Migrate all LayoutTests/dart/dom to main repo.

client/tests/client/dom/CanvasTest.dart

Index: client/tests/client/dom/CanvasTest.dart
diff --git a/client/tests/client/dom/CanvasTest.dart b/client/tests/client/dom/CanvasTest.dart
new file mode 100644
index 0000000000000000000000000000000000000000..669d062d4552629775dd8418ceb4bcb78cb46bc6
--- /dev/null
+++ b/client/tests/client/dom/CanvasTest.dart
@@ -0,0 +1,84 @@
+#library('CanvasTest');
+#import('../../../testing/unittest/unittest.dart');
+#import('dart:dom');
+
+main() {
+  HTMLCanvasElement canvas;
+  CanvasRenderingContext2D context;
+  int width = 100;
+  int height = 100;
+
+  // FIXME: once main is run on content loaded, this hack won't be necessary.
+  window.setTimeout(() {
+    canvas = document.createElement('canvas');
+    canvas.setAttribute('width', '$width');
+    canvas.setAttribute('height', '$height');
+    document.body.appendChild(canvas);
+
+    context = canvas.getContext('2d');
+  }, 0);
+
+  forLayoutTests();
+  test('FillStyle', () {
+    context.fillStyle = "red";
+    context.fillRect(10, 10, 20, 20);
+
+    CanvasPixelArray data = context.getImageData(0, 0, width, height).data;
+    checkPixel(data, 0, [0, 0, 0, 0]);
+    checkPixel(data, 9 + width * 10, [0, 0, 0, 0]);
+    checkPixel(data, 10 + width * 10, [255, 0, 0, 255]);
+    checkPixel(data, 29 + width * 10, [255, 0, 0, 255]);
+    checkPixel(data, 30 + width * 10, [0, 0, 0, 0]);
+  });
+  test('SetFillColor', () {
+    // With floats.
+    context.setFillColor(10, 10, 10, 10);
+    context.fillRect(10, 10, 20, 20);
+
+    // With rationals.
+    context.setFillColor(10.0, 10.0, 10.0, 10.0);
+    context.fillRect(20, 20, 30, 30);
+
+    // With ints.
+    context.setFillColor(10, 10, 10, 10);
+    context.fillRect(30, 30, 40, 40);
+
+    // TODO(vsm): Verify the result once we have the ability to read pixels.
+  });
+  test('StrokeStyle', () {
+    context.strokeStyle = "blue";
+    context.strokeRect(30, 30, 10, 20);
+
+    // TODO(vsm): Verify the result once we have the ability to read pixels.
+  });
+  test('CreateImageData', () {
+    ImageData image = context.createImageData(canvas.width,
+                                              canvas.height);
+    CanvasPixelArray data = image.data;
+
+    Expect.equals(40000, data.length);
+    checkPixel(data, 0, [0, 0, 0, 0]);
+    checkPixel(data, width * height - 1, [0, 0, 0, 0]);
+
+    data[100] = 200;
+    Expect.equals(200, data[100]);
+  });
+  test('PutImageData', () {
+    ImageData data = context.getImageData(0, 0, width, height);
+    data.data[0] = 25;
+    data.data[3] = 255;
+    context.putImageData(data, 0, 0);
+
+    data = context.getImageData(0, 0, width, height);
+    Expect.equals(25, data.data[0]);
+    Expect.equals(255, data.data[3]);
+  });
+}
+
+void checkPixel(CanvasPixelArray data, int offset, List<int> rgba)
+{
+  offset *= 4;
+  for (var i = 0; i < 4; ++i) {
+    Expect.equals(rgba[i], data[offset + i]);
+  }
+}