bugfix/RMLNQSQL-171-IEnumerable-based-Contains-operation-results-in-incorrect-SQL-condition

UnitTests/SqlGeneration/IntegrationTests/RMLNQSQL_171.cs

@@ -0,0 +1,69 @@
+// This file is part of the re-linq project (relinq.codeplex.com)
+// Copyright (c) rubicon IT GmbH, www.rubicon.eu
+// 
+// re-linq is free software; you can redistribute it and/or modify it under 
+// the terms of the GNU Lesser General Public License as published by the 
+// Free Software Foundation; either version 2.1 of the License, 
+// or (at your option) any later version.
+// 
+// re-linq is distributed in the hope that it will be useful, 
+// but WITHOUT ANY WARRANTY; without even the implied warranty of 
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 
+// GNU Lesser General Public License for more details.
+// 
+// You should have received a copy of the GNU Lesser General Public License
+// along with re-linq; if not, see http://www.gnu.org/licenses.
+// 
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text.RegularExpressions;
+using NUnit.Framework;
+using Remotion.Linq.SqlBackend.SqlGeneration;
+using Remotion.Linq.SqlBackend.UnitTests.TestDomain;
+
+namespace Remotion.Linq.SqlBackend.UnitTests.SqlGeneration.IntegrationTests
+{
+  [TestFixture]
+  public class RMLNQSQL_171 : SqlBackendIntegrationTestBase
+  {
+    [Test]
+    public void Test_WithBug ()
+    {
+      var kitchenList = new[] { new Company() { ID = 42 } };
+      var kitchenListWithFilter = kitchenList.Where(g => true); //unevaluated sequence results in incorrect query
+
+      CheckQuery (Restaurants.Where(fhc => kitchenListWithFilter.Contains(fhc.CompanyIfAny)),
+          "SELECT [t0].[ID],[t0].[CompanyID] "
+          + "FROM [RestaurantTable] AS [t0] "
+          + "WHERE [t0].[CompanyID] IN (SELECT [t1].[ID] FROM [CompanyTable] AS [t1])");
+    }
+
+    [Test]
+    public void Test_Correct ()
+    {
+      var kitchenList = new[] { 42 };
+      var kitchenListWithFilter = kitchenList.Where(g => true).ToArray(); // evaluated sequence is handled correctly
+
+      CheckQuery (Restaurants.Where(fhc => kitchenListWithFilter.Contains(fhc.CompanyIfAny.ID)),
+          "SELECT [t0].[ID],[t0].[CompanyID] "
+          + "FROM [RestaurantTable] AS [t0] "
+          + "WHERE [t0].[CompanyID] IN (@1)",
+          new CommandParameter("@1", 42));
+    }
+
+    [Test]
+    public void Test_WithBug2 ()
+    {
+      var kitchenList = new[] { 2.2 };
+      var kitchenListWithFilter = kitchenList.Where(g => true);
+
+      CheckQuery (Knives.Where(fhc => kitchenListWithFilter.Contains(fhc.Sharpness)),
+          "SELECT [t0].[ID],[t0].[ClassID],[t0].[Sharpness] "
+          + "FROM [KnifeTable] AS [t0] "
+          + "WHERE [t0].[Sharpness] IN (@1)",
+          new CommandParameter("@1", 2.2));
+    }
+  }
+}