| Tests Biquad allpass filter. | |
| On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". | |
| PASS Rendered output did not have infinities or NaNs. | |
| PASS Allpass filter response is correct. | |
| PASS Test signal was correctly filtered. | |
| PASS successfullyParsed is true | |
| TEST COMPLETE | |