public void ExpressionTreeQueryTest()
{
//arrange
var target = new ExpressionTree();
IQueryable <Products> expected1;
IQueryable <Products> expected2;
IQueryable <Products> actual;
//act
target.ExpressionTreeQuery(
out expected1, out expected2, out actual);
//assert
expected1.ToList().ToExpectedObject().ShouldEqual(actual.ToList());
expected2.ToList().ToExpectedObject().ShouldEqual(actual.ToList());
}