void setRounder()
{
// Prevents an exception from being thrown
if (RoundingAlgorithm == RoundingAlgorithm.None)
{
Formatter.NumberRounder = null;
return;
}
if (this.NumberRounder == NumberBoxNumberRounder.IncrementNumberRounder)
{
IncrementNumberRounder nr = new IncrementNumberRounder();
if (this.IncrementPrecision != 0)
{
nr.Increment = this.IncrementPrecision;
}
nr.RoundingAlgorithm = this.RoundingAlgorithm;
Formatter.NumberRounder = nr;
}
else
{
SignificantDigitsNumberRounder nr = new SignificantDigitsNumberRounder();
if (this.SignificantDigitPrecision != 0)
{
nr.SignificantDigits = this.SignificantDigitPrecision;
}
nr.RoundingAlgorithm = this.RoundingAlgorithm;
Formatter.NumberRounder = nr;
}
}
public void When_UsingVariousSignificantDigits(double value, uint significantDigits, double expected)
{
var sut = new SignificantDigitsNumberRounder();
sut.SignificantDigits = significantDigits;
var rounded = sut.RoundDouble(value);
Assert.AreEqual(expected, rounded);
}
public void When_FormatDoubleUsingSignificantDigitsNumberRounder()
{
var sut = new PercentFormatter();
SignificantDigitsNumberRounder rounder = new SignificantDigitsNumberRounder();
rounder.SignificantDigits = 1;
sut.NumberRounder = rounder;
var formatted = sut.FormatDouble(1.8);
Assert.AreEqual("200.00%", formatted);
}
private void When_UsingARoundingAlgorithmCore(double value, RoundingAlgorithm roundingAlgorithm, double expected)
{
var sut = new SignificantDigitsNumberRounder();
sut.SignificantDigits = 2;
sut.RoundingAlgorithm = roundingAlgorithm;
var rounded = sut.RoundDouble(value);
Assert.AreEqual(expected, rounded);
}
private string GenerateValue_ValueString(string resourceString, double ratingValue)
{
DecimalFormatter formatter = new DecimalFormatter();
SignificantDigitsNumberRounder rounder = new SignificantDigitsNumberRounder();
formatter.NumberRounder = rounder;
string maxRatingString = GetRatingControl().MaxRating.ToString();
int fractionDigits = DetermineFractionDigits(ratingValue);
int sigDigits = DetermineSignificantDigits(ratingValue, fractionDigits);
formatter.FractionDigits = fractionDigits;
rounder.SignificantDigits = (uint)sigDigits;
string ratingString = formatter.Format(ratingValue);
return(StringUtil.FormatString(resourceString, ratingString, maxRatingString));
}
public void When_SignificantDigits_Is_Zero_Then_Should_Throw()
{
var sut = new SignificantDigitsNumberRounder();
Assert.ThrowsException <ArgumentException>(() => sut.SignificantDigits = 0);
}
public void When_RoundingAlgorithm_Is_None_Then_Should_Throw()
{
var sut = new SignificantDigitsNumberRounder();
Assert.ThrowsException <ArgumentException>(() => sut.RoundingAlgorithm = RoundingAlgorithm.None);
}