| This is a testharness.js-based test. |
| PASS insertDTMF() should succeed if tones contains valid DTMF characters |
| PASS insertDTMF() should throw InvalidCharacterError if tones contains invalid DTMF characters |
| FAIL insertDTMF() should throw InvalidStateError if transceiver is stopped transceiver.stop is not a function |
| PASS insertDTMF() should throw InvalidStateError if transceiver.currentDirection is recvonly |
| PASS insertDTMF() should throw InvalidStateError if transceiver.currentDirection is inactive |
| PASS insertDTMF() should set toneBuffer to provided tones normalized, with old tones overridden |
| PASS insertDTMF() after remove and close should reject |
| Harness: the test ran to completion. |
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