1 files changed, 58 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.basic.worker.js b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.basic.worker.js
new file mode 100644
index 0000000000..012d9b11bd
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/line-styles/2d.line.width.basic.worker.js
@@ -0,0 +1,58 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.line.width.basic
+// Description:lineWidth determines the width of line strokes
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("lineWidth determines the width of line strokes");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.lineWidth = 20;
+  // Draw a green line over a red box, to check the line is not too small
+  ctx.fillStyle = '#f00';
+  ctx.strokeStyle = '#0f0';
+  ctx.fillRect(15, 15, 20, 20);
+  ctx.beginPath();
+  ctx.moveTo(25, 15);
+  ctx.lineTo(25, 35);
+  ctx.stroke();
+
+  // Draw a green box over a red line, to check the line is not too large
+  ctx.fillStyle = '#0f0';
+  ctx.strokeStyle = '#f00';
+  ctx.beginPath();
+  ctx.moveTo(75, 15);
+  ctx.lineTo(75, 35);
+  ctx.stroke();
+  ctx.fillRect(65, 15, 20, 20);
+
+  _assertPixel(canvas, 14,25, 0,255,0,255);
+  _assertPixel(canvas, 15,25, 0,255,0,255);
+  _assertPixel(canvas, 16,25, 0,255,0,255);
+  _assertPixel(canvas, 25,25, 0,255,0,255);
+  _assertPixel(canvas, 34,25, 0,255,0,255);
+  _assertPixel(canvas, 35,25, 0,255,0,255);
+  _assertPixel(canvas, 36,25, 0,255,0,255);
+
+  _assertPixel(canvas, 64,25, 0,255,0,255);
+  _assertPixel(canvas, 65,25, 0,255,0,255);
+  _assertPixel(canvas, 66,25, 0,255,0,255);
+  _assertPixel(canvas, 75,25, 0,255,0,255);
+  _assertPixel(canvas, 84,25, 0,255,0,255);
+  _assertPixel(canvas, 85,25, 0,255,0,255);
+  _assertPixel(canvas, 86,25, 0,255,0,255);
+  t.done();
+});
+done();