canvas-clearRect.html | Explore in Territory

<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<body>
<script>
test(function(t) {
    var ctx = document.createElement('canvas').getContext('2d');
    
    // Clear rect with height = width = 0.   
    ctx.fillStyle = 'red';
    ctx.fillRect(0, 0, 1, 1);
    ctx.clearRect(0, 0, 0, 0);
    
    var imageData = ctx.getImageData(0, 0, 1, 1);
    var imgdata = imageData.data;
    assert_equals(imgdata[0], 255);
    assert_equals(imgdata[1], 0);
    assert_equals(imgdata[2], 0);
    
    ctx.clearRect(0, 0, 1, 1);
    
    // Clear rect with height = 0, width = 1.
    ctx.fillStyle = 'red';
    ctx.fillRect(0, 0, 1, 1);
    ctx.clearRect(0, 0, 1, 0);
    
    var imageData = ctx.getImageData(0, 0, 1, 1);
    var imgdata = imageData.data;
    assert_equals(imgdata[0], 255);
    assert_equals(imgdata[1], 0);
    assert_equals(imgdata[2], 0);
    
    ctx.clearRect(0, 0, 1, 1);
    
    // Clear rect with height = 1, width = 0.
    ctx.fillStyle = 'red';
    ctx.fillRect(0, 0, 1, 1);
    ctx.clearRect(0, 0, 0, 1);
    
    var imageData = ctx.getImageData(0, 0, 1, 1);
    var imgdata = imageData.data;
    assert_equals(imgdata[0], 255);
    assert_equals(imgdata[1], 0);
    assert_equals(imgdata[2], 0);
    
}, "Series of tests to ensure correct behavior of canvas.clearRect().");
</script>
</body>
chromium/third_party/blink/web_tests/fast/canvas/canvas-clearRect.html
