This is a testharness.js-based test.
Found 2 FAIL, 0 TIMEOUT, 0 NOTRUN.
[FAIL] Valid value calc(0 - 100) for font property weight used for styling.
assert_true: expected true got false
[FAIL] Valid value calc(200 + 801) for font property weight used for styling.
assert_true: expected true got false
Harness: the test ran to completion.