From cbabeebc95e9e42c0356e089b742588a4de75d56 Mon Sep 17 00:00:00 2001
From: INADA Naoki <inada-n@klab.com>
Date: Tue, 29 Jan 2013 14:47:16 +0900
Subject: [PATCH] Use MSGPACK_PUREPYTHON envvar to test fallback module

---
 .travis.yml         |  2 +-
 msgpack/__init__.py | 12 ++++++++----
 2 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 2e6fc56..e536fdc 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,4 +12,4 @@ install:
     - cython --cplus msgpack/_packer.pyx
     - cython --cplus msgpack/_unpacker.pyx
 
-script: "tox"
+script: "tox && MSGPACK_PUREPYTHON=x tox"
diff --git a/msgpack/__init__.py b/msgpack/__init__.py
index 49a32d9..77f6b81 100644
--- a/msgpack/__init__.py
+++ b/msgpack/__init__.py
@@ -2,11 +2,15 @@
 from msgpack._version import version
 from msgpack.exceptions import *
 
-try:
-    from msgpack._packer import pack, packb, Packer
-    from msgpack._unpacker import unpack, unpackb, Unpacker
-except ImportError:
+import os
+if os.environ.get('MSGPACK_PUREPYTHON'):
     from msgpack.fallback import pack, packb, Packer, unpack, unpackb, Unpacker
+else:
+    try:
+        from msgpack._packer import pack, packb, Packer
+        from msgpack._unpacker import unpack, unpackb, Unpacker
+    except ImportError:
+        from msgpack.fallback import pack, packb, Packer, unpack, unpackb, Unpacker
 
 # alias for compatibility to simplejson/marshal/pickle.
 load = unpack