Fix tests on Travis and enable coveralls.

.travis.yml

@@ -1,13 +1,25 @@
 language: python
 sudo: false
-env:
-    - TOXENV=py27
-    - TOXENV=py35
-    - TOXENV=py36
-    - TOXENV=pypy
-install:
-    - travis_retry pip install tox
+python:
+  - 2.7
+  - 3.5
+  - 3.6
+  - pypy-5.4.1
 script:
-    - tox
+  - coverage run -m zope.testrunner --test-path=src  --auto-color --auto-progress
+
+after_success:
+  - coveralls
 notifications:
-    email: false
+  email: false
+
+install:
+  - pip install -U pip setuptools
+  - pip install -U coveralls coverage
+  - pip install -U -e ".[test]"
+
+
+cache: pip
+
+before_cache:
+    - rm -f $HOME/.cache/pip/log/debug.log

setup.py

@@ -25,6 +25,7 @@ def read(*rnames):
     return open(os.path.join(os.path.dirname(__file__), *rnames)).read()
 
 TESTS_REQUIRE = [
+    'zope.testrunner',
 ]
 
 setup(name='zope.app.schema',
@@ -56,7 +57,8 @@ def read(*rnames):
           'Natural Language :: English',
           'Operating System :: OS Independent',
           'Topic :: Internet :: WWW/HTTP',
-          'Framework :: Zope3'],
+          'Framework :: Zope3',
+      ],
       url='http://pypi.python.org/pypi/zope.app.schema',
       license='ZPL 2.1',
       packages=find_packages('src'),
@@ -69,7 +71,7 @@ def read(*rnames):
           'zope.component',
           'zope.interface',
           'zope.schema',
-          ],
+      ],
       include_package_data = True,
       tests_require=TESTS_REQUIRE,
       test_suite='zope.app.schema.tests.test_suite',

tox.ini

@@ -2,11 +2,7 @@
 envlist = py27,py35,py36,pypy
 
 [testenv]
-usedevelop = true
 commands =
-    python setup.py -q test
+    zope-testrunner --test-path=src []
 deps =
-    zope.component
-    zope.interface
-    zope.schema
     .[test]