public bool TryCreate <TEntity>(IQuerySpecification <TEntity> specification, out IQueryPipe <TEntity> pipe)
where TEntity : class
{
switch (specification)
{
case IIncludePathQuerySpecification <TEntity> includePathSpec:
pipe = new IncludePathQueryPipe <TEntity>(includePathSpec.NavigationPropertyPath);
return(true);
case IIncludePropertyQuerySpecification <TEntity> includePropertySpec when includePropertySpec.IsRoot:
return(TryCreateRoot(includePropertySpec, out pipe));
case IIncludePropertyQuerySpecification <TEntity> includePropertySpec:
return(TryCreateThen(includePropertySpec, out pipe));
}
pipe = null;
return(false);
}
public void Apply_GivenPath_ThenNotNull()
{
var pipe = new IncludePathQueryPipe <Order>(nameof(Order.Customer));
using var fixture = new NorthwindQueryInMemoryFixture <NoopModelCustomizer>();
using var context = fixture.CreateContext();
var queryRoot = context.Set <Order>();
var before = queryRoot;
Assert.NotEmpty(before);
Assert.All(before, order => Assert.Null(order.Customer));
var after = pipe.Apply(queryRoot).ToList();
Assert.NotEmpty(after);
Assert.All(after, order => Assert.NotNull(order.Customer));
}
