OptionalinvalidOptionalinvalidIf specified, ensure that the grammar fails on this input.
OptionalonlyIf any test has this set to true, only run the tests with this set to true.
OptionaloptionsExtra options to pass to parse(), overriding whatever else this library would have otherwise used.
Optionalpeg$maxExpected peg$maxFailPos.
OptionalskipIf true, skip this test.
OptionalstartWhich valid start rule to use? Default: grammar default start rule.
OptionalvalidIf specified, check this against the startRule.
OptionalvalidWhat result should startRule return for validInput? Default: validInput.
What to append to validInput to make it invalid, so that library mode will return a prefix match.