The Tor Browser: dom/tests/mochitest/webcomponents/test_shadowroot

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 <!DOCTYPE HTML>

     2 <html>

     3 <!--

     4 https://bugzilla.mozilla.org/show_bug.cgi?id=806506

     5 -->

     6 <head>

     7   <title>Test for ShadowRoot styling</title>

     8   <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>

     9   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />

    10 </head>

    11 <body>

    12 <div class="tall" id="bodydiv"></div>

    13 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=806506">Bug 806506</a>

    14 <script>

    15 // Create ShadowRoot.

    16 var elem = document.createElement("div");

    17 var root = elem.createShadowRoot();

    19 // A style element that will be appended into the ShadowRoot.

    20 var shadowStyle = document.createElement("style");

    21 shadowStyle.innerHTML = ".tall { height: 100px; } .fat { padding-left: inherit; }";

    23 root.innerHTML = '<div id="divtostyle" class="tall fat"></div>';

    24 var divToStyle = root.getElementById("divtostyle");

    26 // Make sure styleSheet counts are correct after appending a style to the ShadowRoot.

    27 is(document.styleSheets.length, 1, "There should only be one style sheet on the document from the test style sheet.");

    28 is(root.styleSheets.length, 0, "The ShadowRoot should have no style sheets.");

    29 root.appendChild(shadowStyle);

    30 is(document.styleSheets.length, 1, "Styles in the ShadowRoot element should not be accessible from the document.");

    31 is(root.styleSheets.length, 1, "ShadowRoot should have one style sheet from the appened style.");

    32 is(root.styleSheets[0].ownerNode, shadowStyle, "First style in ShadowRoot should match the style that was just appended.");

    34 var dummyStyle = document.createElement("style");

    35 root.appendChild(dummyStyle);

    36 is(root.styleSheets.length, 2, "ShadowRoot should have an additional style from appending dummyStyle.");

    37 is(root.styleSheets[1].ownerNode, dummyStyle, "Second style in ShadowRoot should be the dummyStyle.");

    38 root.removeChild(dummyStyle);

    39 is(root.styleSheets.length, 1, "Removing dummyStyle should remove it from the ShadowRoot style sheets.");

    40 is(root.styleSheets[0].ownerNode, shadowStyle, "The style sheet remaining in the ShadowRoot should be shadowStyle.");

    42 // Make sure that elements outside of the ShadowRoot are not affected by the ShadowRoot style.

    43 isnot(getComputedStyle(document.getElementById("bodydiv"), null).getPropertyValue("height"), "100px", "Style sheets in ShadowRoot should not apply to elements no in the ShadowRoot.");

    45 // Make sure that elements in the ShadowRoot are styled according to the ShadowRoot style.

    46 is(getComputedStyle(divToStyle, null).getPropertyValue("height"), "100px", "ShadowRoot style sheets should apply to elements in ShadowRoot.");

    48 // Tests for applyAuthorStyles.

    49 var authorStyle = document.createElement("style");

    50 authorStyle.innerHTML = ".fat { padding-right: 20px; padding-left: 30px; }";

    51 document.body.appendChild(authorStyle);

    53 is(root.applyAuthorStyles, false, "applyAuthorStyles defaults to false.");

    54 isnot(getComputedStyle(divToStyle, null).getPropertyValue("padding-right"), "20px", "Author styles should not apply to ShadowRoot when ShadowRoot.applyAuthorStyles is false.");

    55 root.applyAuthorStyles = true;

    56 is(root.applyAuthorStyles, true, "applyAuthorStyles was set to true.");

    57 is(getComputedStyle(divToStyle, null).getPropertyValue("padding-right"), "20px", "Author styles should apply to ShadowRoot when ShadowRoot.applyAuthorStyles is true.");

    58 root.applyAuthorStyles = false;

    59 is(root.applyAuthorStyles, false, "applyAuthorStyles was set to false.");

    60 isnot(getComputedStyle(divToStyle, null).getPropertyValue("padding-right"), "20px", "Author styles should not apply to ShadowRoot when ShadowRoot.applyAuthorStyles is false.");

    62 // Test dynamic changes to style in ShadowRoot.

    63 root.innerHTML = '<div id="divtostyle" class="dummy"></div>';

    64 divToStyle = root.getElementById("divtostyle");

    65 var dummyShadowStyle = document.createElement("style");

    66 dummyShadowStyle.innerHTML = ".dummy { height: 300px; }";

    67 root.appendChild(dummyShadowStyle);

    68 is(getComputedStyle(divToStyle, null).getPropertyValue("height"), "300px", "Dummy element in ShadowRoot should be styled by style in ShadowRoot.");

    69 dummyShadowStyle.innerHTML = ".dummy { height: 200px; }";

    70 is(getComputedStyle(divToStyle, null).getPropertyValue("height"), "200px", "Dynamic changes to styles in ShadowRoot should change style of affected elements.");

    72 // Test id selector in ShadowRoot style.

    73 root.innerHTML = '<style>#divtostyle { padding-top: 10px; }</style><div id="divtostyle"></div>';

    74 divToStyle = root.getElementById("divtostyle");

    75 is(getComputedStyle(divToStyle, null).getPropertyValue("padding-top"), "10px", "ID selector in style selector should match element.");

    77 </script>

    78 </body>

    79 </html>

The Tor Browser / file revision

dom/tests/mochitest/webcomponents/test_shadowroot_style.html@b8a032363ba2

dom/tests/mochitest/webcomponents/test_shadowroot_style.html