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Diffstat (limited to 'testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.constructor.html')
-rw-r--r-- | testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.constructor.html | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.constructor.html b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.constructor.html new file mode 100644 index 0000000000..a2ad1dcc7e --- /dev/null +++ b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.constructor.html @@ -0,0 +1,51 @@ +<!DOCTYPE html> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="/html/canvas/resources/canvas-tests.js"></script> +<link rel="help" href="https://html.spec.whatwg.org/#dom-offscreencanvas"> +<script> + +test(function() { + assert_throws_js( + TypeError, + () => OffscreenCanvas(100, 50), + "Calling OffscreenCanvas constructor without 'new' must throw" + ); +}, "OffscreenCanvas constructor called as normal function"); + +test(function() { + var offscreenCanvas = new OffscreenCanvas(100, 50); + assert_equals(offscreenCanvas.width, 100); + assert_equals(offscreenCanvas.height, 50); + + offscreenCanvas.width = 50; + offscreenCanvas.height = 100; + assert_equals(offscreenCanvas.width, 50); + assert_equals(offscreenCanvas.height, 100); +}, "Test that calling OffscreenCanvas's constructor generates correct width and height."); + +test(function() { + var offscreenCanvas1 = new OffscreenCanvas(1, 1); + + offscreenCanvas1.width = null; + offscreenCanvas1.height = null; + assert_equals(offscreenCanvas1.width, 0); + assert_equals(offscreenCanvas1.height, 0); + + assert_throws_js(TypeError, function() { new OffscreenCanvas(-1, -1); }); + + var offscreenCanvas2 = new OffscreenCanvas(null, null); + assert_equals(offscreenCanvas2.width, 0); + assert_equals(offscreenCanvas2.height, 0); + + assert_throws_js(TypeError, function() { offscreenCanvas2.width = -1; }); + assert_throws_js(TypeError, function() { offscreenCanvas2.height = -1; }); + + var obj = {Name: "John Doe", Age: 30}; + assert_throws_js(TypeError, function() { offscreenCanvas2.width = obj; }); + assert_throws_js(TypeError, function() { offscreenCanvas2.height = obj; }); + assert_throws_js(TypeError, function() { new OffscreenCanvas(obj, obj); }); +}, "Test that OffscreenCanvas constructor handles invalid arguments correctly"); + +</script> + |