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UnusedLetImpactsQueryTest test to reproduce let impacts query bug #401

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UnusedLetImpactsQueryTest test to reproduce let impacts query bug #401

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17 changes: 17 additions & 0 deletions Orm/Xtensive.Orm.Tests/Linq/InTest.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -583,6 +583,23 @@ public void CompiledInTest()
Assert.AreEqual("Leonie", result2[0]);
}

[Test]
public void UnusedLetImpactsQueryTest()
{
var allIds = Session.Query.All<Invoice>().Select(o => o.InvoiceId).ToArray();
var existingIds = allIds.Take(2).ToArray();
var nonExistingIds = new[] { allIds.Max() + 1 };
var count1 = (from invoice in Session.Query.All<Invoice>()
where invoice.InvoiceId.In(existingIds)
select invoice).Count();
var count2 = (from invoice in Session.Query.All<Invoice>()
let foo = invoice.InvoiceId.In(nonExistingIds)
where invoice.InvoiceId.In(existingIds)
select invoice).Count();
Assert.Greater(count1, 0);
Assert.Greater(count2, 0);
}

private IEnumerable<Customer> GetCustomers(params string[] customerNames)
{
return Session.Query.Execute(qe => qe.All<Customer>().Where(customer => customer.FirstName.In(customerNames)));
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