This is a testharness.js-based test.
[FAIL] exportKeyingMaterial with only label returns non-empty Uint8Array
  promise_test: Unhandled rejection with value: object "TypeError: wt.exportKeyingMaterial is not a function"
[FAIL] exportKeyingMaterial with label and context returns non-empty Uint8Array
  promise_test: Unhandled rejection with value: object "TypeError: wt.exportKeyingMaterial is not a function"
[FAIL] Different labels produce different keying material
  promise_test: Unhandled rejection with value: object "TypeError: wt.exportKeyingMaterial is not a function"
[FAIL] Different contexts produce different keying material
  promise_test: Unhandled rejection with value: object "TypeError: wt.exportKeyingMaterial is not a function"
[FAIL] Same label on same connection produces identical keying material
  promise_test: Unhandled rejection with value: object "TypeError: wt.exportKeyingMaterial is not a function"
[FAIL] exportKeyingMaterial rejects with InvalidStateError on closed connection
  promise_test: Unhandled rejection with value: object "TypeError: wt.exportKeyingMaterial is not a function"
[FAIL] Different connections produce different keying material with same label
  promise_test: Unhandled rejection with value: object "TypeError: wt1.exportKeyingMaterial is not a function"
[FAIL] exportKeyingMaterial accepts both ArrayBufferView and ArrayBuffer for label
  promise_test: Unhandled rejection with value: object "TypeError: wt.exportKeyingMaterial is not a function"
[FAIL] exportKeyingMaterial throws RangeError when label exceeds 255 bytes
  promise_test: Unhandled rejection with value: object "TypeError: wt.exportKeyingMaterial is not a function"
[FAIL] exportKeyingMaterial throws RangeError when context exceeds 255 bytes
  promise_test: Unhandled rejection with value: object "TypeError: wt.exportKeyingMaterial is not a function"
[FAIL] exportKeyingMaterial accepts long label up to 198 bytes
  promise_test: Unhandled rejection with value: object "TypeError: wt.exportKeyingMaterial is not a function"
[FAIL] exportKeyingMaterial accepts long context up to 255 bytes
  promise_test: Unhandled rejection with value: object "TypeError: wt.exportKeyingMaterial is not a function"
Harness: the test ran to completion.