public void ConvertToSpecification_returns_null_when_no_viable_strategy(Criterion criterion,
[MockedMetadata] IStrategyForConvertingCriterionToSpecification one,
[MockedMetadata] IStrategyForConvertingCriterionToSpecification two,
[MockedMetadata] IStrategyForConvertingCriterionToSpecification three)
{
// Arrange
var strategies = new [] { one, two, three };
var sut = new StrategyBasedCriterionToSpecificationConverter(strategies);
// Act
var result = sut.ConvertToSpecification(criterion);
// Assert
Assert.That(result, Is.Null);
}
public void ConvertToSpecification_uses_a_viable_strategy(Criterion criterion,
[MockedMetadata] IStrategyForConvertingCriterionToSpecification one,
[MockedMetadata] IStrategyForConvertingCriterionToSpecification two,
[MockedMetadata] IStrategyForConvertingCriterionToSpecification three,
ISpecificationExpression <Ticket> spec)
{
// Arrange
var strategies = new [] { one, two, three };
var sut = new StrategyBasedCriterionToSpecificationConverter(strategies);
Mock.Get(two.GetMetadata()).Setup(x => x.CanConvert(criterion)).Returns(true);
Mock.Get(two).Setup(x => x.ConvertToSpecification(criterion)).Returns(spec);
// Act
var result = sut.ConvertToSpecification(criterion);
// Assert
Assert.That(result, Is.SameAs(spec));
}