Matcher isIn()

in lib/src/core_matchers.dart [265:276]

• 11 lines of code
• 4 McCabe index (conditional complexity)

Matcher isIn(Object? expected) {
  if (expected is Iterable) {
    return _In(expected, expected.contains);
  } else if (expected is String) {
    return _In<Pattern>(expected, expected.contains);
  } else if (expected is Map) {
    return _In(expected, expected.containsKey);
  }

  throw ArgumentError.value(
      expected, 'expected', 'Only Iterable, Map, and String are supported.');
}