| <!DOCTYPE html> |
| <script src="../../../resources/testharness.js"></script> |
| <script src="../../../resources/testharnessreport.js"></script> |
| <style> |
| #first_child:first-child, |
| #first_child:first-child #first_child_inner, |
| #last_child:last-child, |
| #last_child:last-child #last_child_inner, |
| #only_child:only-child, |
| #only_child:only-child #only_child_inner { |
| background-color: green |
| } |
| |
| span:first-child { |
| color: green; |
| } |
| </style> |
| <div> |
| <div id="first_child"> |
| <div></div> |
| <div></div> |
| <div id="first_child_inner"></div> |
| <div></div> |
| </div> |
| </div> |
| <div> |
| <div id="last_child"> |
| <div></div> |
| <div></div> |
| <div id="last_child_inner"></div> |
| <div></div> |
| </div> |
| </div> |
| <div> |
| <div id="only_child"> |
| <div></div> |
| <div></div> |
| <div id="only_child_inner"></div> |
| <div></div> |
| </div> |
| </div> |
| |
| <div> |
| <span></span> |
| XXX |
| <span id="after_text_node"></span> |
| </div> |
| |
| <script> |
| function backgroundIsGreen(element) { |
| assert_equals(getComputedStyle(element).backgroundColor, "rgb(0, 128, 0)"); |
| } |
| |
| function backgroundIsTransparent(element) { |
| assert_equals(getComputedStyle(element).backgroundColor, "rgba(0, 0, 0, 0)"); |
| } |
| |
| test(() => { |
| backgroundIsGreen(first_child); |
| backgroundIsGreen(first_child_inner); |
| backgroundIsGreen(last_child); |
| backgroundIsGreen(last_child_inner); |
| backgroundIsGreen(only_child); |
| backgroundIsGreen(only_child_inner); |
| }, "Check initial computed styles"); |
| |
| var div = document.createElement("div"); |
| |
| test(() => { |
| first_child.offsetTop; |
| first_child.parentNode.insertBefore(div, first_child); |
| if (window.internals) |
| assert_equals(internals.updateStyleAndReturnAffectedElementCount(), 3); |
| backgroundIsTransparent(first_child); |
| backgroundIsTransparent(first_child_inner); |
| }, "Insert element before first child."); |
| |
| test(() => { |
| first_child.offsetTop; |
| div.remove(); |
| if (window.internals) |
| assert_equals(internals.updateStyleAndReturnAffectedElementCount(), 2); |
| backgroundIsGreen(first_child); |
| backgroundIsGreen(first_child_inner); |
| }, "Remove first child."); |
| |
| test(() => { |
| last_child.offsetTop; |
| last_child.parentNode.insertBefore(div, null); |
| if (window.internals) |
| assert_equals(internals.updateStyleAndReturnAffectedElementCount(), 3); |
| backgroundIsTransparent(last_child); |
| backgroundIsTransparent(last_child_inner); |
| }, "Insert element before after last child."); |
| |
| test(() => { |
| last_child.offsetTop; |
| div.remove(); |
| if (window.internals) |
| assert_equals(internals.updateStyleAndReturnAffectedElementCount(), 2); |
| backgroundIsGreen(last_child); |
| backgroundIsGreen(last_child_inner); |
| }, "Remove last child."); |
| |
| test(() => { |
| only_child.offsetTop; |
| only_child.parentNode.insertBefore(div, only_child); |
| if (window.internals) |
| assert_equals(internals.updateStyleAndReturnAffectedElementCount(), 3); |
| backgroundIsTransparent(only_child); |
| backgroundIsTransparent(only_child_inner); |
| }, "Insert element before only child."); |
| |
| test(() => { |
| only_child.offsetTop; |
| div.remove(); |
| if (window.internals) |
| assert_equals(internals.updateStyleAndReturnAffectedElementCount(), 2); |
| backgroundIsGreen(only_child); |
| backgroundIsGreen(only_child_inner); |
| }, "Remove element before only child."); |
| |
| test(() => { |
| only_child.offsetTop; |
| only_child.parentNode.insertBefore(div, null); |
| if (window.internals) |
| assert_equals(internals.updateStyleAndReturnAffectedElementCount(), 3); |
| backgroundIsTransparent(only_child); |
| backgroundIsTransparent(only_child_inner); |
| }, "Insert element after only child."); |
| |
| test(() => { |
| only_child.offsetTop; |
| div.remove(); |
| if (window.internals) |
| assert_equals(internals.updateStyleAndReturnAffectedElementCount(), 2); |
| backgroundIsGreen(only_child); |
| backgroundIsGreen(only_child_inner); |
| }, "Remove element after only child."); |
| |
| test(() => { |
| first_child.offsetTop; |
| first_child.parentNode.insertBefore(div, null); |
| if (window.internals) |
| assert_equals(internals.updateStyleAndReturnAffectedElementCount(), 1); |
| div.remove(); |
| if (window.internals) |
| assert_equals(internals.updateStyleAndReturnAffectedElementCount(), 0); |
| }, "No first-child mutation."); |
| |
| test(() => { |
| last_child.offsetTop; |
| last_child.parentNode.insertBefore(div, last_child); |
| if (window.internals) |
| assert_equals(internals.updateStyleAndReturnAffectedElementCount(), 1); |
| div.remove(); |
| if (window.internals) |
| assert_equals(internals.updateStyleAndReturnAffectedElementCount(), 0); |
| }, "No last-child mutation."); |
| |
| test(() => { |
| document.body.offsetTop; |
| after_text_node.parentNode.insertBefore(div, after_text_node); |
| if (window.internals) |
| assert_equals(internals.updateStyleAndReturnAffectedElementCount(), 1); |
| }, "Inserting sibling before text-node should not update for :first-child if text-node has element predecessor."); |
| |
| </script> |
