public void CreateWithNullContextThrows()
{
var sut = new EnumeratorRelay();
var dummyRequest = new object();
Assert.Throws <ArgumentNullException>(() =>
sut.Create(dummyRequest, null));
}
public void CreateWithNoEnumeratorRequestReturnsCorrectResult(
object request)
{
var sut = new EnumeratorRelay();
var dummyContext = new DelegatingSpecimenContext();
var result = sut.Create(request, dummyContext);
var expectedResult = new NoSpecimen(request);
Assert.Equal(expectedResult, result);
}
public void CreateReturnsCorrectResultWhenContextReturnsNonEnumerableResult(
object response)
{
var request = typeof(IEnumerator <object>);
var context = new DelegatingSpecimenContext
{
OnResolve = r => response
};
var sut = new EnumeratorRelay();
var result = sut.Create(request, context);
var expectedResult = new NoSpecimen(request);
Assert.Equal(expectedResult, result);
}
public void CreateWithEnumeratorRequestReturnsCorrectResult(
Type request,
Type itemType)
{
var expectedRequest =
typeof(IEnumerable <>).MakeGenericType(itemType);
var enumerable = (IList)Activator.CreateInstance(
typeof(List <>).MakeGenericType(itemType));
var context = new DelegatingSpecimenContext
{
OnResolve = r => expectedRequest.Equals(r)
? (object)enumerable
: new NoSpecimen(r)
};
var sut = new EnumeratorRelay();
var result = sut.Create(request, context);
var expectedResult = enumerable.GetEnumerator();
Assert.Equal(expectedResult, result);
}