2d-getcontext-options.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /html/semantics/embedded-content/the-canvas-element/2d-getcontext-options.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Options conversion for getContext("2d")</title>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script>

test(() => {

  const expected = [

    "alpha",

    "colorSpace",

    "colorSpace toString",

    "desynchronized",

    "willReadFrequently",

];

  var actual = [];

  const options = {

    get alpha() {

      actual.push("alpha");

      return true;

},

    get willReadFrequently() {

      actual.push("willReadFrequently");

      return false;

},

    get desynchronized() {

      actual.push("desynchronized");

      return false;

},

    get colorSpace() {

      actual.push("colorSpace");

      return {

        toString() {

          actual.push("colorSpace toString");

          return "srgb";

};

},

};

  const canvas = document.createElement("canvas");

  const context = canvas.getContext('2d', options);

  assert_not_equals(context, null, "context");

  assert_array_equals(actual, expected, "order of operations (creation)");

  actual = [];

  assert_equals(canvas.getContext('2d', options), context, "cached context");

  assert_array_equals(actual, expected, "order of operations (caching)");

});

</script>