edit-context-textformat.tentative.html

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This test has a WPT meta file that expects 2 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /editing/edit-context/edit-context-textformat.tentative.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html>

<head>

<title>EditContext: The TextFormat property</title>

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

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

</head>

<body>

<script>

  test(function() {

    const textFormat = new TextFormat();

    assert_equals(textFormat.rangeStart, 0);

    assert_equals(textFormat.rangeEnd, 0);

    assert_equals(textFormat.underlineStyle, "none");

    assert_equals(textFormat.underlineThickness, "none");

  }, 'Test default values of TextFormat attributes');

  test(function(){

    const validUnderlineStyles = ["none", "solid", "dotted", "dashed", "wavy"];

    const validUnderlineThicknesses = ["none", "thin", "thick"];

    // Invalid value should throw type error.

    assert_throws_js(TypeError, function() {

      const textFormat = new TextFormat({underlineStyle: "Solid"});

    }, 'TextFormat must throw a TypeError when underlineStyle is set to an invalid value');

    assert_throws_js(TypeError, function() {

      const textFormat = new TextFormat({underlineThickness: "Thick"});

    }, 'TextFormat must throw a TypeError when underlineThickness is set to an invalid value');

    // Verify valid values.

    for (const style of validUnderlineStyles) {

      const textFormat = new TextFormat({underlineStyle: style});

      assert_equals(textFormat.underlineStyle, style, `underlineStyle should accept "${style}"`);

      assert_equals(textFormat.underlineThickness, "none", 'default value of underlineThickness should be "none"');

    for (const thickness of validUnderlineThicknesses) {

      const textFormat = new TextFormat({underlineThickness: thickness});

      assert_equals(textFormat.underlineStyle, "none", 'default value of underlineStyle should be "none"');

      assert_equals(textFormat.underlineThickness, thickness, `underlineThickness should accept "${thickness}"`);

  }, 'Test valid values of TextFormat underlineStyle and underlineThickness');

</script>

</body>

</html>