toml_schema.txtar

# TOML with $schema validates against local schema
exec validator valid.toml
stdout '✓'

# TOML with invalid data fails schema validation
! exec validator invalid.toml
stdout '×'
stdout 'error:'

# TOML without $schema passes (syntax only)
exec validator plain.toml
stdout '✓'

# TOML without $schema + --require-schema fails
! exec validator --require-schema plain.toml
stdout '×'
stdout 'no schema declared'

# TOML with $schema + --require-schema passes
exec validator --require-schema valid.toml
stdout '✓'

-- schema.json --
{
  "type": "object",
  "required": ["host", "port"],
  "properties": {
    "host": { "type": "string" },
    "port": { "type": "integer" },
    "debug": { "type": "boolean" }
  },
  "additionalProperties": false
}
-- valid.toml --
"$schema" = "schema.json"
host = "localhost"
port = 5432
debug = true
-- invalid.toml --
"$schema" = "schema.json"
host = "localhost"
port = "not_a_number"
-- plain.toml --
host = "localhost"
port = 5432