Use tox from make test

Makefile

@@ -3,11 +3,8 @@
 all: clean-pyc test
 
 test:
-	pip install -r test-requirements.txt -q
-	FLASK_DEBUG= py.test tests examples
-
-tox-test:
-	tox
+	pip install -r test-requirements.txt
+	tox -e py-release
 
 audit:
 	python setup.py audit

setup.cfg

@@ -8,4 +8,4 @@ universal = 1
 license_file = LICENSE
 
 [tool:pytest]
-norecursedirs = .* *.egg *.egg-info env* artwork docs examples
+norecursedirs = .* *.egg *.egg-info env* artwork docs

test-requirements.txt

@@ -1 +1 @@
-pytest
+tox

tox.ini

@@ -4,9 +4,13 @@ envlist = {py26,py27,pypy}-{lowest,release,devel}{,-simplejson}, {py33,py34,py35
 
 
 [testenv]
+passenv = LANG
 usedevelop=true
 commands =
-    py.test [] --cov=flask --cov-report html
+    # We need to install those after Flask is installed.
+    pip install -e examples/flaskr
+    pip install -e examples/minitwit
+    py.test --cov=flask --cov-report html []
 deps=
     pytest
     pytest-cov