View Source Machete.MaybeMatcher (Machete v0.3.0)

Defines a matcher that matches against another matcher & also matches nil

Summary

t()

Describes an instance of this matcher

maybe(matcher)

Matches against another matcher & also matches nil

(opaque)

@opaque t()

Describes an instance of this matcher

@spec maybe(Machete.Matchable.t()) :: t()

Matches against another matcher & also matches nil

Takes another matcher as its sole (mandatory) argument

Examples:

iex> assert nil ~> maybe(string())
true

iex> assert "abc" ~> maybe(string())
true