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);
}
}