Use testharness.js instead of js-test.js in LayoutTests/fast/canvas tests.

third_party/WebKit/LayoutTests/fast/canvas/canvas-pattern-behaviour.html

-<script src="../../resources/js-test.js"></script>
-<script src="canvas-pattern-behaviour.js"></script>
+<script src="../../resources/testharness.js"></script>
+<script src="../../resources/testharnessreport.js"></script>
+<script>
+
+function pixelShouldBe(x, y, color) {
+    assert_array_equals(context.getImageData(x, y, 1, 1).data, color);
+}
+
+function createCanvasImage(width, height, color) {
+    var c = document.createElement("canvas");
+    c.width = width;
+    c.height = height;
+    var context = c.getContext("2d");
+    context.fillStyle = color;
+    context.fillRect(0, 0, width, height);
+    return c;
+}
+
+var green1x1 = createCanvasImage(1, 1, "green");
+var green100x50 = createCanvasImage(100, 50, "green");
+
+var canvas = document.createElement("canvas");
+canvas.width = 100;
+canvas.height = 50;
+var context = canvas.getContext("2d");
+context.fillStyle="red";
+context.fillRect(0, 0, 100, 50);
+
+test(function () {
+        var pattern = context.createPattern(green1x1, null);

[Justin Novosad, 2017/02/16 15:50:27]

inconsistent indentation

+        context.fillStyle = pattern;
+        context.fillRect(0, 0, 100, 50);
+        pixelShouldBe(1, 1, [0, 128, 0, 255]);
+        pixelShouldBe(98, 1, [0, 128, 0, 255]);
+        pixelShouldBe(1, 48, [0, 128, 0, 255]);
+        pixelShouldBe(98, 48, [0, 128, 0, 255]);
+ 
+        assert_throws(null, function() {context.createPattern(green1x1, 'null');});
+        assert_throws(null, function() {context.createPattern(green1x1, undefined);});
+        assert_throws(null, function() {context.createPattern(green1x1, 'undefined');});
+        assert_throws(null, function() {context.createPattern(green1x1, {toString:function(){ return null;}});});
+        assert_throws(null, function() {context.createPattern(null, '');});
+        assert_throws(null, function() {context.createPattern(undefined, '');});
+        assert_throws(null, function() {context.createPattern({}, '');});
+        assert_throws(null, function() {context.createPattern([], '');});
+
+        pattern = context.createPattern(green1x1, '');
+        context.fillStyle = pattern;
+        context.fillRect(0, 0, 100, 50);
+        pixelShouldBe(1, 1, [0, 128, 0, 255]);
+        pixelShouldBe(98, 1, [0, 128, 0, 255]);
+        pixelShouldBe(1, 48, [0, 128, 0, 255]);
+        pixelShouldBe(98, 48, [0, 128, 0, 255]);
+        
+        pattern = context.createPattern(green1x1, {toString:function(){ return 'repeat';}});
+        context.fillStyle = pattern;
+        context.fillRect(0, 0, 100, 50);
+        pixelShouldBe(1, 1, [0, 128, 0, 255]);
+        pixelShouldBe(98, 1, [0, 128, 0, 255]);
+        pixelShouldBe(1, 48, [0, 128, 0, 255]);
+        pixelShouldBe(98, 48, [0, 128, 0, 255]);
+
+        context.fillStyle = "green";
+        context.fillRect(0, 0, 50, 50);
+        var pattern = context.createPattern(green100x50, "no-repeat");
+        context.fillStyle = pattern;
+        context.translate(50, 0);
+        context.fillRect(-50, 0, 100, 50);
+        pixelShouldBe(1, 1, [0, 128, 0, 255]);
+        pixelShouldBe(98, 1, [0, 128, 0, 255]);
+        pixelShouldBe(1, 48, [0, 128, 0, 255]);
+        pixelShouldBe(98, 48, [0, 128, 0, 255]);
+    }, "Test the behavior of pattern use and construction.");
+</script>