public void CreateFrom_IUnitSystem_AccessesDimensionsAndUnits()
{
// Arrange
const int dimensions = 3;
const int unitsperdimension = 3;
IDimension[] dimensionArray = new []
{
CreateStubDimension(),
CreateStubDimension(),
CreateStubDimension()
};
var mockSystem = new Mock <IUnitSystem>();
mockSystem.Setup(x => x.Dimensions)
.Returns(dimensionArray);
mockSystem.Setup(x => x.GetBaseUnit(It.IsAny <IDimension>()))
.Returns <IDimension>(x => CreateStubUnit("", x));
mockSystem.Setup(x => x.GetSupportedUnits(It.IsAny <IDimension>()))
.Returns <IDimension>(x => Enumerable.Repeat(CreateStubUnit("", x), unitsperdimension));
// Act
UnitSystem system = UnitSystem.CreateFrom(mockSystem.Object);
// Assert
Assert.NotNull(system);
mockSystem.Verify(x => x.Dimensions, Times.AtLeastOnce());
mockSystem.Verify(x => x.GetBaseUnit(It.IsAny <IDimension>()), Times.AtLeast(dimensions));
mockSystem.Verify(x => x.GetSupportedUnits(It.IsAny <IDimension>()), Times.AtLeast(dimensions));
}