description("Series of tests to ensure correct behaviour for stroke() on an empty fillStyle() (alpha=0)"); var ctx = document.createElement('canvas').getContext('2d'); ctx.fillStyle = 'rgba(0,0,0,0)'; ctx.strokeStyle = 'green'; ctx.lineWidth = 200; ctx.moveTo(0,100); ctx.lineTo(200,100); ctx.stroke(); var imageData = ctx.getImageData(0, 0, 100, 100); var imgdata = imageData.data; shouldBe("imgdata[4]", "0"); shouldBe("imgdata[5]", "128"); shouldBe("imgdata[6]", "0");