public void CurrencyConverter_Normal_ImplementsIValueConverter()
{
CurrencyConverter cc = new CurrencyConverter();
IValueConverter vc = cc as IValueConverter;
Assert.IsNotNull(vc, "CurrencyConverter should implement the IValueConverter interface");
}
public void Convert_Normal_ConvertsToDollars()
{
CurrencyConverter cc = new CurrencyConverter();
object result = cc.Convert(10, typeof(string), null, CultureInfo.CurrentCulture);
Assert.AreEqual("$10.00", (string)result, "Should convert 10 to $10.00");
result = cc.Convert("10", typeof(string), null, CultureInfo.CurrentCulture);
Assert.AreEqual("$10.00", (string)result, "Should convert \"10\" to $10.00");
}
public void Convert_Boundary_ReturnsEmptyStringForNullInputs()
{
CurrencyConverter cc = new CurrencyConverter();
object expected = string.Empty;
object result = cc.Convert(null, typeof(string), null, CultureInfo.CurrentCulture);
Assert.AreEqual(expected, result, "Null inputs should become empty strings");
result = cc.Convert(new int?(), typeof(string), null, CultureInfo.CurrentCulture);
Assert.AreEqual(expected, result, "Null inputs should become empty strings");
}
public void Convert_Normal_RoundsCorrectly()
{
CurrencyConverter cc = new CurrencyConverter();
object result = cc.Convert(9.99, typeof(string), null, CultureInfo.CurrentCulture);
Assert.AreEqual("$9.99", (string)result, "Should convert 9.99 to $9.99");
result = cc.Convert(9.995, typeof(string), null, CultureInfo.CurrentCulture);
Assert.AreEqual("$10.00", (string)result, "Should convert 9.995 to $10.00");
result = cc.Convert(9.994, typeof(string), null, CultureInfo.CurrentCulture);
Assert.AreEqual("$9.99", (string)result, "Should convert 9.994 to $9.99");
result = cc.Convert(.025, typeof(string), null, CultureInfo.CurrentCulture);
Assert.AreEqual("$0.03", (string)result, "Should convert .025 to $0.03");
result = cc.Convert(1234.567, typeof(string), null, CultureInfo.CurrentCulture);
Assert.AreEqual("$1,234.57", (string)result, "Should convert 1234.567 to $1,234.57");
}
public void Convert_Normal_RoundsCorrectlyForCulture()
{
CurrencyConverter cc = new CurrencyConverter();
System.Threading.Thread.CurrentThread.CurrentCulture = new CultureInfo("en-GB");
System.Threading.Thread.CurrentThread.CurrentCulture = new CultureInfo("en-GB");
object result = cc.Convert(9.99, typeof(string), null, CultureInfo.CurrentCulture);
Assert.AreEqual("£9.99", (string)result, "Should convert 9.99 to £9.99");
result = cc.Convert(9.995, typeof(string), null, CultureInfo.CurrentCulture);
Assert.AreEqual("£10.00", (string)result, "Should convert 9.995 to £10.00");
result = cc.Convert(9.994, typeof(string), null, CultureInfo.CurrentCulture);
Assert.AreEqual("£9.99", (string)result, "Should convert 9.994 to £9.99");
result = cc.Convert(.025, typeof(string), null, CultureInfo.CurrentCulture);
Assert.AreEqual("£0.03", (string)result, "Should convert .025 to £0.03");
result = cc.Convert(1234.567, typeof(string), null, CultureInfo.CurrentCulture);
Assert.AreEqual("£1,234.57", (string)result, "Should convert 1234.567 to £1,234.57");
System.Threading.Thread.CurrentThread.CurrentCulture = new CultureInfo("fr-FR");
System.Threading.Thread.CurrentThread.CurrentCulture = new CultureInfo("fr-FR");
result = cc.Convert(9.99, typeof(string), null, CultureInfo.CurrentCulture);
Assert.AreEqual("9,99 €", (string)result, "Should convert 9.99 to 9,99 €");
result = cc.Convert(9.995, typeof(string), null, CultureInfo.CurrentCulture);
Assert.AreEqual("10,00 €", (string)result, "Should convert 9.995 to 10,00 €");
result = cc.Convert(9.994, typeof(string), null, CultureInfo.CurrentCulture);
Assert.AreEqual("9,99 €", (string)result, "Should convert 9.994 to 9,99 €");
result = cc.Convert(.025, typeof(string), null, CultureInfo.CurrentCulture);
Assert.AreEqual("0,03 €", (string)result, "Should convert .025 to 0,03 €");
result = cc.Convert(1234.567, typeof(string), null, CultureInfo.CurrentCulture);
Assert.AreEqual("1 234,57 €", (string)result, "Should convert 1234.567 to 1 234,57 €");
}
public void Convert_Boundary_ThrowsFormatExceptionForInvalidIFormattable()
{
CurrencyConverter cc = new CurrencyConverter();
object result = cc.Convert(System.DateTime.Now, typeof(string), null, CultureInfo.CurrentCulture);
}
public void Convert_Boundary_ThrowsFormatExceptionForInvalidTypes()
{
CurrencyConverter cc = new CurrencyConverter();
object result = cc.Convert(typeof(string), typeof(string), null, CultureInfo.CurrentCulture);
}
private void Helper(string culture)
{
Thread.CurrentThread.CurrentCulture = new CultureInfo(culture);
Thread.CurrentThread.CurrentCulture = new CultureInfo(culture);
CurrencyConverter cc = new CurrencyConverter();
double input = 9.99;
object result = null;
object output = null;
if (Thread.CurrentThread.CurrentCulture.NumberFormat.CurrencyDecimalDigits > 0)
{
result = cc.Convert(input, typeof(string), null, CultureInfo.CurrentCulture);
output = cc.ConvertBack(result, typeof(double), null, CultureInfo.CurrentCulture);
Assert.AreEqual(input, output, "Input should be Converted and converted back to the same value. Culture = " + culture);
input = 1234.57;
result = cc.Convert(input, typeof(string), null, CultureInfo.CurrentCulture);
output = cc.ConvertBack(result, typeof(double), null, CultureInfo.CurrentCulture);
Assert.AreEqual(input, output, "Input should be Converted and converted back to the same value. Culture = " + culture);
}
else
{
input = 999;
result = cc.Convert(input, typeof(string), null, CultureInfo.CurrentCulture);
output = cc.ConvertBack(result, typeof(double), null, CultureInfo.CurrentCulture);
Assert.AreEqual(input, output, "Input should be Converted and converted back to the same value. Culture = " + culture);
input = 123457;
result = cc.Convert(input, typeof(string), null, CultureInfo.CurrentCulture);
output = cc.ConvertBack(result, typeof(double), null, CultureInfo.CurrentCulture);
Assert.AreEqual(input, output, "Input should be Converted and converted back to the same value. Culture = " + culture);
}
}
public void ConvertBack_Erroneous_ThrowsFormatExceptionForNullValuesAndWithNonNullTargetTypes()
{
CurrencyConverter cc = new CurrencyConverter();
object result = cc.ConvertBack(null, typeof(DateTime), null, CultureInfo.CurrentCulture);
}
public void ConvertBack_Erroneous_ThrowsFormatExceptionForValuesThatCanBeConvertedToDecimal()
{
CurrencyConverter cc = new CurrencyConverter();
object result = cc.ConvertBack("Fail string", typeof(DateTime), null, CultureInfo.CurrentCulture);
}
public void ConvertBack_Erroneous_ThrowsInvalidcastExceptionForInvalidTargetType()
{
CurrencyConverter cc = new CurrencyConverter();
object result = cc.ConvertBack("$10.50", typeof(DateTime), null, CultureInfo.CurrentCulture);
}
public void ConvertBack_Boundary_ReturnsNullForNullableDecimalTargetTypesIfValueIsEmptyString()
{
CurrencyConverter cc = new CurrencyConverter();
object result = cc.ConvertBack(string.Empty, typeof(Decimal?), null, CultureInfo.CurrentCulture);
Assert.AreEqual(null, result, "Should convert empty string to null for Decimal? target type");
}
public void ConvertBack_Boundary_ReturnsNullForReferenceTargetTypesIfValueIsNull()
{
CurrencyConverter cc = new CurrencyConverter();
object result = cc.ConvertBack(null, typeof(string), null, CultureInfo.CurrentCulture);
Assert.AreEqual(null, result, "Should convert null to null for string target type");
}
public void ConvertBack_Normal_ConvertsBackToGenericTypes()
{
CurrencyConverter cc = new CurrencyConverter();
object result = cc.ConvertBack("$9.99", typeof(double?), null, CultureInfo.CurrentCulture);
Assert.AreEqual(9.99, result, "Should convert $9.99 to 9.99");
result = cc.ConvertBack("", typeof(int?), null, CultureInfo.CurrentCulture);
Assert.AreEqual(new int?(), result, "Should convert $0.03 to 0.03");
result = cc.ConvertBack(null, typeof(decimal?), null, CultureInfo.CurrentCulture);
Assert.AreEqual(new decimal?(), result, "Should convert $1,234.57 to 1234.57");
}
public void ConvertBack_Normal_ConvertsBackForCulture()
{
CurrencyConverter cc = new CurrencyConverter();
System.Threading.Thread.CurrentThread.CurrentCulture = new CultureInfo("en-GB");
System.Threading.Thread.CurrentThread.CurrentCulture = new CultureInfo("en-GB");
object result = cc.ConvertBack("£9.99", typeof(double), null, CultureInfo.CurrentCulture);
Assert.AreEqual(9.99, result, "Should convert £9.99 to 9.99");
result = cc.ConvertBack("£0.03", typeof(double), null, CultureInfo.CurrentCulture);
Assert.AreEqual(0.03, result, "Should convert £0.03 to 0.03");
result = cc.ConvertBack("£1,234.57", typeof(double), null, CultureInfo.CurrentCulture);
Assert.AreEqual(1234.57, result, "Should convert £1,234.57 to 1234.57");
System.Threading.Thread.CurrentThread.CurrentCulture = new CultureInfo("fr-FR");
System.Threading.Thread.CurrentThread.CurrentCulture = new CultureInfo("fr-FR");
result = cc.ConvertBack("9,99 €", typeof(double), null, CultureInfo.CurrentCulture);
Assert.AreEqual(9.99, result, "Should convert 9,99 € to 9.99");
result = cc.ConvertBack("0,03 €", typeof(double), null, CultureInfo.CurrentCulture);
Assert.AreEqual(0.03, result, "Should convert 0,03 € to 0.03");
result = cc.ConvertBack("1 234,57 €", typeof(double), null, CultureInfo.CurrentCulture);
Assert.AreEqual(1234.57, result, "Should convert 1 234,57 € to 1234.57");
//All known cultures below.
Helper("");
Helper("af-ZA");
Helper("sq-AL");
Helper("ar-DZ");
Helper("ar-BH");
Helper("ar-EG");
Helper("ar-IQ");
Helper("ar-JO");
Helper("ar-KW");
Helper("ar-LB");
Helper("ar-LY");
Helper("ar-MA");
Helper("ar-OM");
Helper("ar-QA");
Helper("ar-SA");
Helper("ar-SY");
Helper("ar-TN");
Helper("ar-AE");
Helper("ar-YE");
Helper("hy-AM");
Helper("az-Cyrl-AZ");
Helper("az-Latn-AZ");
Helper("eu-ES");
Helper("be-BY");
Helper("bg-BG");
Helper("ca-ES");
Helper("zh-HK");
Helper("zh-MO");
Helper("zh-CN");
Helper("zh-SG");
Helper("zh-TW");
Helper("hr-HR");
Helper("cs-CZ");
Helper("da-DK");
Helper("dv-MV");
Helper("nl-BE");
Helper("nl-NL");
Helper("en-AU");
Helper("en-BZ");
Helper("en-CA");
Helper("en-029");
Helper("en-IE");
Helper("en-JM");
Helper("en-NZ");
Helper("en-PH");
Helper("en-ZA");
Helper("en-TT");
Helper("en-GB");
Helper("en-US");
Helper("en-ZW");
Helper("et-EE");
Helper("fo-FO");
Helper("fa-IR");
Helper("fi-FI");
Helper("fr-BE");
Helper("fr-CA");
Helper("fr-FR");
Helper("fr-LU");
Helper("fr-MC");
Helper("fr-CH");
Helper("gl-ES");
Helper("ka-GE");
Helper("de-AT");
Helper("de-DE");
Helper("de-LI");
Helper("de-LU");
Helper("de-CH");
Helper("el-GR");
Helper("gu-IN");
Helper("he-IL");
Helper("hi-IN");
Helper("hu-HU");
Helper("is-IS");
Helper("id-ID");
Helper("it-IT");
Helper("it-CH");
Helper("ja-JP");
Helper("kn-IN");
Helper("kk-KZ");
Helper("kok-IN");
Helper("ko-KR");
Helper("ky-KG");
Helper("lv-LV");
Helper("lt-LT");
Helper("mk-MK");
Helper("ms-BN");
Helper("ms-MY");
Helper("mr-IN");
Helper("mn-MN");
Helper("nb-NO");
Helper("nn-NO");
Helper("pl-PL");
Helper("pt-BR");
Helper("pt-PT");
Helper("pa-IN");
Helper("ro-RO");
Helper("ru-RU");
Helper("sa-IN");
Helper("sr-Cyrl-CS");
Helper("sr-Latn-CS");
Helper("sk-SK");
Helper("sl-SI");
Helper("es-AR");
Helper("es-BO");
Helper("es-CL");
Helper("es-CO");
Helper("es-CR");
Helper("es-DO");
Helper("es-EC");
Helper("es-SV");
Helper("es-GT");
Helper("es-HN");
Helper("es-MX");
Helper("es-NI");
Helper("es-PA");
Helper("es-PY");
Helper("es-PE");
Helper("es-PR");
Helper("es-ES");
Helper("es-ES_tradnl");
Helper("es-UY");
Helper("es-VE");
Helper("sw-KE");
Helper("sv-FI");
Helper("sv-SE");
Helper("syr-SY");
Helper("ta-IN");
Helper("tt-RU");
Helper("te-IN");
Helper("th-TH");
Helper("tr-TR");
Helper("uk-UA");
Helper("ur-PK");
Helper("uz-Cyrl-UZ");
Helper("uz-Latn-UZ");
Helper("vi-VN");
}
public void ConvertBack_Normal_ConvertsBack()
{
CurrencyConverter cc = new CurrencyConverter();
object result = cc.ConvertBack("$9.99", typeof(double), null, CultureInfo.CurrentCulture);
Assert.AreEqual(9.99, result, "Should convert $9.99 to 9.99");
result = cc.ConvertBack("$0.03", typeof(double), null, CultureInfo.CurrentCulture);
Assert.AreEqual(0.03, result, "Should convert $0.03 to 0.03");
result = cc.ConvertBack("$1,234.57", typeof(double), null, CultureInfo.CurrentCulture);
Assert.AreEqual(1234.57, result, "Should convert $1,234.57 to 1234.57");
}