| <!doctype html> |
| <meta charset=utf-8> |
| <title>Canvas test: toBlob.null</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/common/canvas-tests.js"></script> |
| <link rel="stylesheet" href="/common/canvas-tests.css"> |
| <body class="show_output"> |
| |
| <h1>toBlob.null</h1> |
| <p class="desc">toBlob with zero dimension returns a null Blob</p> |
| |
| <p class="output">Actual output:</p> |
| <canvas id="c" class="output" width="100" height="0"><p class="fallback">FAIL (fallback content)</p></canvas> |
| |
| <ul id="d"></ul> |
| <script> |
| async_test(function() { |
| on_event(window, "load", this.step_func(function() { |
| var toBlobCalled = false; |
| c.toBlob(this.step_func(function(blob) { |
| toBlobCalled = true; |
| _assertSame(blob, null, "blob", "null"); |
| c.width = 0; |
| c.height = 100; |
| c.toBlob(this.step_func_done(function(blob) { |
| _assertSame(blob, null, "blob", "null"); |
| }), 'image/jpeg'); |
| }), 'image/jpeg'); |
| assert_false(toBlobCalled, "toBlob callback shouldn't be called synchronously"); |
| })); |
| }, "toBlob with zero dimension returns a null Blob"); |
| </script> |
