servo/tests/wpt/web-platform-tests/shape-detection/shapedetection-empty-input.https.html

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<!DOCTYPE html>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script>
// This test verifies *Detector.detect() returns an empty list when fed with
// an empty HTMLImageElement.
const emptyInputTests =
[
{
createDetector: () => { return new FaceDetector(); },
name: "Face - detect(empty)"
},
{
createDetector: () => { return new BarcodeDetector(); },
name: "Barcode - detect(empty)"
}
];
for (let emptyInputTest of emptyInputTests) {
promise_test(async t =>{
const img = new Image();
const imgWatcher = new EventWatcher(t, img, ["load", "error"]);
img.src = "";
await imgWatcher.wait_for("error");
const detector = emptyInputTest.createDetector();
const detectionResult = await detector.detect(img);
assert_equals(detectionResult.length, 0);
}, emptyInputTest.name);
}
</script>