// ReSharper disable InconsistentNaming
private string BuildRoundingExpression(FormatNumberTO formatNumberTO)
// ReSharper restore InconsistentNaming
{
string expression;
enRoundingType roundingType = formatNumberTO.GetRoundingTypeEnum();
if(roundingType == enRoundingType.Normal)
{
expression = "round({0}, {1})";
}
else if(roundingType == enRoundingType.Up)
{
expression = "roundup({0}, {1})";
}
else if(roundingType == enRoundingType.Down)
{
expression = "rounddown({0}, {1})";
}
else
{
expression = "{0}";
}
expression = string.Format(expression, formatNumberTO.Number, formatNumberTO.RoundingDecimalPlaces);
return expression;
}
// ReSharper restore InconsistentNaming
#endregion Class Members
#region Methods
/// <summary>
/// Formats a number.
/// </summary>
/// <param name="formatNumberTO">The information on how to format the number.</param>
/// <returns></returns>
/// <exception cref="System.ArgumentNullException">formatNumberTO</exception>
// ReSharper disable InconsistentNaming
public string Format(FormatNumberTO formatNumberTO)
// ReSharper restore InconsistentNaming
{
if(formatNumberTO == null)
{
throw new ArgumentNullException("formatNumberTO");
}
decimal tmp;
if(!formatNumberTO.Number.IsNumeric(out tmp))
{
throw new InvalidOperationException("Unable to format '" + formatNumberTO.Number + "' because it isn't a number.");
}
if(formatNumberTO.RoundingDecimalPlaces < -14 || formatNumberTO.RoundingDecimalPlaces > 14)
{
throw new InvalidOperationException("Rounding decimal places must be between -14 and 14.");
}
if(formatNumberTO.AdjustDecimalPlaces && (formatNumberTO.DecimalPlacesToShow < -14 || formatNumberTO.DecimalPlacesToShow > 14))
{
throw new InvalidOperationException("Decimal places to show must be less between -14 than 14.");
}
string result = Round(formatNumberTO);
result = AdjustDecimalPlaces(result, formatNumberTO.AdjustDecimalPlaces, formatNumberTO.DecimalPlacesToShow);
return result;
}
public void Format_Given_0_Where_RoundingDecimalPlacesAreNegative_Expected_0()
{
FormatNumberTO formatNumberTO = new FormatNumberTO("0", enRoundingType.Normal, -1, false, 0);
Dev2NumberFormatter dev2NumberFormatter = new Dev2NumberFormatter();
string actual = dev2NumberFormatter.Format(formatNumberTO);
double expectedDouble = 0d;
string expected = expectedDouble.ToString();
Assert.AreEqual(expected, actual);
}
public void Format_Given_PositiveNumber_Where_RoundingTypeIsUpWithNoDecimalPlaces_Expected_RoundedUp()
{
FormatNumberTO formatNumberTO = new FormatNumberTO("123.92345", enRoundingType.Up, 0, false, 0);
Dev2NumberFormatter dev2NumberFormatter = new Dev2NumberFormatter();
string actual = dev2NumberFormatter.Format(formatNumberTO);
const double expectedDouble = 124d;
string expected = expectedDouble.ToString(CultureInfo.InvariantCulture);
Assert.AreEqual(expected, actual);
}
public void Format_Where_NumberStringIsntANumber_Expected_InvalidOperation()
{
FormatNumberTO formatNumberTO = new FormatNumberTO("ABC", enRoundingType.None, 0, false, 0);
Dev2NumberFormatter dev2NumberFormatter = new Dev2NumberFormatter();
dev2NumberFormatter.Format(formatNumberTO);
}
public void Format_Given_NegativeNumber_Where_RoundingDecimalPlacesArelessThanWhatIsBeingAdjusted_Expected_RoundingHappensThenDecimalsAreAdded()
{
FormatNumberTO formatNumberTO = new FormatNumberTO("-123.12395678911235", enRoundingType.Normal, 3, true, 4);
Dev2NumberFormatter dev2NumberFormatter = new Dev2NumberFormatter();
string actual = dev2NumberFormatter.Format(formatNumberTO);
double expectedDouble = -123.124d;
string expected = expectedDouble.ToString("###.###0");
Assert.AreEqual(expected, actual);
}
public void Format_Given_NegativeNumberGreaterThanNegative1000_Where_AdjustDecimalPlacesByNegative3_Expected_0()
{
FormatNumberTO formatNumberTO = new FormatNumberTO("-1.12345678911235", enRoundingType.None, 0, true, -3);
Dev2NumberFormatter dev2NumberFormatter = new Dev2NumberFormatter();
string actual = dev2NumberFormatter.Format(formatNumberTO);
double expectedDouble = 0d;
string expected = expectedDouble.ToString();
Assert.AreEqual(expected, actual);
}
public void Format_Given_NegativeNumberWithLessThanThan5DecimalPlaces_Where_AdjustDecimalPlacesBy5_Expected_2DecimalPlaces()
{
FormatNumberTO formatNumberTO = new FormatNumberTO("-123.123", enRoundingType.None, 0, true, 5);
Dev2NumberFormatter dev2NumberFormatter = new Dev2NumberFormatter();
string actual = dev2NumberFormatter.Format(formatNumberTO);
double expectedDouble = -123.12300d;
string expected = expectedDouble.ToString("###.###00");
Assert.AreEqual(expected, actual);
}
public void Format_Where_RoundingDecimalPlacesLessThanNegative14_Expected_InvalidOperation()
{
FormatNumberTO formatNumberTO = new FormatNumberTO("123.123", enRoundingType.None, -15, false, 0);
Dev2NumberFormatter dev2NumberFormatter = new Dev2NumberFormatter();
dev2NumberFormatter.Format(formatNumberTO);
}
public void Format_Where_NumberStringWithSpecialChars_Expected_InvalidOperation()
{
FormatNumberTO formatNumberTO = new FormatNumberTO("!@$%*&*(^(^))((.{}:?<>", enRoundingType.None, 0, false, 0);
Dev2NumberFormatter dev2NumberFormatter = new Dev2NumberFormatter();
dev2NumberFormatter.Format(formatNumberTO);
}
public void Format_Given_PositiveNumberLessThan1000_Where_AdjustDecimalPlacesByNegative3_Expected_0()
{
FormatNumberTO formatNumberTO = new FormatNumberTO("1.12345678911235", enRoundingType.None, 0, true, -3);
Dev2NumberFormatter dev2NumberFormatter = new Dev2NumberFormatter();
string actual = dev2NumberFormatter.Format(formatNumberTO);
const double expectedDouble = 0d;
string expected = expectedDouble.ToString(CultureInfo.InvariantCulture);
Assert.AreEqual(expected, actual);
}
public void Format_Given_PositiveNumber_Where_AdjustDecimalPlacesByNegative1_Expected_AnyValuBelow10IsDropped()
{
FormatNumberTO formatNumberTO = new FormatNumberTO("123.12345678911235", enRoundingType.None, 0, true, -1);
Dev2NumberFormatter dev2NumberFormatter = new Dev2NumberFormatter();
string actual = dev2NumberFormatter.Format(formatNumberTO);
const double expectedDouble = 12d;
string expected = expectedDouble.ToString(CultureInfo.InvariantCulture);
Assert.AreEqual(expected, actual);
}
public void Format_Given_0_Where_RoundingTypeIsDown_Expected_0()
{
FormatNumberTO formatNumberTO = new FormatNumberTO("0", enRoundingType.Down, 0, false, 0);
Dev2NumberFormatter dev2NumberFormatter = new Dev2NumberFormatter();
string actual = dev2NumberFormatter.Format(formatNumberTO);
const double expectedDouble = 0d;
string expected = expectedDouble.ToString(CultureInfo.InvariantCulture);
Assert.AreEqual(expected, actual);
}
public void Format_Given_NegativeNumber_Where_RoundingTypeIsDownWithDecimalPlaces_Expected_RoundedDown()
{
FormatNumberTO formatNumberTO = new FormatNumberTO("-123.12345", enRoundingType.Down, 2, false, 0);
Dev2NumberFormatter dev2NumberFormatter = new Dev2NumberFormatter();
string actual = dev2NumberFormatter.Format(formatNumberTO);
const double expectedDouble = -123.12d;
string expected = expectedDouble.ToString(CultureInfo.InvariantCulture);
Assert.AreEqual(expected, actual);
}
public void Format_Given_PositiveNumber_Where_AdjustDecimalPlacesBy0_Expected_DecimalsAreDropped()
{
FormatNumberTO formatNumberTO = new FormatNumberTO("123.12345678911235", enRoundingType.None, 0, true, 0);
Dev2NumberFormatter dev2NumberFormatter = new Dev2NumberFormatter();
string actual = dev2NumberFormatter.Format(formatNumberTO);
double expectedDouble = 123d;
string expected = expectedDouble.ToString();
Assert.AreEqual(expected, actual);
}
public void Format_Given_NegativeNumberNumberWithMoreThan2DecimalPlaces_Where_AdjustDecimalPlacesBy2_Expected_2DecimalPlaces()
{
FormatNumberTO formatNumberTO = new FormatNumberTO("-123.12345678911235", enRoundingType.None, 0, true, 2);
Dev2NumberFormatter dev2NumberFormatter = new Dev2NumberFormatter();
string actual = dev2NumberFormatter.Format(formatNumberTO);
double expectedDouble = -123.12d;
string expected = expectedDouble.ToString();
Assert.AreEqual(expected, actual);
}
public void Format_Where_DecimalPlacesToShowGreaterThanNegative14_Expected_InvalidOperation()
{
FormatNumberTO formatNumberTO = new FormatNumberTO("123.123", enRoundingType.None, 0, true, -15);
Dev2NumberFormatter dev2NumberFormatter = new Dev2NumberFormatter();
dev2NumberFormatter.Format(formatNumberTO);
}
public void Format_Given_NegativeNumber_Where_AdjustDecimalPlacesByNegative1_Expected_AnyValuAboveNagative10IsDropped()
{
FormatNumberTO formatNumberTO = new FormatNumberTO("-123.12345678911235", enRoundingType.None, 0, true, -1);
Dev2NumberFormatter dev2NumberFormatter = new Dev2NumberFormatter();
string actual = dev2NumberFormatter.Format(formatNumberTO);
double expectedDouble = -12d;
string expected = expectedDouble.ToString();
Assert.AreEqual(expected, actual);
}
public void Format_Given_NegativeNumber_Where_RoundingTypeIsNoneAndAdjustDecimalsIsFalse_Expected_RawNumberBack()
{
FormatNumberTO formatNumberTO = new FormatNumberTO("-123.123456", enRoundingType.None, 0, false, 0);
Dev2NumberFormatter dev2NumberFormatter = new Dev2NumberFormatter();
string actual = dev2NumberFormatter.Format(formatNumberTO);
Assert.AreEqual(formatNumberTO.Number, actual);
}
public void Format_Given_PositiveNumber_Where_RoundingDecimalPlacesAreMoreThanWhatIsBeingAdjusted_Expected_RoundingHappensThenDecimalsAreDropped()
{
FormatNumberTO formatNumberTO = new FormatNumberTO("123.12395678911235", enRoundingType.Normal, 4, true, 3);
Dev2NumberFormatter dev2NumberFormatter = new Dev2NumberFormatter();
string actual = dev2NumberFormatter.Format(formatNumberTO);
double expectedDouble = 123.124d;
string expected = expectedDouble.ToString();
Assert.AreEqual(expected, actual);
}
public void Format_Given_NegativeNumberWithDecimalsThatShouldRoundUp_Where_RoundingTypeIsNormalWithNoDecimalPlaces_Expected_RoundedUp()
{
FormatNumberTO formatNumberTO = new FormatNumberTO("123.92345", enRoundingType.Normal, 0, false, 0);
Dev2NumberFormatter dev2NumberFormatter = new Dev2NumberFormatter();
string actual = dev2NumberFormatter.Format(formatNumberTO);
double expectedDouble = 124;
string expected = expectedDouble.ToString();
Assert.AreEqual(expected, actual);
}
public void Format_Given_0_Where_RoundingDecimalPlacesAreLessThanWhatIsBeingAdjusted_Expected_0()
{
FormatNumberTO formatNumberTO = new FormatNumberTO("0", enRoundingType.Normal, 3, true, 4);
Dev2NumberFormatter dev2NumberFormatter = new Dev2NumberFormatter();
string actual = dev2NumberFormatter.Format(formatNumberTO);
double expectedDouble = 0d;
string expected = expectedDouble.ToString("0.0000");
Assert.AreEqual(expected, actual);
}
public void Format_Given_PositiveNumber_Where_RoundingTypeIsUpWithDecimalPlaces_Expected_RoundedUp()
{
FormatNumberTO formatNumberTO = new FormatNumberTO("123.12345", enRoundingType.Up, 2, false, 0);
Dev2NumberFormatter dev2NumberFormatter = new Dev2NumberFormatter();
string actual = dev2NumberFormatter.Format(formatNumberTO);
double expectedDouble = 123.13d;
string expected = expectedDouble.ToString();
Assert.AreEqual(expected, actual);
}
// ReSharper disable InconsistentNaming
private string Round(FormatNumberTO formatNumberTO)
// ReSharper restore InconsistentNaming
{
string error;
string result;
_functionEvaluator.TryEvaluateFunction(BuildRoundingExpression(formatNumberTO), out result, out error);
if(!string.IsNullOrWhiteSpace(error))
{
throw new InvalidOperationException(error);
}
return result;
}
public void Format_Given_NegativeNumber_Where_RoundingTypeIsDownWithNoDecimalPlaces_Expected_RoundedDown()
{
FormatNumberTO formatNumberTO = new FormatNumberTO("-123.92345", enRoundingType.Down, 0, false, 0);
Dev2NumberFormatter dev2NumberFormatter = new Dev2NumberFormatter();
string actual = dev2NumberFormatter.Format(formatNumberTO);
double expectedDouble = -123d;
string expected = expectedDouble.ToString();
Assert.AreEqual(expected, actual);
}
public void Format_Given_NegativeNumber_Where_RoundingDecimalPlacesAreNegative_Expected_RoundingToMultiplesOf10ForEveryNegative()
{
FormatNumberTO formatNumberTO = new FormatNumberTO("-123.12345", enRoundingType.Normal, -1, false, 0);
Dev2NumberFormatter dev2NumberFormatter = new Dev2NumberFormatter();
string actual = dev2NumberFormatter.Format(formatNumberTO);
double expectedDouble = -120d;
string expected = expectedDouble.ToString();
Assert.AreEqual(expected, actual);
}
public void Format_Given_PositiveNumberWithDecimalsThatShouldRoundUp_Where_RoundingTypeIsNormalWithDecimalPlaces_Expected_RoundedUp()
{
FormatNumberTO formatNumberTO = new FormatNumberTO("123.12645", enRoundingType.Normal, 2, false, 0);
Dev2NumberFormatter dev2NumberFormatter = new Dev2NumberFormatter();
string actual = dev2NumberFormatter.Format(formatNumberTO);
const double expectedDouble = 123.13d;
string expected = expectedDouble.ToString(CultureInfo.InvariantCulture);
Assert.AreEqual(expected, actual);
}
