public void SelectConstructorsFromNullTypeThrows()
{
// Fixture setup
var sut = new EnumerableFavoringConstructorQuery();
// Exercise system and verify outcome
Assert.Throws <ArgumentNullException>(() =>
sut.SelectConstructors(null));
// Teardown
}
public void SelectConstructorsFromTypeReturnsFirstMethodThatTakesEnumerableAsArgument(Type type)
{
var sut = new EnumerableFavoringConstructorQuery();
// Exercise system
var result = sut.SelectConstructors(type);
// Verify outcome
var genericParameterType = type.GetGenericArguments().Single();
Assert.True(result.First().Parameters.Any(p => typeof(IEnumerable <>).MakeGenericType(genericParameterType).IsAssignableFrom(p.ParameterType)));
// Teardown
}
public void SelectFromTypeWithNoPublicConstructorReturnsCorrectResult()
{
// Fixture setup
var sut = new EnumerableFavoringConstructorQuery();
var typeWithNoPublicConstructors = typeof(AbstractType);
// Exercise system
var result = sut.SelectConstructors(typeWithNoPublicConstructors);
// Verify outcome
Assert.False(result.Any());
// Teardown
}
public void SelectFromTypeReturnsAllAppropriateResults(Type type)
{
// Fixture setup
var expectedConstructors = from ci in type.GetConstructors()
let parameters = ci.GetParameters()
select new ConstructorMethod(ci) as IMethod;
var sut = new EnumerableFavoringConstructorQuery();
// Exercise system
var result = sut.SelectConstructors(type);
// Verify outcome
Assert.True(expectedConstructors.All(m => result.Any(m.Equals)));
// Teardown
}