Files
sdk/tests/lib/html/canvasrendering/image_element_test.dart
T
Lasse R.H. Nielsen f8086c81ae Collect all test-related files in package:expect.
Collects files from `package:async_helper` and `tests/language`
that are generally useful, so that all test-related helpers are
in `package:expect`.

Moves the two libraries from `package:async_helper` into `package:expect`,
and the `tests/language/static_type_helper.dart` file too.

Deprecates `async_minitest.dart`, to follow `minitest.dart`,
expecting the Flutter use of it to have been fixed to not break
on deprecation (I believe Flutter no longer breaks builds on deprecations at all).

Patch 1 is the actual change.
Patch 2+4+8 is changing all existing references to the files.
Patch 6 ignores deprecation in files still using `async_minitest.dart`.

3+5+7+9 are updating this text to make the numbers match.
Then it's just test-expectations and small tweaks from there.

Change-Id: I1b665135b5fef9b9a0c3b340ffe9daf874d0174c
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/373120
Reviewed-by: Nate Bosch <nbosch@google.com>
Reviewed-by: Devon Carew <devoncarew@google.com>
Commit-Queue: Lasse Nielsen <lrn@google.com>
2024-10-11 16:53:52 +00:00

109 lines
2.9 KiB
Dart

// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
library canvas_rendering_context_2d_test;
import 'dart:async';
import 'dart:html';
import 'dart:math';
import 'canvas_rendering_util.dart';
import 'package:expect/async_helper.dart';
Future testWithThreeParams() async {
setupFunc();
// Draw an image to the canvas from an image element.
var dataUrl = otherCanvas.toDataUrl('image/gif');
var img = new ImageElement();
var loadedFuture = img.onLoad.first;
img.onError.listen((_) {
throw ('URL failed to load.');
});
img.src = dataUrl;
await loadedFuture;
context.drawImage(img, 50, 50);
expectPixelFilled(50, 50);
expectPixelFilled(55, 55);
expectPixelFilled(59, 59);
expectPixelUnfilled(60, 60);
expectPixelUnfilled(0, 0);
expectPixelUnfilled(70, 70);
tearDownFunc();
}
Future testWithFiveParams() async {
setupFunc();
// Draw an image to the canvas from an image element and scale it.
var dataUrl = otherCanvas.toDataUrl('image/gif');
var img = new ImageElement();
var loadedFuture = img.onLoad.first;
img.onError.listen((_) {
throw ('URL failed to load.');
});
img.src = dataUrl;
await loadedFuture;
context.drawImageToRect(img, new Rectangle(50, 50, 20, 20));
expectPixelFilled(50, 50);
expectPixelFilled(55, 55);
expectPixelFilled(59, 59);
expectPixelFilled(60, 60);
expectPixelFilled(69, 69);
expectPixelUnfilled(70, 70);
expectPixelUnfilled(0, 0);
expectPixelUnfilled(80, 80);
tearDownFunc();
}
Future testWithNineParams() async {
setupFunc();
// Draw an image to the canvas from an image element and scale it.
otherContext.fillStyle = "blue";
otherContext.fillRect(5, 5, 5, 5);
var dataUrl = otherCanvas.toDataUrl('image/gif');
var img = new ImageElement();
var loadedFuture = img.onLoad.first;
img.onError.listen((_) {
throw ('URL failed to load.');
});
img.src = dataUrl;
await loadedFuture;
// This will take a 6x6 square from the first canvas from position 2,2
// and then scale it to a 20x20 square and place it to the second
// canvas at 50,50.
context.drawImageToRect(img, new Rectangle(50, 50, 20, 20),
sourceRect: new Rectangle(2, 2, 6, 6));
checkPixel(readPixel(50, 50), [255, 0, 0, 255]);
checkPixel(readPixel(55, 55), [255, 0, 0, 255]);
checkPixel(readPixel(60, 50), [255, 0, 0, 255]);
checkPixel(readPixel(65, 65), [0, 0, 255, 255]);
checkPixel(readPixel(69, 69), [0, 0, 255, 255]);
expectPixelFilled(50, 50);
expectPixelFilled(55, 55);
expectPixelFilled(59, 59);
expectPixelFilled(60, 60);
expectPixelFilled(69, 69);
expectPixelUnfilled(70, 70);
expectPixelUnfilled(0, 0);
expectPixelUnfilled(80, 80);
tearDownFunc();
}
main() {
asyncTest(() async {
await testWithThreeParams();
await testWithFiveParams();
await testWithNineParams();
});
}