public void Inequality_null()
{
var ue = new UnitExponents();
Assert.IsFalse(ue.Equals(null));
Assert.IsFalse(object.Equals(ue, null));
}
public void ToStringReflectsDivide()
{
var ueMeter = new UnitExponents(1, 0, 0, 0, 0, 0, 0);
var ueSecond = new UnitExponents(0, 0, 1, 0, 0, 0, 0);
var ueMeterPerSecond = ueMeter / ueSecond;
Assert.AreEqual("m/s", ueMeterPerSecond.ToString());
}
public void WorksWithListContains()
{
var ue = new UnitExponents(1, 1, 1, 1, 1, 1, 1);
var same = new UnitExponents(1, 1, 1, 1, 1, 1, 1);
var different = new UnitExponents(2, 1, 1, 1, 1, 1, 1);
var lst = new System.Collections.Generic.List <UnitExponents>();
lst.Add(different);
Assert.IsFalse(lst.Contains(ue));
lst.Add(same);
Assert.IsTrue(lst.Contains(ue));
}
public void Equality()
{
var ue1 = new UnitExponents(1, 4, 0, 2, -3, -2, 1);
var ue2 = new UnitExponents(1, 4, 0, 2, -3, -2, 1);
var ue3 = new UnitExponents(0, 4, 0, 2, -3, -2, -1);
Assert.AreEqual(ue1, ue2);
Assert.AreNotSame(ue1, ue2);
Assert.IsTrue(ue1 == ue2);
Assert.IsFalse(ue1 == ue3);
Assert.IsTrue(ue1.Equals(ue2));
Assert.IsTrue(object.Equals(ue1, ue2));
}
public void CanDivide()
{
var ue1 = new UnitExponents(1, 0, 0, 2, -3, -2, 1);
var ue2 = new UnitExponents(0, 4, 1, -1, 0, -2, -1);
var ueQuotient = ue1 / ue2;
Assert.AreEqual(1, ueQuotient.Length);
Assert.AreEqual(-4, ueQuotient.Mass);
Assert.AreEqual(-1, ueQuotient.Time);
Assert.AreEqual(3, ueQuotient.ElectricCurrent);
Assert.AreEqual(-3, ueQuotient.Temperature);
Assert.AreEqual(0, ueQuotient.AmountOfSubstance);
Assert.AreEqual(2, ueQuotient.LuminousIntensity);
}
public void CanMultiply()
{
var ue1 = new UnitExponents(1, 0, 0, 2, -3, -2, 1);
var ue2 = new UnitExponents(0, 4, 1, -1, 0, -2, -1);
var ueProduct = ue1 * ue2;
Assert.AreEqual(1, ueProduct.Length);
Assert.AreEqual(4, ueProduct.Mass);
Assert.AreEqual(1, ueProduct.Time);
Assert.AreEqual(1, ueProduct.ElectricCurrent);
Assert.AreEqual(-3, ueProduct.Temperature);
Assert.AreEqual(-4, ueProduct.AmountOfSubstance);
Assert.AreEqual(0, ueProduct.LuminousIntensity);
}
public override string ToString()
{
var nominator = UnitExponents
.Select((multiplicity, idx) => new
{
SIBaseUnit = (SIBaseUnit)idx,
Multiplicity = multiplicity
})
.Where(kvp => kvp.Multiplicity > 0).ToList();
var denominator = UnitExponents
.Select((multiplicity, idx) => new
{
SIBaseUnit = (SIBaseUnit)idx,
Multiplicity = multiplicity
})
.Where(kvp => kvp.Multiplicity < 0)
.ToList();
if (!nominator.Any() && !denominator.Any())
{
return("");
}
var nominatorStrings = new List <string>();
foreach (var unitMultiplicity in nominator)
{
var nominatorUnit = unitMultiplicity.SIBaseUnit.StringRepresentation();
if (unitMultiplicity.Multiplicity > 1)
{
nominatorUnit += "^" + unitMultiplicity.Multiplicity;
}
nominatorStrings.Add(nominatorUnit);
}
var denominatorStrings = new List <string>();
foreach (var unitMultiplicity in denominator)
{
var denominatorUnit = unitMultiplicity.SIBaseUnit.StringRepresentation();
if (unitMultiplicity.Multiplicity.Abs() > 1)
{
denominatorUnit += "^" + unitMultiplicity.Multiplicity.Abs();
}
denominatorStrings.Add(denominatorUnit);
}
var unitString = "";
if (nominatorStrings.Any())
{
unitString += nominatorStrings.Aggregate((a, b) => a + " " + b);
}
else
{
unitString += "1";
}
if (!denominator.Any())
{
return(unitString);
}
unitString += "/";
unitString += denominatorStrings.Count > 1
? $"({denominatorStrings.Aggregate((a, b) => a + " " + b)})"
: denominatorStrings.Single();
return(unitString);
}
public override int GetHashCode()
{
return(UnitExponents?.GetHashCode() ?? 0);
}