handle :transaction mode used by SQL.Sandbox (#33)

Author: kevinlang

lib/exqlite/connection.ex

@@ -187,6 +187,9 @@ defmodule Exqlite.Connection do
  :deferred when transaction_status == :idle ->
  handle_transaction(:begin, "BEGIN TRANSACTION", state)
 
+ :transaction when transaction_status == :idle ->
+ handle_transaction(:begin, "BEGIN TRANSACTION", state)
+
  :immediate when transaction_status == :idle ->
  handle_transaction(:begin, "BEGIN IMMEDIATE TRANSACTION", state)
 
@@ -207,7 +210,7 @@ defmodule Exqlite.Connection do
  handle_transaction(:commit, "RELEASE SAVEPOINT exqlite_savepoint", state)
 
  mode
- when mode in [:deferred, :immediate, :exclusive] and
+ when mode in [:deferred, :immediate, :exclusive, :transaction] and
  transaction_status == :transaction ->
  handle_transaction(:commit, "COMMIT", state)
  end
@@ -227,7 +230,7 @@ defmodule Exqlite.Connection do
  end
 
  mode
- when mode in [:deferred, :immediate, :exclusive] and
+ when mode in [:deferred, :immediate, :exclusive, :transaction] and
  transaction_status == :transaction ->
  handle_transaction(:rollback, "ROLLBACK TRANSACTION", state)
  end