public void Does_use_invariant_culture_for_numbers() { var dto = NumberClass.Create(1); dto.ToJson().Print(); dto.ToJsv().Print(); dto.ToCsv().Print(); Assert.That(dto.ToJson(), Does.Not.Contain("1000,9")); Assert.That(dto.ToJsv(), Does.Not.Contain("1000,9")); Assert.That(dto.ToCsv(), Does.Not.Contain("1000,9")); }