public void Inverse_1overA_ReturnsA()
{
// Arrange
IDimension a = CreateStubDimension("a");
CompoundDimension dimension = new CompoundDimension(Dimsensionless.Instance, a);
// Act
IDimension result = dimension.Inverse();
// Assert
Assert.AreSame(a, result);
}
private void UpdateDimension(IDimension dimension)
{
if (dimension is CompoundDimension)
{
_dimension = (CompoundDimension)dimension;
}
else
{
_dimension = new CompoundDimension(dimension);
}
}
public void Divide_Aover1_ReturnsA()
{
// Arrange
IDimension a = CreateStubDimension("a");
CompoundDimension dimension = new CompoundDimension(a);
// Act
IDimension result = dimension.Divide(Dimsensionless.Instance);
// Assert
Assert.AreSame(a, result);
}
public void Inverse_AoverB_ReturnsBoverA()
{
// Arrange
IDimension a = CreateStubDimension("a");
IDimension b = CreateStubDimension("b");
CompoundDimension dimension = new CompoundDimension(a, b);
// Act
IDimension result = dimension.Inverse();
// Assert
Assert.AreEqual(new CompoundDimension(b, a), result);
}
public void Divide_AoverB_ReturnsCompoundUnit()
{
// Arrange
IDimension a = CreateStubDimension("a");
IDimension b = CreateStubDimension("b");
CompoundDimension dimension = new CompoundDimension(a);
// Act
IDimension result = dimension.Divide(b);
// Assert
Assert.IsInstanceOf(typeof(CompoundDimension), result);
}
public void Multiply_AxB_ReturnsCompoundUnit()
{
// Arrange
IDimension a = CreateStubDimension("a");
IDimension b = CreateStubDimension("b");
CompoundDimension unit = new CompoundDimension(a);
// Act
IDimension result = unit.Multiply(b);
// Assert
Assert.IsInstanceOf(typeof(CompoundDimension), result);
}
public void Multiply_AoverBx1_ReturnsSelf()
{
// Arrange
IDimension a = CreateStubDimension("a");
IDimension b = CreateStubDimension("b");
CompoundDimension dimension = new CompoundDimension(a, b);
// Act
IDimension result = dimension.Multiply(Dimsensionless.Instance);
// Assert
Assert.AreSame(dimension, result);
}
public void Multiply_AxBsquared_EqualsAxAxBxB()
{
// Arrange
IDimension a = CreateStubDimension("a");
IDimension b = CreateStubDimension("b");
CompoundDimension unit = new CompoundDimension(a);
CompoundDimension axb = (CompoundDimension)unit.Multiply(b);
// Act
IDimension axbsquared = axb.Multiply(axb);
IDimension axaxbxb = unit.Multiply(a, b, b);
// Assert
Assert.AreEqual(axaxbxb, axbsquared);
}
public void Multiply_AoverBxB_ReturnsA()
{
// Arrange
IDimension a = CreateStubDimension("a");
IDimension b = CreateStubDimension("b");
CompoundDimension unit = new CompoundDimension(a);
unit = (CompoundDimension)unit.Divide(b);
// Act
IDimension result = unit.Multiply(b);
// Assert
Assert.AreSame(a, result);
}
