public void AddPart_OneByOne_SaveProportions()
{
// arrange
var soil = new Soil();
// act
soil.Add <Sand>(2);
soil.Add <Turf>(4);
soil.Add <Peat>(2);
// assert
Assert.AreEqual(2, soil[SoilParts.Sand]);
Assert.AreEqual(4, soil[SoilParts.Turf]);
Assert.AreEqual(2, soil[SoilParts.Peat]);
}
public void AddPart_WithNegativeCount_Throws()
{
// arrange
var soil = new Soil()
{
Soil.Part <Sand>(1)
};
// act
soil.Add <Sand>(-1);
}
public void AddPart_AfterEndEditing_ReduceProportions()
{
// arrange
var soil = new Soil()
{
Soil.Part <Sand>(1)
};
// act
soil.EndEdit();
soil.Add <Sand>(1);
// assert
Assert.AreEqual(1, soil.PartsOf <Sand>());
}
public void AddPart_AfterBeginEditing_ChangesProportions()
{
// arrange
var soil = new Soil()
{
Soil.Part <Sand>(1), Soil.Part <Turf>(3)
};
// act
soil.EndEdit();
soil.BeginEdit();
soil.Add <Sand>(2);
// assert
Assert.AreEqual(3, soil[SoilParts.Sand]);
Assert.AreEqual(3, soil[SoilParts.Turf]);
}
public void AddPart_WithZeroCount_ChangesNothing()
{
// arrange
var soil = new Soil()
{
Soil.Part <Sand>(1)
};
var copy = new Soil()
{
Soil.Part <Sand>(1)
};
// act
soil.Add <Turf>(0);
// assert
Assert.AreEqual(copy, soil);
}