mediasource-worker-must-fail-if-unsupported.js

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importScripts("/resources/testharness.js");

test(t => {

  // The Window test html conditionally fetches and runs these tests only if the

  // implementation does not have a true-valued static

  // canConstructInDedicatedWorker property on MediaSource in the Window

  // context. So, the implementation must agree on lack of support here in the

  // dedicated worker context.

  // Ensure we're executing in a dedicated worker context.

  assert_true(self instanceof DedicatedWorkerGlobalScope, "self instanceof DedicatedWorkerGlobalScope");

  assert_true(self.MediaSource === undefined, "MediaSource is undefined in DedicatedWorker");

  assert_throws_js(ReferenceError,

                   function() { var ms = new MediaSource(); },

                   "MediaSource construction in DedicatedWorker throws exception");

}, "MediaSource construction in DedicatedWorker context must fail if Window context did not claim MSE supported in DedicatedWorker");

done();