Count Verifier

The count: verifier asserts the count of cells in a region. It is the terminal-shaped sibling of cairn's count: { role: ... } — cairn counts DOM nodes by role, glyphrun counts cells by rune.

outcomes:
  - id: exactly_three_errors
    description: the error pane shows three error rows
    verify:
      count:
        region:
          x: 0
          y: 0
          width: 80
          height: 24
        matches: "x"          # optional: count cells equal to this rune
        equals: 3             # exactly one of equals / atLeast / atMost / between

Matcher (matches)

• omitted or "nonEmpty" — count non-blank cells
• a single rune — count cells equal to that rune
• multi-character strings are rejected (cells are single runes; a substring would be ambiguous)

Comparator (exactly one)

Field	Meaning
equals: N	matched count must equal N
atLeast: N	matched count must be >= N
atMost: N	matched count must be <= N
between: [min, max]	matched count must be in [min, max]

Region (optional)

• omitted — the full screen
• region: { x, y, width, height } — restrict to a sub-region

Evidence

The verifier returns the matched count as { matched, comparator, expected } in outcomes/<id>.raw.json so a passing run can be inspected without re-running.

See Verifiers for the full vocabulary.