fix some testing.

* Python3 test support
* Specify depended library version for Python2.4, 2.5

tests/run.py

@@ -11,19 +11,24 @@
 """
 
 import sys
-from os import path, chdir, listdir
+from os import path, chdir, listdir, environ
 
 if sys.version_info >= (3, 0):
     print('Copying and converting sources to build/lib/tests...')
     from distutils.util import copydir_run_2to3
     testroot = path.dirname(__file__) or '.'
-    newroot = path.join(testroot, path.pardir, 'build')
-    newroot = path.join(newroot, listdir(newroot)[0], 'tests')
+    if 'BUILD_TEST_PATH' in environ:
+        # for tox test.
+        newroot = environ['BUILD_TEST_PATH']
+        # tox install sphinx package, not need sys.path.insert.
+    else:
+        newroot = path.join(testroot, path.pardir, 'build')
+        newroot = path.join(newroot, listdir(newroot)[0], 'tests')
+        # always test the sphinx package from build/lib/
+        sys.path.insert(0, path.join(newroot, path.pardir))
     copydir_run_2to3(testroot, newroot)
     # switch to the converted dir so nose tests the right tests
     chdir(newroot)
-    # always test the sphinx package from build/lib/
-    sys.path.insert(0, path.pardir)
 else:
     # always test the sphinx package from this directory
     sys.path.insert(0, path.join(path.dirname(__file__), path.pardir))

tox.ini

@@ -4,14 +4,21 @@ envlist=py24,py25,py26,py27,py31,py32,pypy,du08,du07,du06,du05
 [testenv]
 deps=
     nose
+setenv =
+    BUILD_TEST_PATH = {envdir}/tests
 commands=
-    nosetests
+    {envpython} tests/run.py {posargs}
     sphinx-build -W -b html -d {envtmpdir}/doctrees doc {envtmpdir}/html
 
 [testenv:py24]
 deps=
     nose
-    simplejson
+    simplejson==2.1.0
+
+[testenv:py25]
+deps=
+    nose
+    simplejson==2.5.0
 
 [testenv:pypy]
 deps=