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[presentation-api] Refine getAvailability() test (#4257)
Completes test on getAvailability to match recent updates made to the spec. The test assesses that the same Promise gets returned as long as it is unsettled, and that a new one is afterwards. It also checks that the algorithm returns a `true` availability (assuming that the current context features an available presentation display).
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,69 +1,48 @@ | ||
| <!DOCTYPE html> | ||
| <meta charset="utf-8"> | ||
| <title>Presentation API - monitor screen availability tests for Controlling User Agent</title> | ||
| <title>Getting the presentation displays availability information.</title> | ||
| <link rel="author" title="Marius Wessel" href="http://www.fokus.fraunhofer.de"> | ||
| <link rel="help" href="http://w3c.github.io/presentation-api/#dfn-controlling-user-agent"> | ||
| <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> | ||
| // --------------------------------- | ||
| // Helper Function | ||
| // --------------------------------- | ||
| var createRequestObject = function () { | ||
| var request = new PresentationRequest(presentationUrls); | ||
| return request; | ||
| } | ||
|
|
||
| // --------------------------------- | ||
| // Screen Availability Tests - begin | ||
| // --------------------------------- | ||
| // --------------------------------------- | ||
| // Presentation Availability Tests - begin | ||
| // --------------------------------------- | ||
|
|
||
| // Instance of Promise Test | ||
| test(function () { | ||
| var request = createRequestObject(); | ||
| assert_true(request.getAvailability() instanceof Promise); | ||
| }, 'The request is an Promise.') | ||
| promise_test(function(t) { | ||
| var availability; | ||
|
|
||
| // Instance of PresentationRequest Test | ||
| test(function () { | ||
| var request = createRequestObject(); | ||
| assert_true(request instanceof PresentationRequest); | ||
| }, 'The request is an instance of PresentationRequest.') | ||
| var request = new PresentationRequest(presentationUrls); | ||
| assert_true(request instanceof PresentationRequest, 'The request is an instance of PresentationRequest.'); | ||
|
|
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| // Instance of PresentationAvailability Test | ||
| promise_test(function () { | ||
| var request = createRequestObject(); | ||
| var promise = request.getAvailability(); | ||
| assert_equals(promise, request.getAvailability(), 'If the PresentationRequest object has an unsettled Promise, getAvailability returns that Promise.'); | ||
|
|
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| return request.getAvailability() | ||
| .then(function (availability) { | ||
| assert_true(availability instanceof PresentationAvailability); | ||
| }); | ||
| }, "The promise is an instance of PresentationAvailability"); | ||
| function 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.') | ||
| } | ||
|
|
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| // Availability.value is set Test | ||
| promise_test(function () { | ||
| var request = createRequestObject(); | ||
| return promise.then(function (a) { | ||
| availability = a; | ||
|
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| return request.getAvailability() | ||
| .then(function (availability) { | ||
| assert_true(typeof availability.value == 'boolean'); | ||
| }); | ||
| }, "The availability has an boolean value."); | ||
| 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.'); | ||
| assert_true(availability.value, 'The availability value is true when any presentation display is available.'); | ||
|
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| var 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.'); | ||
|
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| // Best Case Scenario Test | ||
| // ----------------------- | ||
| promise_test(function () { | ||
| var request = createRequestObject(); | ||
| return newPromise.then(function (newAvailability) { | ||
| assert_equals(availability, newAvailability, 'Promises from a PresentationRequest\'s getAvailability are resolved with the same PresentationAvailability object.'); | ||
| }, catchNotSupported); | ||
| }, catchNotSupported); | ||
| }); | ||
|
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||
| return request.getAvailability() | ||
| .then(function (availability) { | ||
| assert_true(availability.value); | ||
| }); | ||
| }, "There is an availability."); | ||
| // ------------------------------- | ||
| // Screen Availability Tests - end | ||
| // ------------------------------- | ||
| </script> |