[mediametadata.html]
  type: testharness
  [Test that mediaSession.metadata is properly set]
    expected: FAIL

  [Test that changes to metadata propagate properly]
    expected: FAIL

  [Test that resetting metadata to null is reflected]
    expected: FAIL

  [Test that MediaMetadata is constructed using a dictionary]
    expected: FAIL

  [Test that MediaMetadata constructor can take no parameter]
    expected: FAIL

  [Test the different values allowed in MediaMetadata init dictionary]
    expected: FAIL

  [Test the default values for MediaMetadata with empty init dictionary]
    expected: FAIL

  [Test the default values for MediaMetadata with no init dictionary]
    expected: FAIL

  [Test that passing unknown values to the dictionary is a no-op]
    expected: FAIL

  [Test that MediaMetadata is read/write]
    expected: FAIL

  [Test that MediaMetadat.artwork can't be modified]
    expected: FAIL

  [Test that MediaMetadata.artwork will not expose unknown properties]
    expected: FAIL

  [Test that MediaMetadata.artwork is Frozen]
    expected: FAIL

  [Test that MediaMetadata.artwork returns parsed urls]
    expected: FAIL

  [Test that MediaMetadata throws when setting an invalid url]
    expected: FAIL

  [Test MediaImage default values]
    expected: FAIL

  [Test that MediaImage.src is required]
    expected: FAIL

