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diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.overlap.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.overlap.html
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+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.overlap.html
@@ -0,0 +1,51 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<title>Canvas test: 2d.gradient.interpolate.overlap</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/html/canvas/resources/canvas-tests.js"></script>
+<link rel="stylesheet" href="/html/canvas/resources/canvas-tests.css">
+<body class="show_output">
+
+<h1>2d.gradient.interpolate.overlap</h1>
+<p class="desc"></p>
+
+
+<p class="output">Actual output:</p>
+<canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
+<p class="output expectedtext">Expected output:<p><img src="2d.gradient.interpolate.overlap.png" class="output expected" id="expected" alt="">
+<ul id="d"></ul>
+<script>
+var t = async_test("");
+_addTest(function(canvas, ctx) {
+
+  canvas.width = 200;
+  var g = ctx.createLinearGradient(0, 0, 200, 0);
+  g.addColorStop(0, '#f00');
+  g.addColorStop(0, '#ff0');
+  g.addColorStop(0.25, '#00f');
+  g.addColorStop(0.25, '#0f0');
+  g.addColorStop(0.25, '#0f0');
+  g.addColorStop(0.25, '#0f0');
+  g.addColorStop(0.25, '#ff0');
+  g.addColorStop(0.5, '#00f');
+  g.addColorStop(0.5, '#0f0');
+  g.addColorStop(0.75, '#00f');
+  g.addColorStop(0.75, '#f00');
+  g.addColorStop(0.75, '#ff0');
+  g.addColorStop(0.5, '#0f0');
+  g.addColorStop(0.5, '#0f0');
+  g.addColorStop(0.5, '#ff0');
+  g.addColorStop(1, '#00f');
+  ctx.fillStyle = g;
+  ctx.fillRect(0, 0, 200, 50);
+  _assertPixelApprox(canvas, 49,25, 0,0,255,255, 16);
+  _assertPixelApprox(canvas, 51,25, 255,255,0,255, 16);
+  _assertPixelApprox(canvas, 99,25, 0,0,255,255, 16);
+  _assertPixelApprox(canvas, 101,25, 255,255,0,255, 16);
+  _assertPixelApprox(canvas, 149,25, 0,0,255,255, 16);
+  _assertPixelApprox(canvas, 151,25, 255,255,0,255, 16);
+
+});
+</script>
+