Add new ImageBitmapRenderingContext tests (#4167) Adding new tests based on this specification: https://html.spec.whatwg.org/multipage/scripting.html#the-imagebitmap-rendering-context
diff --git a/imagebitmap-renderingcontext/transferFromImageBitmap-detached.html b/imagebitmap-renderingcontext/transferFromImageBitmap-detached.html new file mode 100644 index 0000000..2c547ee --- /dev/null +++ b/imagebitmap-renderingcontext/transferFromImageBitmap-detached.html
@@ -0,0 +1,34 @@ +<!DOCTYPE html> +<meta charset="utf-8"> +<title>Canvas's ImageBitmapRenderingContext test</title> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<link rel="help" href="https://html.spec.whatwg.org/multipage/scripting.html#the-imagebitmap-rendering-context"> +<script> +var width = 10; +var height = 10; + +promise_test(function() { + function testException(image) { + var dstCanvas = document.createElement('canvas'); + dstCanvas.width = width; + dstCanvas.height = height; + var dstCtx = dstCanvas.getContext('bitmaprenderer'); + dstCtx.transferFromImageBitmap(image); + + // The image should be detached after transferFromImageBitmap. + assert_equals(image.width, 0); + assert_equals(image.height, 0); + assert_throws("InvalidStateError", function() { dstCtx.transferFromImageBitmap(image); }); + } + + var srcCanvas = document.createElement('canvas'); + srcCanvas.width = width; + srcCanvas.height = height; + var ctx = srcCanvas.getContext('2d'); + ctx.fillStyle = 'rgba(0, 255, 0, 0.5)'; + ctx.fillRect(0, 0, width, height); + createImageBitmap(srcCanvas).then(testException); +}, "Test transferFromImageBitmap(image) with a detached image should throw InvalidStateError"); + +</script> 