added a MockDbTransaction object

src/MockDbProvider.Tests/AcceptanceTests.cs

@@ -101,5 +101,19 @@ public void CanGetScalar()
             var result = SUT.DataAccess.GetUserId("abc", "test");
             Assert.AreEqual(15559, result);
         }
+
+        [TestMethod]
+        public void CanCreateTransaction()
+        {
+            var factory = DbProviderFactories.GetFactory("MockDbProvider") as MockDbProviderFactory;
+
+            using (var conn = factory.CreateConnection())
+            {
+                using (var trn = conn.BeginTransaction())
+                {
+                    Assert.IsNotNull(trn);
+                }
+            }
+        }
     }
 }

src/MockDbProvider/MockDbConnection.cs

@@ -17,7 +17,7 @@ internal MockDbConnection(IMockCommandExecution exec)
         }
         protected override DbTransaction BeginDbTransaction(System.Data.IsolationLevel isolationLevel)
         {
-            throw new NotImplementedException();
+            return new MockDbTransaction(isolationLevel, this);
         }
 
         public override void ChangeDatabase(string databaseName)

src/MockDbProvider/MockDbProvider.csproj

@@ -49,6 +49,7 @@
     <Compile Include="IMockCommandExecution.cs" />
     <Compile Include="MockDbDataReader.cs" />
     <Compile Include="MockDbParameterCollection.cs" />
+    <Compile Include="MockDbTransaction.cs" />
     <Compile Include="Syntax\MockCommandBehavior.cs" />
     <Compile Include="MockDbCommandBuilder.cs">
       <SubType>Component</SubType>
@@ -79,4 +80,4 @@
   <Target Name="AfterBuild">
   </Target>
   -->
-</Project>
+</Project>

src/MockDbProvider/MockDbTransaction.cs

@@ -0,0 +1,37 @@
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Data.Common;
+using System.Linq;
+using System.Text;
+
+namespace MockDbProvider
+{
+    public class MockDbTransaction
+        : DbTransaction
+    {
+        private readonly IsolationLevel _isolationLevel;
+
+        public override IsolationLevel IsolationLevel { get { return _isolationLevel; } }
+
+        private readonly DbConnection _dbConnection;
+
+        protected override DbConnection DbConnection { get { return _dbConnection; } }
+
+        public override void Commit()
+        {   // in a mock setting I am not sure how this functionality is mockable
+
+        }
+
+        public override void Rollback()
+        {   // in a mock setting I am not sure how this functionality is mockable
+
+        }
+
+        internal MockDbTransaction(IsolationLevel isolationLevel, DbConnection connection)
+        {
+            _isolationLevel = isolationLevel;
+            _dbConnection = connection;
+        }
+    }
+}