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<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/shapedetection-helpers.js"></script>
<script>
// Detectors should reject undecodable images with an InvalidStateError.
const badImageTests =
[
{
createDetector: () => { return new FaceDetector(); },
name: "Face - detect(broken image)"
},
{
createDetector: () => { return new BarcodeDetector(); },
name: "Barcode - detect(broken image)"
},
{
createDetector: () => { return new TextDetector(); },
name: "Text - detect(broken image)"
}
];
for (let badImageTest of badImageTests) {
// This test verifies that a Detector will reject an undecodable image.
promise_test(async t => {
const img = new Image();
const error =
await detectOnElementAndExpectError(badImageTest.createDetector,
img, "/images/broken.png");
assert_equals(error.name, "InvalidStateError");
}, badImageTest.name);
}
// Detectors should reject undecodable videos with an InvalidStateError.
const badVideoTests =
[
{
createDetector: () => { return new FaceDetector(); },
name: "Face - detect(broken video)"
},
{
createDetector: () => { return new BarcodeDetector(); },
name: "Barcode - detect(broken video)"
},
{
createDetector: () => { return new TextDetector(); },
name: "Text - detect(broken video)"
}
];
for (let badVideoTest of badVideoTests) {
// This test verifies that a Detector will reject a broken video.
promise_test(async t => {
const video = document.createElement('video');
const error =
await detectOnElementAndExpectError(badVideoTest.createDetector,
video, "garbage.webm");
assert_equals(error.name, "InvalidStateError");
}, badVideoTest.name);
}
// Returns a Promise that is resolve()d if detect() is rejected. Needs an input
// |element| (e.g. an HTMLImageElement or HTMLVideoElement) and a |url| to load.
function detectOnElementAndExpectError(createDetector, element, url) {
return new Promise((resolve, reject) => {
const tryDetection = async () => {
const detector = createDetector();
try {
const detectionResult = await detector.detect(element);
reject("Promise should have been rejected.");
} catch (error) {
resolve(error);
}
};
element.onload = tryDetection;
element.onerror = tryDetection;
element.src = url;
});
};
</script>
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