move pypy3 to the allowed failures and add hypothesis

pypy3 is not compatible with hypothesis, which is needed for testing

.gitignore

@@ -18,6 +18,7 @@ build/
 dist/
 .coverage
 src/escpos/version.py
+.hypothesis
 
 # testing temporary directories
 test/test-cli-output/

.travis.yml

@@ -28,6 +28,7 @@ matrix:
   allow_failures:
     - python: 3.5-dev
     - python: nightly
+    - python: pypy3
 before_install:
     - pip install tox codecov
 script:

setup.py

@@ -116,7 +116,7 @@ setup(
     setup_requires=[
         'setuptools_scm',
     ],
-    tests_require=['tox', 'nose', 'scripttest'],
+    tests_require=['tox', 'nose', 'scripttest', 'mock', 'hypothesis'],
     cmdclass={'test': Tox},
     entry_points={
         'console_scripts': [

tox.ini

@@ -5,6 +5,8 @@ envlist = py27, py34, py35, docs
 deps = nose
        coverage
        scripttest
+       mock
+       hypothesis
 commands = nosetests --with-coverage --cover-erase --cover-branches
 
 [testenv:docs]