public void SelectMethodsFromNullTypeThrows()
{
// Fixture setup
var sut = new FactoryMethodQuery();
// Exercise system and verify outcome
Assert.Throws<ArgumentNullException>(() =>
sut.SelectMethods(null));
// Teardown
}
public void SutIsMethodQuery()
{
// Fixture setup
// Exercise system
var sut = new FactoryMethodQuery();
// Verify outcome
Assert.IsAssignableFrom<IMethodQuery>(sut);
// Teardown
}
public void SelectMethodsFromTypeWithParameterOfSameTypeReturnsEmptyResult()
{
// Fixture setup
var type = typeof(TypeWithPseudoFactoryMethod);
var sut = new FactoryMethodQuery();
// Exercise system
var result = sut.SelectMethods(type);
// Verify outcome
Assert.False(result.Any());
// Teardown
}
public void SelectMethodsFromTypeWithNoPublicConstructorReturnsCorrectResult()
{
// Fixture setup
var sut = new FactoryMethodQuery();
var typeWithNoPublicConstructors = typeof(AbstractType);
// Exercise system
var result = sut.SelectMethods(typeWithNoPublicConstructors);
// Verify outcome
Assert.False(result.Any());
// Teardown
}
public void SelectMethodsFromTypeReturnsCorrectResult(Type type)
{
// Fixture setup
var expectedMethods =
from mi in type.GetMethods(BindingFlags.Static | BindingFlags.Public)
where mi.ReturnType == type
let parameters = mi.GetParameters()
orderby parameters.Length ascending
select new StaticMethod(mi) as IMethod;
var sut = new FactoryMethodQuery();
// Exercise system
var result = sut.SelectMethods(type);
// Verify outcome
Assert.True(expectedMethods.SequenceEqual(result));
// Teardown
}