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

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

  var textContentElement = document.createElementNS("http://www.w3.org/2000/svg", "text");
  textContentElement.setAttribute("lengthAdjust", "spacing");

  // Check initial 'lengthAdjust' value.
  assert_true(textContentElement.lengthAdjust instanceof SVGAnimatedEnumeration);
  assert_equals(typeof(textContentElement.lengthAdjust.baseVal), "number");
  assert_equals(textContentElement.lengthAdjust.baseVal, SVGTextContentElement.LENGTHADJUST_SPACING);

  // Switch to 'spacingAndGlyphs'.
  textContentElement.lengthAdjust.baseVal = SVGTextContentElement.LENGTHADJUST_SPACINGANDGLYPHS;
  assert_equals(textContentElement.lengthAdjust.baseVal, SVGTextContentElement.LENGTHADJUST_SPACINGANDGLYPHS);
  assert_equals(textContentElement.getAttribute('lengthAdjust'), "spacingAndGlyphs");

  // Try setting invalid values.
  assert_throws_js(TypeError, function() { textContentElement.lengthAdjust.baseVal = 3; });
  assert_equals(textContentElement.lengthAdjust.baseVal, SVGTextContentElement.LENGTHADJUST_SPACINGANDGLYPHS);
  assert_equals(textContentElement.getAttribute('lengthAdjust'), "spacingAndGlyphs");

  assert_throws_js(TypeError, function() { textContentElement.lengthAdjust.baseVal = -1; });
  assert_equals(textContentElement.lengthAdjust.baseVal, SVGTextContentElement.LENGTHADJUST_SPACINGANDGLYPHS);
  assert_equals(textContentElement.getAttribute('lengthAdjust'), "spacingAndGlyphs");

  assert_throws_js(TypeError, function() { textContentElement.lengthAdjust.baseVal = 0; });
  assert_equals(textContentElement.lengthAdjust.baseVal, SVGTextContentElement.LENGTHADJUST_SPACINGANDGLYPHS);
  assert_equals(textContentElement.getAttribute('lengthAdjust'), "spacingAndGlyphs");

  // Switch to 'spacing'.
  textContentElement.lengthAdjust.baseVal = SVGTextContentElement.LENGTHADJUST_SPACING;
  assert_equals(textContentElement.lengthAdjust.baseVal, SVGTextContentElement.LENGTHADJUST_SPACING);
  assert_equals(textContentElement.getAttribute('lengthAdjust'), "spacing");
});
</script>