| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>Getting the presentation displays availability information.</title> |
| <meta name="timeout" content="long"> |
| <link rel="author" title="Marius Wessel" href="http://www.fokus.fraunhofer.de"> |
| <link rel="author" title="Tomoyuki Shimizu" href="https://github.com/tomoyukilabs"> |
| <link rel="help" href="http://w3c.github.io/presentation-api/#dfn-presentation-display-availability"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="common.js"></script> |
| |
| <p>The test passes if a "PASS" result appears.</p> |
| |
| <script> |
| |
| // --------------------------------------- |
| // Presentation Availability Tests - begin |
| // --------------------------------------- |
| |
| const catchNotSupported = err => { |
| assert_equals(err.name, 'NotSupportedError', 'getAvailability() rejects a Promise with a NotSupportedError exception, if the browser can find presentation displays only when starting a connection.') |
| }; |
| |
| promise_test(t => { |
| let availability; |
| |
| const request = new PresentationRequest(presentationUrls); |
| assert_true(request instanceof PresentationRequest, 'The request is an instance of PresentationRequest.'); |
| |
| const promise = request.getAvailability(); |
| assert_true(promise instanceof Promise, 'PresentationRequest.getAvailability() returns a Promise.'); |
| const samePromise = request.getAvailability(); |
| assert_true(samePromise instanceof Promise, 'PresentationRequest.getAvailabilty() returns a Promise.'); |
| assert_equals(promise, samePromise, 'If the PresentationRequest object has an unsettled Promise, getAvailability returns that Promise.'); |
| |
| return promise.then(a => { |
| availability = a; |
| assert_true(availability instanceof PresentationAvailability, 'The promise is resolved with an instance of PresentationAvailability.'); |
| assert_equals(typeof availability.value, 'boolean', 'The availability has an boolean value.'); |
| |
| const request2 = new PresentationRequest('https://example.com'); |
| return request2.getAvailability(); |
| }).then(a => { |
| assert_not_equals(availability, a, 'A presentation availability object is newly created if the presentation request has a newly added presentation URLs.'); |
| |
| const newPromise = request.getAvailability(); |
| assert_not_equals(promise, newPromise, 'If the Promise from a previous call to getAvailability has already been settled, getAvailability returns a new Promise.'); |
| |
| return newPromise.then(newAvailability => { |
| assert_equals(availability, newAvailability, 'Promises from a PresentationRequest\'s getAvailability are resolved with the same PresentationAvailability object.'); |
| }, catchNotSupported); |
| }, catchNotSupported); |
| }); |
| </script> |