This is not the authoritative conformance test suite for reflection. The authoritative tests can be found here, split up into sections:

This test suite is provided for implementers' convenience in debugging failures. It groups similar failures in a fashion that should help fix them. It is not intended to be suitable for incorporation into automated testing frameworks.

Filter out errors matching a regex (operates on HTML not text, you have to manually escape entities):

Passed: 161462 (99.9%). Failed: 148. Time to complete: 2.622 s.

Errors for type enum:

Errors for type string:

Errors for type limited double:

These IDL attributes were of undefined type, presumably representing unimplemented features (cordoned off into a separate section for tidiness):

(Note: missing tests for types tokenlist, settable tokenlist, [object Object], [object Object].)