public void Spalten_Header_werden_geliefert() { var sut = new DataPump(); var headers = sut.GenerateHeader(new[] { new ColumnDefinition("a", new IncrementingIntGenerator()), new ColumnDefinition("b", new IncrementingIntGenerator()) }); Assert.That(headers.Select(x => x.Header), Is.EqualTo(new[]{"a", "b"})); }