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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /testing/web-platform/tests/imagebitmap-renderingcontext/transferFromImageBitmap-null-offscreen.html
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/imagebitmap-renderingcontext/transferFromImageBitmap-null-offscreen.html')
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diff --git a/testing/web-platform/tests/imagebitmap-renderingcontext/transferFromImageBitmap-null-offscreen.html b/testing/web-platform/tests/imagebitmap-renderingcontext/transferFromImageBitmap-null-offscreen.html
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--- /dev/null
+++ b/testing/web-platform/tests/imagebitmap-renderingcontext/transferFromImageBitmap-null-offscreen.html
@@ -0,0 +1,63 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Canvas's ImageBitmapRenderingContext test</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<link rel="help" href="https://html.spec.whatwg.org/multipage/scripting.html#the-imagebitmap-rendering-context">
+<script>
+var width = 10;
+var height = 10;
+
+function testCanvas(bitmapCanvas, r, g, b, a)
+{
+ var myCanvas = document.createElement('canvas');
+ myCanvas.width = width;
+ myCanvas.height = height;
+ var myCtx = myCanvas.getContext('2d');
+ myCtx.drawImage(bitmapCanvas, 0, 0);
+ var color = myCtx.getImageData(5, 5, 1, 1).data;
+ assert_array_equals(color, [r, g, b, a]);
+}
+
+promise_test(function() {
+ function testTransferFromImageBitmapNullability(greenImage, redImage) {
+ var bitmapCanvas = new OffscreenCanvas(width,height);
+ var bitmapCtx = bitmapCanvas.getContext('bitmaprenderer');
+ bitmapCtx.transferFromImageBitmap(greenImage);
+
+ // Make sure the bitmap renderer canvas is filled correctly.
+ testCanvas(bitmapCanvas, 0, 255, 0, 255);
+
+ // Test if passing null resets the bitmap renderer canvas.
+ // Drawing the resetted canvas cannot change the destination canvas.
+ bitmapCtx.transferFromImageBitmap(null);
+ testCanvas(bitmapCanvas, 0, 0, 0, 0);
+
+ // Test if we can redraw the bitmap canvas correctly after reset.
+ bitmapCtx.transferFromImageBitmap(redImage);
+ testCanvas(bitmapCanvas, 255, 0, 0, 255);
+ }
+
+ var greenCanvas = document.createElement('canvas');
+ greenCanvas.width = width;
+ greenCanvas.height = height;
+ var greenCtx = greenCanvas.getContext('2d');
+ greenCtx.fillStyle = '#0f0';
+ greenCtx.fillRect(0, 0, width, height);
+
+ var redCanvas = document.createElement('canvas');
+ redCanvas.width = width;
+ redCanvas.height = height;
+ var redCtx = redCanvas.getContext('2d');
+ redCtx.fillStyle = '#f00';
+ redCtx.fillRect(0, 0, width, height);
+
+ return Promise.all([
+ createImageBitmap(greenCanvas),
+ createImageBitmap(redCanvas),
+ ]).then(([greenImage, redImage]) => {
+ testTransferFromImageBitmapNullability(greenImage, redImage);
+ });
+},'Test that transferFromImageBitmap(null) discards the previously transferred image');
+
+</script>