private object[] GroupProducers(IEnumerable <InstanceProducer> producers, int level)
{
return((
from producer in producers
group producer by TypeGeneralizer.MakeTypePartiallyGenericUpToLevel(producer.ServiceType, level)
into resultGroup
select this.BuildProducerGroup(resultGroup.Key, resultGroup.ToArray(), level + 1))
.ToArray());
}
public void MakeTypePartiallyGenericUpToLevel_FourLevelsDeepGenericTypeRequestingLevel2_ReturnsPartlyGenericTypeDefinition()
{
// Arrange
Type suppliedType = typeof(IEnumerable <HashSet <List <Collection <double> > > >);
string expectedType = "IEnumerable<HashSet<List<T>>>";
// Act
Type actualType = TypeGeneralizer.MakeTypePartiallyGenericUpToLevel(suppliedType, 2);
// Assert
Assert.AreEqual(expectedType, actualType.ToFriendlyName());
}
public void MakeTypePartiallyGenericUpToLevel_OneLevelDeepGenericTypeRequestingLevel1_ReturnsThatType()
{
// Arrange
Type suppliedType = typeof(IEnumerable <int>);
Type expectedType = typeof(IEnumerable <int>);
// Act
Type actualType = TypeGeneralizer.MakeTypePartiallyGenericUpToLevel(suppliedType, 1);
// Assert
Assert.AreEqual(expectedType.ToFriendlyName(), actualType.ToFriendlyName());
}
public void MakeTypePartiallyGenericUpToLevel_GenericTypeWithLevelZero_ReturnsAGenericTypeDefinition()
{
// Arrange
Type suppliedType = typeof(IEnumerable <int>);
Type expectedType = typeof(IEnumerable <>);
// Act
Type actualType = TypeGeneralizer.MakeTypePartiallyGenericUpToLevel(suppliedType, 0);
// Assert
Assert.AreEqual(expectedType.ToFriendlyName(), actualType.ToFriendlyName());
}
public void MakeTypePartiallyGenericUpToLevel_NonGenericType_ReturnsTheSuppliedType()
{
// Arrange
Type suppliedType = typeof(IDisposable);
Type expectedType = typeof(IDisposable);
// Act
Type actualType = TypeGeneralizer.MakeTypePartiallyGenericUpToLevel(suppliedType, 0);
// Assert
Assert.AreEqual(expectedType, actualType);
}
public void MakeTypePartiallyGenericUpToLevel_FourLevelsDeepGenericTypeRequestingLevel4_ReturnsThatType()
{
// Arrange
Type suppliedType = typeof(IEnumerable <HashSet <List <Collection <double> > > >);
Type expectedType = typeof(IEnumerable <HashSet <List <Collection <double> > > >);
// Act
Type actualType = TypeGeneralizer.MakeTypePartiallyGenericUpToLevel(suppliedType, 4);
// Assert
Assert.AreEqual(expectedType, actualType);
}
public void MakeTypePartiallyGenericUpToLevel_FourLevelsDeepGenericTypeWithMultipleBranchesRequestingLevel3_ReturnsPartlyGenericTypeDefinition()
{
// Arrange
Type suppliedType = typeof(IEnumerable <HashSet <List <Tuple <double, int> > > >);
string expectedType = "IEnumerable<HashSet<List<Tuple<T1, T2>>>>";
// Act
Type actualType = TypeGeneralizer.MakeTypePartiallyGenericUpToLevel(suppliedType, 3);
// Assert
Assert.AreEqual(expectedType, actualType.ToFriendlyName());
}
public void MakeTypePartiallyGenericUpToLevel_RequestingLevel0OnTypeWithGenericConstraint_ReturnsGenericTypeDefinition()
{
// Arrange
Type inputType = typeof(IQueryHandler <ConstraintQuery, IEnumerable <int> >);
int nestingLevel = 0;
Type expectedType = typeof(IQueryHandler <,>);
// Act
Type actualType = TypeGeneralizer.MakeTypePartiallyGenericUpToLevel(inputType, nestingLevel);
// Assert
Assert.AreEqual(expectedType, actualType);
}
public void MakeTypePartiallyGenericUpToLevel_RequestingLevelOneOnTypeWithGenericConstraint_SkipsLevelOne()
{
// Arrange
Type inputType = typeof(IQueryHandler <ConstraintQuery, IEnumerable <int> >);
int nestingLevel = 1;
Type expectedType = typeof(IQueryHandler <ConstraintQuery, IEnumerable <int> >);
// Act
Type actualType = TypeGeneralizer.MakeTypePartiallyGenericUpToLevel(inputType, nestingLevel);
// Assert
Assert.AreEqual(expectedType, actualType, @"
Since ConstraintQuery implements IQuery<IEnumerable<int>>, it is impossible to
build a IQueryHandler<ConstraintQuery, IEnumerable<T>> since IEnumerable<T> is
not an IEnumerable<int>. We should therefore skip that level and return a level
two type.");
}