<!DOCTYPE html> <link rel="help" href="https://wicg.github.io/shape-detection-api/#dom-barcodedetector-getsupportedformats"> <script src="/resources/testharness.js"></script> <script src="/resources/testharnessreport.js"></script> <script src="resources/shapedetection-helpers.js"></script> <script> detection_test('BarcodeDetectionTest', async t => { const result = await BarcodeDetector.getSupportedFormats(); assert_equals(result.length, 3, 'Number of supported formats'); assert_equals(result[0], 'aztec', 'format 1'); assert_equals(result[1], 'data_matrix', 'format 2'); assert_equals(result[2], 'qr_code', 'format 3'); }, 'get supported barcode formats'); detection_test('BarcodeDetectionTest', async (t, detectionTest) => { // Disable built-in support for barcode detection to test fallback handling. detectionTest.MockBarcodeDetectionProvider().simulateNoImplementation(); const result = await BarcodeDetector.getSupportedFormats(); assert_equals(result.length, 0, 'result.length'); }, 'getSupportedFormats() resolves with empty list when unsupported'); </script>