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| 1 | +<!DOCTYPE html> |
| 2 | +<head> |
| 3 | + <title>Shadow DOM: Element.attachShadow with ShadowRoot</title> |
| 4 | + <meta name="author" title="Jesse Jurman" href="mailto:j.r.jurman@gmail.com"> |
| 5 | + <meta name="assert" content="It should be possible to use an existing ShadowRoot as input for Element.attachShadow"> |
| 6 | + <link rel=help href="https://bugs.webkit.org/show_bug.cgi?id=295174"> |
| 7 | + |
| 8 | + <script src="../resources/testharness.js"></script> |
| 9 | + <script src="../resources/testharnessreport.js"></script> |
| 10 | + <script src="../resources/testdriver.js"></script> |
| 11 | + <script src="../resources/testdriver-actions.js"></script> |
| 12 | + <script src="../resources/testdriver-vendor.js"></script> |
| 13 | +</head> |
| 14 | + |
| 15 | + |
| 16 | +<body> |
| 17 | + <div id="elementSource"> |
| 18 | + <span> |
| 19 | + <template shadowrootmode="open"></template> |
| 20 | + </span> |
| 21 | + </div> |
| 22 | + |
| 23 | + <div id="elementTarget"></div> |
| 24 | + |
| 25 | + <template id="templateSource"> |
| 26 | + <span> |
| 27 | + <template shadowrootmode="open"></template> |
| 28 | + </span> |
| 29 | + </template> |
| 30 | + |
| 31 | + <div id="templateTarget"></div> |
| 32 | +</body> |
| 33 | + |
| 34 | +<script> |
| 35 | +'use strict'; |
| 36 | + |
| 37 | +// test that we can use a ShadowRoot as an input for attachShadow |
| 38 | +promise_test(async () => { |
| 39 | + const shadowRoot = elementSource.children[0].shadowRoot; |
| 40 | + |
| 41 | + // validate that the ShadowRoot is an object, and has properties we expect (like "mode") |
| 42 | + assert_equals(typeof shadowRoot, 'object'); |
| 43 | + assert_equals(shadowRoot.mode, 'open'); |
| 44 | + |
| 45 | + // attach the shadowRoot to our target element |
| 46 | + elementTarget.attachShadow(shadowRoot); |
| 47 | + |
| 48 | + // validate that our target element has a shadowRoot with the same options |
| 49 | + assert_equals(typeof elementTarget.shadowRoot, 'object'); |
| 50 | + assert_equals(elementTarget.shadowRoot.mode, 'open'); |
| 51 | +}, 'can use ShadowRoot as options for attachShadow'); |
| 52 | + |
| 53 | +// test that we can use a ShadowRoot in a template element as an input for attachShadow |
| 54 | +promise_test(async () => { |
| 55 | + const shadowRoot = templateSource.content.children[0].shadowRoot; |
| 56 | + |
| 57 | + // validate that the ShadowRoot is an object, and has properties we expect (like "mode") |
| 58 | + assert_equals(typeof shadowRoot, 'object'); |
| 59 | + assert_equals(shadowRoot.mode, 'open'); |
| 60 | + |
| 61 | + // attach the shadowRoot to our target element |
| 62 | + templateTarget.attachShadow(shadowRoot); |
| 63 | + |
| 64 | + // validate that our target element has a shadowRoot with the same options |
| 65 | + assert_equals(typeof templateTarget.shadowRoot, 'object'); |
| 66 | + assert_equals(templateTarget.shadowRoot.mode, 'open'); |
| 67 | +}, 'can use ShadowRoot in document fragment as options for attachShadow'); |
| 68 | + |
| 69 | +</script> |
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