description("Series of tests to ensure correct behaviour of spreadMethod to a radial gradient."); var ctx = document.createElement('canvas').getContext('2d'); var radgrad = ctx.createRadialGradient(80,90,90,80,50,100); radgrad.addColorStop(0, 'green'); radgrad.addColorStop(1, 'green'); ctx.fillStyle = radgrad; ctx.fillRect(0, 0, 100, 100); var imageData = ctx.getImageData(0, 0, 100, 100); var imgdata = imageData.data; shouldBe("imgdata[4]", "0"); shouldBe("imgdata[5]", "128"); shouldBe("imgdata[6]", "0"); shouldBe("imgdata[7]", "255");