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/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
/**
* Tests if the WebGL context is correctly instrumented every time the
* target navigates.
*/
function* ifWebGLSupported() {
let { target, front } = yield initBackend(SIMPLE_CANVAS_URL);
front.setup({ reload: true });
yield testHighlighting((yield once(front, "program-linked")));
ok(true, "Canvas was correctly instrumented on the first navigation.");
reload(target);
yield testHighlighting((yield once(front, "program-linked")));
ok(true, "Canvas was correctly instrumented on the second navigation.");
reload(target);
yield testHighlighting((yield once(front, "program-linked")));
ok(true, "Canvas was correctly instrumented on the third navigation.");
yield removeTab(target.tab);
finish();
function testHighlighting(programActor) {
return Task.spawn(function* () {
yield ensurePixelIs(front, { x: 0, y: 0 }, { r: 255, g: 0, b: 0, a: 255 }, true);
yield ensurePixelIs(front, { x: 511, y: 511 }, { r: 0, g: 255, b: 0, a: 255 }, true);
ok(true, "The corner pixel colors are correct before highlighting.");
yield programActor.highlight([0, 1, 0, 1]);
yield ensurePixelIs(front, { x: 0, y: 0 }, { r: 0, g: 0, b: 0, a: 255 }, true);
yield ensurePixelIs(front, { x: 511, y: 511 }, { r: 0, g: 255, b: 0, a: 255 }, true);
ok(true, "The corner pixel colors are correct after highlighting.");
yield programActor.unhighlight();
yield ensurePixelIs(front, { x: 0, y: 0 }, { r: 255, g: 0, b: 0, a: 255 }, true);
yield ensurePixelIs(front, { x: 511, y: 511 }, { r: 0, g: 255, b: 0, a: 255 }, true);
ok(true, "The corner pixel colors are correct after unhighlighting.");
});
}
}
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