LayoutTests/webgl/offscreen-webgl-errors-to-console.html

<!DOCTYPE html><!-- webkit-test-runner [ UseGPUProcessForWebGLEnabled=true OffscreenCanvasEnabled=true ] -->
<html>
<body>
<script src="../resources/js-test-pre.js"></script>
<script>
// Tests that using offscreen canvas WebGL, we log a warning to the console if the setting is enabled.
// One log should be produced.
if (window.testRunner)
    testRunner.dumpAsText();

function runTest() {
    if (!window.OffscreenCanvas) {
        testPassed("No OffscreenCanvas support");
        return;
    }
    for (let errorsToConsole of [true, false]) {
        if (window.internals)
            window.internals.settings.setWebGLErrorsToConsoleEnabled(errorsToConsole);
        var canvas = new OffscreenCanvas(10, 10);
        var gl = canvas.getContext('webgl');
        if (!gl) {
            testPassed("No OffscreenCanvas WebGL");
            continue;
        }
        gl.activeTexture(gl.TEXTURE31 + 444);
        testPassed(`Case: ${errorsToConsole}`);
    }
}

runTest();
</script>
<script src="../resources/js-test-post.js"></script>
</body>
</html>