description("Test that the rendering context state is intact after a call to putImageData()");
var ctx = document.createElement('canvas').getContext('2d');

ctx.fillStyle = 'red';
ctx.fillRect(0, 0, 1, 1);

debug("Checking initial state for sanity");
var imageData = ctx.getImageData(0, 0, 2, 1);
var imgdata = imageData.data;
shouldBe("ctx.fillStyle", "'#ff0000'");
shouldBe("imgdata[0]", "255");
shouldBe("imgdata[1]", "0");
shouldBe("imgdata[2]", "0");
shouldBe("imgdata[3]", "255");
shouldBe("imgdata[4]", "0");
shouldBe("imgdata[5]", "0");
shouldBe("imgdata[6]", "0");
shouldBe("imgdata[7]", "0");

debug("Calling putImageData()");
ctx.putImageData(imageData, 1, 1);
imageData = ctx.getImageData(1, 1, 1, 1);
imgdata = imageData.data;
shouldBe("imgdata[0]", "255");
shouldBe("imgdata[1]", "0");
shouldBe("imgdata[2]", "0");
shouldBe("imgdata[3]", "255");

debug("Checking if state is intact");
shouldBe("ctx.fillStyle", "'#ff0000'");

ctx.fillRect(2, 2, 1, 1);
imageData = ctx.getImageData(2, 2, 1, 1);
imgdata = imageData.data;
shouldBe("imgdata[0]", "255");
shouldBe("imgdata[1]", "0");
shouldBe("imgdata[2]", "0");
shouldBe("imgdata[3]", "255");