Bug 1141979 - part18 - mochitest - cases while calling mapDataInto should throw; r=jrmuizel

MozReview-Commit-ID: 3QUJy5E907G

--HG--
extra : transplant_source : %F4%B37U%F6%BC%F8%16%10%A8%E2%DE%FD%E7%C7%96%1E%F7%5E%29

dom/canvas/test/imagebitmap_extensions.html

@@ -41,6 +41,7 @@ function runTests() {
     then(testDraw()).
     then(testExceptions).
     then(testColorConversions()).
+    then(function() { return testInvalidAccess([gVideo, gImage, gCanvas, gCtx, gImageData, gImageBitmap, gPNGBlob, gJPEGBlob]); } ).
     then(function() {window.parent.postMessage({"type": "finish"}, "*");}, function(ev) { failed(ev); window.parent.postMessage({"type": "finish"}, "*"); });
 }
 

dom/canvas/test/imagebitmap_extensions.js

@@ -88,6 +88,32 @@ function testExceptions() {
   ]);
 }
 
+function testInvalidAccess(sources) {
+
+  function callMapDataIntoWithImageBitmapCroppedOutSideOfTheSourceImage(source) {
+    return new Promise(function(resolve, reject) {
+      var p = createImageBitmap(source, -1, -1, 2, 2);
+      p.then(
+        function(bitmap) {
+          var format = bitmap.findOptimalFormat();
+          var length = bitmap.mappedDataLength(format);
+          var buffer = new ArrayBuffer(length);
+          bitmap.mapDataInto(format, buffer, 0).then(
+            function(layout) { resolve(); },
+            function(error) { reject(error); }
+          );
+        },
+        function() { resolve(); });
+    });
+  };
+
+  var testCases = sources.map( function(source) {
+    return promiseThrows(callMapDataIntoWithImageBitmapCroppedOutSideOfTheSourceImage(source),
+                         "[Exception] mapDataInto() should throw with transparent black."); });
+
+  return Promise.all(testCases);
+}
+
 function testColorConversions() {
   return Promise.all([// From RGBA32
                       testColorConversion("RGBA32", "RGBA32"),

dom/canvas/test/imagebitmap_extensions_on_worker.js

@@ -42,5 +42,6 @@ function runTests() {
                                          testCreateFromArrayBffer_randomTest("PNG", gPNGBlob, 0),
                                          testCreateFromArrayBffer_randomTest("JPEG", gJPEGBlob, 10) // JPEG loses information
                                         ]); }).
+  then(function() { return testInvalidAccess([gImageData, gImageBitmap, gPNGBlob, gJPEGBlob]); } ).
   then(function() {postMessage({"type": "finish"});}, function(ev) { failed(ev); postMessage({"type": "finish"}); });
 }