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<title>Animation.frameRate</title>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script src="../../imported/w3c/web-platform-tests/web-animations/testcommon.js"></script>
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<script>
'use strict';

const presets = ["low", "high", "highest", "auto"];
const invalidValues = ["default", "120", null, [], {}];

test(t => {
    const animation = new Animation;

    assert_equals(animation.frameRate, "auto", "The default value for frameRate is 'auto'");

    // AnimationFrameRatePreset values.
    for (let value of presets) {
        animation.frameRate = value;
        assert_equals(animation.frameRate, value, `The value "${value}" can be set`);
    }

    // Numeric value.
    animation.frameRate = 60;
    assert_equals(animation.frameRate, 60, `A numeric value can be set`);
}, "Valid animation.frameRate values");

test(t => {
    const animation = new Animation;
    for (let value of invalidValues.concat(undefined)) {
        assert_throws_js(TypeError, () => animation.frameRate = value, `Setting the value ${value} throws`);
        assert_equals(animation.frameRate, "auto", `Setting the invalid value "${value}" does not change the value`);
    }
}, "Invalid animation.frameRate values");

test(t => {
    const target = document.createElement("div");
    const animation = frameRate => target.animate(null, { frameRate });

    // Numeric value.
    assert_equals(animation(30).frameRate, 30, "frameRate can be set to a numeric value");

    // Presets.
    for (let value of presets)
        assert_equals(animation(value).frameRate, value, "frameRate can be set to a preset value");

    // Invalid values.
    for (let value of invalidValues)
        assert_throws_js(TypeError, () => animation(value), `providing the invalid value "${value}" throws`);
}, "Calling element.animate() allows setting animation.frameRate");

test(t => {
    const animation = frameRate => document.timeline.animate(() => { }, { frameRate });

    // Numeric value.
    assert_equals(animation(30).frameRate, 30, "frameRate can be set to a numeric value");

    // Presets.
    for (let value of presets)
        assert_equals(animation(value).frameRate, value, "frameRate can be set to a preset value");

    // Invalid values.
    for (let value of invalidValues)
        assert_throws_js(TypeError, () => animation(value), `providing the invalid value "${value}" throws`);
}, "Calling document.timeline.animate() allows setting animation.frameRate");

</script>
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