Harness status: OK Found 26 tests 26 Pass Pass Should be known: '(prefers-contrast)' Pass Should be known: '(prefers-contrast: no-preference)' Pass Should be known: '(prefers-contrast: more)' Pass Should be known: '(prefers-contrast: less)' Pass Should be known: '(prefers-contrast: custom)' Pass Should be parseable: '(prefers-contrast: increase)' Pass Should be unknown: '(prefers-contrast: increase)' Pass Should be parseable: '(prefers-contrast: none)' Pass Should be unknown: '(prefers-contrast: none)' Pass Should be parseable: '(prefers-contrast: forced high)' Pass Should be unknown: '(prefers-contrast: forced high)' Pass Should be parseable: '(prefers-contrast: forced low)' Pass Should be unknown: '(prefers-contrast: forced low)' Pass Should be parseable: '(prefers-contrast > increase)' Pass Should be unknown: '(prefers-contrast > increase)' Pass Should be parseable: '(prefers-increased-contrast)' Pass Should be unknown: '(prefers-increased-contrast)' Pass Should be parseable: '(prefers-decreased-contrast)' Pass Should be unknown: '(prefers-decreased-contrast)' Pass Should be parseable: '(prefers-contrast: high)' Pass Should be unknown: '(prefers-contrast: high)' Pass Should be parseable: '(prefers-contrast: low)' Pass Should be unknown: '(prefers-contrast: low)' Pass Should be parseable: '(prefers-contrast: forced)' Pass Should be unknown: '(prefers-contrast: forced)' Pass Check boolean context evaluation.