mirror of
https://github.com/classilla/tenfourfox.git
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148 lines
5.3 KiB
HTML
148 lines
5.3 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<!--
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https://bugzilla.mozilla.org/show_bug.cgi?id=982141
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-->
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="user-scalable=no">
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<title>Test for Bug 982141, helper page</title>
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<script type="application/javascript" src="apz_test_utils.js"></script>
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<script type="application/javascript">
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// -------------------------------------------------------------------
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// Infrastructure to get the test assertions to run at the right time.
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// -------------------------------------------------------------------
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var SimpleTest = window.opener.SimpleTest;
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window.onload = function() {
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window.addEventListener("MozAfterPaint", afterPaint, false);
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};
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var utils = SpecialPowers.getDOMWindowUtils(window);
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function afterPaint(e) {
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// If there is another paint pending, wait for it.
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if (utils.isMozAfterPaintPending) {
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return;
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}
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// Once there are no more paints pending, remove the
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// MozAfterPaint listener and run the test logic.
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window.removeEventListener("MozAfterPaint", afterPaint, false);
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testBug982141();
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}
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// --------------------------------------------------------------------
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// The actual logic for testing bug 982141.
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//
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// In this test we have a simple page with a scrollable <div> which has
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// enough content to make it scrollable. We test that this <div> got
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// a displayport.
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// --------------------------------------------------------------------
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function testBug982141() {
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// Get the content- and compositor-side test data from nsIDOMWindowUtils.
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var contentTestData = utils.getContentAPZTestData();
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var compositorTestData = utils.getCompositorAPZTestData();
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// Get the sequence number of the last paint on the compositor side.
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// We do this before converting the APZ test data because the conversion
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// loses the order of the paints.
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SimpleTest.ok(compositorTestData.paints.length > 0,
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"expected at least one paint in compositor test data");
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var lastCompositorPaint = compositorTestData.paints[compositorTestData.paints.length - 1];
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var lastCompositorPaintSeqNo = lastCompositorPaint.sequenceNumber;
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// Convert the test data into a representation that's easier to navigate.
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contentTestData = convertTestData(contentTestData);
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compositorTestData = convertTestData(compositorTestData);
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// Reconstruct the APZC tree structure in the last paint.
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var apzcTree = buildApzcTree(compositorTestData.paints[lastCompositorPaintSeqNo]);
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// The apzc tree for this page should consist of a single root APZC
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// and a child APZC for the scrollable <div>.
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SimpleTest.is(apzcTree.children.length, 1, "expected a single root APZC");
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var rootApzc = apzcTree.children[0];
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SimpleTest.is(rootApzc.children.length, 1, "expected a single child APZC");
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var childScrollId = rootApzc.children[0].scrollId;
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// We should have content-side data for the same paint.
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SimpleTest.ok(lastCompositorPaintSeqNo in contentTestData.paints,
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"expected a content paint with sequence number" + lastCompositorPaintSeqNo);
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var correspondingContentPaint = contentTestData.paints[lastCompositorPaintSeqNo];
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// This content-side data should have a displayport for our scrollable <div>.
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SimpleTest.ok(childScrollId in correspondingContentPaint,
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"expected scroll frame data for scroll id " + childScrollId);
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SimpleTest.ok("displayport" in correspondingContentPaint[childScrollId],
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"expected a displayport for scroll id " + childScrollId);
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var childDisplayport = correspondingContentPaint[childScrollId]["displayport"];
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var dpFields = childDisplayport.replace(/[()\s]+/g, '').split(',');
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SimpleTest.is(dpFields.length, 4, "expected displayport string of form (x,y,w,h)");
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var dpWidth = dpFields[2];
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var dpHeight = dpFields[3];
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SimpleTest.ok(dpWidth >= 50 && dpHeight >= 50,
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"expected a displayport at least as large as the scrollable element");
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window.opener.finishTest();
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}
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</script>
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</head>
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<body style="overflow: hidden;"><!-- This combined with the user-scalable=no ensures the root frame is not scrollable -->
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<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=982141">Mozilla Bug 982141</a>
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<!-- A scrollable subframe, with enough content to make it have a nonzero scroll range -->
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<div style="height: 50px; width: 50px; overflow: scroll">
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</div>
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</body>
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</html>
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