assert_equals(Element node <div></div>, Element node <div></div>, "same target")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:19:3)

assert_equals(4, 4, "same keyframes length")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:34:3)

assert_equals(null, null, "Keyframe 0 has the same offset")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:37:5)

assert_equals(0, 0, "Keyframe 0 has the same computedOffset")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:39:5)

assert_equals("linear", "linear", "Keyframe 0 has the same easing")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:41:5)

assert_equals("auto", "auto", "Keyframe 0 has the same composite")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:43:5)

assert_true(true, "Original keyframe 0 has a valid property value")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:46:5)

assert_true(true, "New keyframe 0 has a valid property value")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:48:5)

assert_equals("0px", "0px", "Keyframe 0 has the same property value pair")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:50:5)

assert_equals(0.1, 0.1, "Keyframe 1 has the same offset")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:37:5)

assert_equals(0.1, 0.1, "Keyframe 1 has the same computedOffset")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:39:5)

assert_equals("ease-in", "ease-in", "Keyframe 1 has the same easing")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:41:5)

assert_equals("auto", "auto", "Keyframe 1 has the same composite")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:43:5)

assert_true(true, "Original keyframe 1 has a valid property value")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:46:5)

assert_true(true, "New keyframe 1 has a valid property value")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:48:5)

assert_equals("-20px", "-20px", "Keyframe 1 has the same property value pair")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:50:5)

assert_equals(null, null, "Keyframe 2 has the same offset")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:37:5)

assert_equals(0.55, 0.55, "Keyframe 2 has the same computedOffset")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:39:5)

assert_equals("ease-out", "ease-out", "Keyframe 2 has the same easing")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:41:5)

assert_equals("auto", "auto", "Keyframe 2 has the same composite")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:43:5)

assert_true(true, "Original keyframe 2 has a valid property value")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:46:5)

assert_true(true, "New keyframe 2 has a valid property value")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:48:5)

assert_equals("100px", "100px", "Keyframe 2 has the same property value pair")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:50:5)

assert_equals(null, null, "Keyframe 3 has the same offset")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:37:5)

assert_equals(1, 1, "Keyframe 3 has the same computedOffset")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:39:5)

assert_equals("linear", "linear", "Keyframe 3 has the same easing")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:41:5)

assert_equals("auto", "auto", "Keyframe 3 has the same composite")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:43:5)

assert_true(true, "Original keyframe 3 has a valid property value")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:46:5)

assert_true(true, "New keyframe 3 has a valid property value")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:48:5)

assert_equals("50px", "50px", "Keyframe 3 has the same property value pair")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:50:5)

assert_equals(undefined, undefined, "same iterationCompositeOperation")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:60:3)

assert_equals("replace", "replace", "same compositeOperation")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:62:3)

assert_not_equals(object "[object Object]", object "[object Object]", "different timing objects")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:80:3)

assert_equals(-1000, -1000, "same delay")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:81:3)

assert_equals(2000, 2000, "same endDelay")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:82:3)

assert_equals("forwards", "forwards", "same fill")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:83:3)

assert_equals(2, 2, "same iterationStart")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:84:3)

assert_equals(20, 20, "same iterations")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:86:3)

assert_equals(100000, 100000, "same duration")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:87:3)

assert_equals("alternate", "alternate", "same direction")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:88:3)

assert_equals("ease-out", "ease-out", "same easing")
    at Test.<anonymous> ( /web-animations/interfaces/KeyframeEffect/copy-constructor.html:89:3)