public void VisitNamedExpression()
{
var innerExpression = Expression.Constant(0);
var namedExpression = new NamedExpression("Name", innerExpression);
var fakeResolvedInnerExpression = new SqlLiteralExpression(1);
_resolverMock.Expect(mock => mock.ResolveConstantExpression(innerExpression)).Return(fakeResolvedInnerExpression);
var fakeCombinedExpression = new NamedExpression("Name2", Expression.Constant(2));
_namedExpressionCombinerMock
.Expect(mock => mock.ProcessNames(Arg <NamedExpression> .Matches(e => e.Name == "Name" && e.Expression == fakeResolvedInnerExpression)))
.Return(fakeCombinedExpression);
// Result is revisited.
var fakeResolvedInnerExpression2 = new SqlLiteralExpression(3);
_resolverMock
.Expect(mock => mock.ResolveConstantExpression((ConstantExpression)fakeCombinedExpression.Expression))
.Return(fakeResolvedInnerExpression2);
_namedExpressionCombinerMock
.Expect(mock => mock.ProcessNames(Arg <NamedExpression> .Matches(e => e.Name == "Name2" && e.Expression == fakeResolvedInnerExpression2)))
.Return(null)
.WhenCalled(mi => mi.ReturnValue = mi.Arguments[0]);
var result = _visitor.Visit(namedExpression);
_resolverMock.VerifyAllExpectations();
_namedExpressionCombinerMock.VerifyAllExpectations();
Assert.That(result, Is.TypeOf <NamedExpression> ());
Assert.That(((NamedExpression)result).Name, Is.EqualTo("Name2"));
Assert.That(((NamedExpression)result).Expression, Is.SameAs(fakeResolvedInnerExpression2));
}
