Client 8.0.0 - Projection fails for navigation property being null

[uffelauesen]

Projection with a navigation property being null throws System.ArgumentNullException: Value cannot be null. (Parameter 'source')

Assemblies affected

This bug were introduced in ODL Client 8.0.0.rc.1 and is still present in ODL 8.0.0. ODL Client 8.0.0.preview.3 and earlier does not have this issue.

Reproduce steps

Imagine a model with a Person having a navigation property Spouse of type Person that can be null. Then the error can be reproduced with this code (provided that you have people without spouses in your store)...

            var q = from p in ctx.People
                    where p.Spouse == null
                    select new Person
                    {
                        ID = p.ID,
                        Spouse = p.Spouse
                    };

            var results = q.ToList();

Expected result

Results are materialized correctly having null as navigation property value.

Actual result

An exception is thrown when the response is materialized...

System.ArgumentNullException: Value cannot be null. (Parameter 'source')

ThrowHelper.ThrowArgumentNullException(ExceptionArgument argument)

ODataEntityMaterializer.ProjectionValueForPath(MaterializerEntry entry, Type expectedType, ProjectionPath path)
ODataEntityMaterializerInvoker.ProjectionValueForPath(Object materializer, Object entry, Type expectedType, Object path)
lambda_method3885(Closure, Object, Object, Type)
ODataEntityMaterializer.ProjectionInitializeEntity(ODataEntityMaterializer materializer, MaterializerEntry entry, Type expectedType, Type resultType, String[] properties, Func4[] propertyValues) lambda_method3886(Closure, Object, Object, Type) ProjectionPlan.Run(ODataEntityMaterializer materializer, ODataResource entry, Type expectedType) ODataEntityMaterializer.ReadImplementation() ObjectMaterializer.MoveNextInternal() ObjectMaterializer.MoveNext() Enumerable.CastIterator[TResult](IEnumerable source)+MoveNext() List1.ctor(IEnumerable1 collection) Enumerable.ToList[TSource](IEnumerable1 source)

Additional detail

[habbes]

Seems like the issue was introduced by this PR: #2916