Provides matchers to help unit-testing your apps when using functional programming types defined in the dartz package.

Getting started

Installation :

dart pub add --dev dartz_test

Usage

Eithers

test('either is right', () {
    Either either = Right('foo');

    expect(either, isRight);
    expect(either, isRightOf('foo'));
    expect(either, isRightThat(equals('foo')));

    var value = either.getRightOrFailTest();
    expect(value, equals('foo'));
  });

The same matchers exist for Left

Options

  test('option is none', () {
    Option option = None();
    expect(option, isNone);
  });

  test('option is Some', () {
    Option option = Some('foo');

    expect(option, isSome);
    expect(option, isSomeOf('foo'));
    expect(option, isSomeThat(equals('foo')));

    var value = option.getOrFailTest();
    expect(value, equals('foo'));
  });