public void With_Invalid_String() => MaybeParsers .Bool("foobar") .AssertNone();
public void With_Valid_String_For_False() => MaybeParsers.Bool("false").AssertValue(false);
public void With_Valid_String_For_True() => MaybeParsers.Bool("true").AssertValue(true);
public void With_Null_String() => MaybeParsers .Bool(null) .AssertNone();