Reset the open transaction count on Connection#reset.

src/connection.coffee

@@ -847,7 +847,8 @@ set xact_abort #{xact_abort}"""
       true
 
   reset: (callback) =>
-    request = new Request(@getInitialSql(), (err, rowCount, rows) ->
+    request = new Request(@getInitialSql(), (err, rowCount, rows) =>
+      @openTransactions = 0 unless err
       callback(err)
     )
 

test/integration/transactions-test.coffee

@@ -318,3 +318,21 @@ exports.transactionHelperFullRollback = (test) ->
             connection.execSql(request)
         connection.execSql(request)
     connection.execSqlBatch(request)
+
+exports.transactionHelperResetOpenTransactionCount = (test) ->
+  test.expect(3)
+
+  connection = new Connection(config)
+  connection.on('end', (info) => test.done())
+  connection.on('errorMessage', (error) => console.log("#{error.number} : #{error.message}"))
+  connection.on('debug', (message) => console.log(message) if (debug))
+
+  connection.on 'connect', (err) ->
+    connection.transaction (err) ->
+      test.ifError(err)
+
+      connection.reset (err) ->
+        test.ifError(err)
+
+        test.strictEqual(connection.openTransactions, 0)
+        connection.close()