sousa-gecko/testing/web-platform/tests/css/css-cascade/revert-rule-revert-layer.html

<!DOCTYPE html>
<title>The revert-rule keyword: interaction with revert-layer</title>
<link rel="help" href="https://drafts.csswg.org/css-cascade-5/#revert-rule-keyword">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>

<style>
  @layer {
    #test1 {
      color: green;
    }
  }
  @layer {
    #test1 {
      color: red;
    }
    #test1 {
      color: revert-layer;
    }
  }
  @layer {
    #test1 {
      color: revert-rule;
      background-color: green;
    }
  }
</style>
<div id=test1></div>
<script>
  test(() => {
    assert_true(CSS.supports('color:revert-rule'));
    assert_equals(getComputedStyle(test1).color, 'rgb(0, 128, 0)')
    assert_equals(getComputedStyle(test1).backgroundColor, 'rgb(0, 128, 0)')
  }, 'Combination of revert-rule and revert-layer');
</script>

<style>
  @layer {
    #test2 {
      color: green;
    }
  }
  @layer {
    #test2 {
      color: revert-rule;
      background-color: green;
    }
  }
  @layer {
    #test2 {
      color: red;
    }
    #test2 {
      color: revert-layer;
      background-color: revert-rule;
    }
  }
</style>
<div id=test2></div>
<script>
  test(() => {
    assert_true(CSS.supports('color:revert-rule'));
    assert_equals(getComputedStyle(test2).color, 'rgb(0, 128, 0)')
    assert_equals(getComputedStyle(test2).backgroundColor, 'rgb(0, 128, 0)')
  }, 'Combination of revert-layer and revert-rule');
</script>

<style>
  @layer {
    #test3 {
      color: green;
    }
  }
  @layer {
    #test3 {
      color: red;
    }
    #test3 {
      color: revert-layer;
    }
  }
  @layer {
    #test3 {
      color: revert-rule;
      background-color: green;
    }
  }
  @layer {
    #test3 {
      color: revert-rule;
      background-color: revert-rule;
    }
  }
</style>
<div id=test3></div>
<script>
  test(() => {
    assert_true(CSS.supports('color:revert-rule'));
    assert_equals(getComputedStyle(test3).color, 'rgb(0, 128, 0)')
    assert_equals(getComputedStyle(test3).backgroundColor, 'rgb(0, 128, 0)')
  }, 'Combination revert-rule/revert-rule/revert-layer');
</script>

<style>
  @layer {
    #test4 {
      color: green;
    }
  }
  @layer {
    #test4 {
      color: red;
    }
    #test4 {
      color: revert-layer;
    }
  }
  @layer {
    #test4 {
      color: revert-rule;
      background-color: green;
    }
  }
  @layer {
    #test4 {
        color: red;
        color: revert-layer;
        background-color: revert-rule;
    }
  }
</style>
<div id=test4></div>
<script>
  test(() => {
    assert_true(CSS.supports('color:revert-rule'));
    assert_equals(getComputedStyle(test4).color, 'rgb(0, 128, 0)')
    assert_equals(getComputedStyle(test4).backgroundColor, 'rgb(0, 128, 0)')
  }, 'Combination revert-layer/revert-rule/revert-layer');
</script>

<style>
  @layer {
    #test5 {
      color: green;
    }
  }
  @layer {
    #test5 {
      color: revert-rule;
      background-color: green;
    }
  }
  @layer {
    #test5 {
      color: red;
    }
    #test5 {
      color: revert-layer;
    }
  }
  @layer {
    #test5 {
      color: revert-rule;
      background-color: revert-rule;
    }
  }
</style>
<div id=test5></div>
<script>
  test(() => {
    assert_true(CSS.supports('color:revert-rule'));
    assert_equals(getComputedStyle(test5).color, 'rgb(0, 128, 0)')
    assert_equals(getComputedStyle(test5).backgroundColor, 'rgb(0, 128, 0)')
  }, 'Combination revert-rule/revert-layer/revert-rule');
</script>