fixed issue #175

Author: Thomas Grassauer

src/ServiceStack.OrmLite.SqlServerTests/SqlServerExpressionVisitorQueryTest.cs

@@ -107,14 +107,15 @@ public void test_if_and_works_with_nullable_parameter()
                 db.CreateTable<TestEntity>(true);
                 db.Insert(new TestEntity
                 {
-                    Id = 2000,
                     Foo = this.RandomString(16),
                     Bar = this.RandomString(16),
                     Baz = this.RandomDecimal()
                 });
 
+                var id = (int)db.GetLastInsertId();
+
                 var ev = OrmLiteConfig.DialectProvider.ExpressionVisitor<TestEntity>();
-                ev.Where(e => e.Id == 2000);
+                ev.Where(e => e.Id == id);
                 int? i = null;
                 ev.And(e => e.NullInt == i);
 

src/ServiceStack.OrmLite/Expressions/SqlExpressionVisitor.cs

@@ -737,8 +737,8 @@ protected virtual object VisitBinary(BinaryExpression b)
 
             }
 
-            if (operand == "=" && right.ToString() == "null") operand = "is";
-            else if (operand == "<>" && right.ToString() == "null") operand = "is not";
+            if (operand == "=" && right.ToString().Equals("null", StringComparison.InvariantCultureIgnoreCase)) operand = "is";
+            else if (operand == "<>" && right.ToString().Equals("null", StringComparison.InvariantCultureIgnoreCase)) operand = "is not";
 
             switch (operand)
             {

tests/ServiceStack.OrmLite.Tests/ForeignKeyAttributeTests.cs

@@ -11,6 +11,15 @@ public void Setup()
         {
             using (var dbConn = ConnectionString.OpenDbConnection())
             {
+                dbConn.DropTable<TypeWithOnDeleteAndUpdateCascade>();
+                dbConn.DropTable<TypeWithOnDeleteSetNull>();
+                dbConn.DropTable<TypeWithOnDeleteSetDefault>();
+                dbConn.DropTable<TypeWithOnDeleteRestrict>();
+                dbConn.DropTable<TypeWithOnDeleteNoAction>();
+                dbConn.DropTable<TypeWithOnDeleteCascade>();
+                dbConn.DropTable<TypeWithSimpleForeignKey>();
+                dbConn.DropTable<ReferencedType>();
+
                 dbConn.DropAndCreateTable<ReferencedType>();
             }
         }

tests/ServiceStack.OrmLite.Tests/OrmLiteTestBase.cs

@@ -14,7 +14,8 @@ public class Config
         public static string SqliteFileDir = "~/App_Data/".MapAbsolutePath();
         public static string SqliteFileDb = "~/App_Data/db.sqlite".MapAbsolutePath();
         public static string SqlServerDb = "~/App_Data/Database1.mdf".MapAbsolutePath();
-        public static string SqlServerBuildDb = "Server=pc;Database=test;User Id=pc;Password=pc;";
+        //public static string SqlServerBuildDb = "Server=pc;Database=test;User Id=pc;Password=pc;";
+        public static string SqlServerBuildDb = "Data Source=localhost;Initial Catalog=TestDb;Integrated Security=SSPI;Connect Timeout=120;MultipleActiveResultSets=True";
 
         public static IOrmLiteDialectProvider DefaultProvider = SqlServerDialect.Provider;
         public static string DefaultConnection = SqlServerBuildDb;