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Add test for scroll offsets with fractional zoom
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|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| <!DOCTYPE html> | ||
| <meta charset="utf-8"> | ||
| <link rel="author" title="Manuel Rego Casasnovas" href="mailto:[email protected]"> | ||
| <link rel="help" href="https://drafts.csswg.org/cssom-view/#extension-to-the-element-interface"> | ||
| <meta name="assert" content="This test checks that the scroll offsets behave as expected on fractional zoom situations."> | ||
| <script src="/resources/testharness.js"></script> | ||
| <script src="/resources/testharnessreport.js"></script> | ||
| <style> | ||
| .scrollable-area { | ||
| width: 100px; | ||
| height: 100px; | ||
| overflow: scroll; | ||
| } | ||
| .content { | ||
| width: 500px; | ||
| height: 500px; | ||
| background: lightgrey; | ||
| } | ||
| </style> | ||
| <div id="target" class="scrollable-area"> | ||
| <div class="content"></div> | ||
| </div> | ||
| <script> | ||
| function runTest(zoom, x, y) { | ||
| target.scrollTo(x, y); | ||
| test(() => { | ||
| assert_equals(target.scrollLeft, x, `scrollLeft should be ${x}`); | ||
| }, `scrollLeft after scrollTo(${x}, ${y}) with 'zoom: ${zoom}'`); | ||
| test(() => { | ||
| assert_equals(target.scrollTop, y, `scrollTop should be ${y}`); | ||
| }, `scrollTop after scrollTo(${x}, ${y}) with 'zoom: ${zoom}'`); | ||
| } | ||
|
|
||
| function runTests(zoom) { | ||
| target.style.zoom = zoom; | ||
|
|
||
| runTest(zoom, 0, 0); | ||
| runTest(zoom, 1, 2); | ||
| runTest(zoom, 13, 61); | ||
| runTest(zoom, 75, 100); | ||
| } | ||
|
|
||
| runTests(0.75); | ||
| runTests(0.9); | ||
| runTests(1); | ||
| runTests(1.13); | ||
| runTests(1.25); | ||
| runTests(1.5); | ||
| runTests(1.9); | ||
| runTests(2); | ||
| runTests(3.33); | ||
| </script> |