public void CreateComplexTypeWith_OneToOne_NavigationProperty()
{
// Arrange
ODataModelBuilder builder = new ODataModelBuilder();
builder.EntityType <Customer>().HasKey(c => c.CustomerId);
ComplexTypeConfiguration <Order> order = builder.ComplexType <Order>();
order.HasRequired(o => o.Customer);
// Act
IEdmModel model = builder.GetEdmModel();
// Assert
IEdmEntityType customerType = Assert.Single(model.SchemaElements.OfType <IEdmEntityType>());
Assert.Equal("Microsoft.AspNet.OData.Test.Builder.TestModels.Customer", customerType.FullName());
Assert.Equal("CustomerId", customerType.DeclaredKey.Single().Name);
Assert.Single(customerType.DeclaredProperties);
Assert.Empty(customerType.NavigationProperties());
IEdmComplexType orderType = Assert.Single(model.SchemaElements.OfType <IEdmComplexType>());
Assert.Equal("Microsoft.AspNet.OData.Test.Builder.TestModels.Order", orderType.FullName());
IEdmNavigationProperty navProperty = Assert.Single(orderType.NavigationProperties());
Assert.Equal(EdmMultiplicity.One, navProperty.TargetMultiplicity());
Assert.Equal("Customer", navProperty.Name);
Assert.True(navProperty.Type.IsEntity());
Assert.Same(customerType, navProperty.Type.Definition);
}