert_equals(maskElement.maskContentUnits.baseVal, SVGUnitTypes.SVG_UNIT_TYPE_USERSPACEONUSE);
  assert_equals(maskElement.getAttribute('maskContentUnits'), "userSpaceOnUse");
});
</script>