Terry Lucas
61e6389f8a
R=bkonyi@google.com Change-Id: Ibca90f46788ef86fdc57f746f48e8fd85b78aa5a Reviewed-on: https://dart-review.googlesource.com/11361 Reviewed-by: Bob Nystrom <rnystrom@google.com>
76 lines
2.9 KiB
Dart
76 lines
2.9 KiB
Dart
import 'dart:html';
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import 'package:expect/minitest.dart';
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main() {
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CanvasElement canvas;
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canvas = new Element.tag('canvas');
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canvas.attributes['width'] = '100';
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canvas.attributes['height'] = '100';
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document.body.append(canvas);
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var isCanvasRenderingContext = predicate(
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(x) => x is CanvasRenderingContext, 'is a CanvasRenderingContext');
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var isNotCanvasRenderingContext = predicate(
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(x) => x is! CanvasRenderingContext, 'is not a CanvasRenderingContext');
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var isCanvasRenderingContext2D = predicate(
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(x) => x is CanvasRenderingContext2D, 'is a CanvasRenderingContext2D');
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var isNotCanvasRenderingContext2D = predicate(
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(x) => x is! CanvasRenderingContext2D,
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'is not a CanvasRenderingContext2D');
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var isElement = predicate((x) => x is Element, 'is an Element');
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var isNotElement = predicate((x) => x is! Element, 'is not an Element');
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var isCanvasElement =
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predicate((x) => x is CanvasElement, 'is a CanvasElement');
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var isNotCanvasElement =
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predicate((x) => x is! CanvasElement, 'is not a CanvasElement');
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var isImageData = predicate((x) => x is ImageData, 'is an ImageData');
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var isNotImageData = predicate((x) => x is! ImageData, 'is not an ImageData');
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//var isUint8ClampedArray =
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// predicate((x) => x is Uint8ClampedArray, 'is a Uint8ClampedArray');
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var isIntList = predicate((x) => x is List<int>, 'is a List<int>');
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test('Instanceof', () {
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expect(canvas, isNotCanvasRenderingContext);
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expect(canvas, isNotCanvasRenderingContext2D);
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expect(canvas, isElement);
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expect(canvas, isCanvasElement);
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expect(canvas, isNotImageData);
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// expect(canvas, isNot(isCanvasPixelArray));
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CanvasRenderingContext2D context = canvas.getContext('2d');
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expect(context, isCanvasRenderingContext);
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expect(context, isCanvasRenderingContext2D);
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expect(context, isNotElement);
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expect(context, isNotCanvasElement);
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expect(context, isNotImageData);
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// expect(context, isNot(isCanvasPixelArray));
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// FIXME(b/5286633): Interface injection type check workaround.
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var image = context.createImageData(
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canvas.width as dynamic, canvas.height as dynamic);
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expect(image, isNotCanvasRenderingContext);
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expect(image, isNotCanvasRenderingContext2D);
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expect(image, isNotElement);
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expect(image, isNotCanvasElement);
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expect(image, isImageData);
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// expect(image, isNot(isCanvasPixelArray));
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// Include CanvasPixelArray since constructor and prototype are not
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// available until one is created.
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var bytes = image.data;
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expect(bytes, isNotCanvasRenderingContext);
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expect(bytes, isNotCanvasRenderingContext2D);
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expect(bytes, isNotElement);
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expect(bytes, isNotCanvasElement);
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expect(bytes, isNotImageData);
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expect(bytes, isIntList);
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// FIXME: Ensure this is an SpanElement when we next update
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// WebKit IDL.
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var span = new Element.tag('span');
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expect(span, isElement);
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});
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}
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