Import wpt@3c8896ae408c8fd594979da7c99970029e7856a7

third_party/WebKit/LayoutTests/imported/wpt/offscreen-canvas/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.worker.js

+// DO NOT EDIT! This test has been generated by tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.drawImage.zerosource.image
+// Description:drawImage with zero-sized source rectangle from image throws INDEX_SIZE_ERR
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/common/canvas-tests.js");
+
+var t = async_test("drawImage with zero-sized source rectangle from image throws INDEX_SIZE_ERR");
+t.step(function() {
+
+var offscreenCanvas = new OffscreenCanvas(100, 50);
+var ctx = offscreenCanvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/red-zerowidth.svg');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    assert_throws("INDEX_SIZE_ERR", function() { ctx.drawImage(response, 0, 0, 100, 50); });
+    assert_throws("INDEX_SIZE_ERR", function() { ctx.drawImage(response, 0, 0, 100, 50); });
+    assert_throws("INDEX_SIZE_ERR", function() { ctx.drawImage(response, 0, 0, 100, 50); });
+    _assertPixel(offscreenCanvas, 50,25, 0,255,0,255, "50,25", "0,255,0,255");
+});
+
+t.done();
+
+});
+done();