public void WHEN_converting_to_string_with_IFormatProvider_THEN_string_is_as_expected(
                ThroughputPerDay throughput, string formatString, CultureInfo culture, string expectedString)
            {
                string actualString = throughput.ToString(formatString, culture);

                Assert.Equal(expectedString, actualString);
            }
            public void WHEN_converting_to_string_THEN_string_is_as_expected(
                ThroughputPerDay throughput, string expectedString)
            {
                CultureInfo.DefaultThreadCurrentCulture = EnglishUsCultureInfo;
                string actualString = throughput.ToString();

                Assert.Equal(expectedString, actualString);
            }