Fix codecov, fixes #97

- Update pytest and pytest-cov to latest version
- Actually call coverage report when tests are run
- Pin coverage to 3.7.1 because of bug with py32

Author: nryoung

.travis.yml

@@ -22,4 +22,4 @@ script:
 
 after_success:
   - pip install codecov
-  - codecov
+  - codecov -e TOX_ENV

requirements/requirements-testing.txt

@@ -1,10 +1,12 @@
+cov-core==1.15.0
+coverage==3.7.1
 flake8==2.4.1
 mccabe==0.3.1
 pep8==1.5.7
 pluggy==0.3.1
 py==1.4.30
 pyflakes==0.8.1
-pytest==2.8.0
-pytest-cov==1.8.1
+pytest==2.8.2
+pytest-cov==2.2.0
 tox==2.1.1
 virtualenv==13.1.2

run_tests.py

@@ -46,7 +46,11 @@ def flake8_main(args):
     except ValueError:
         pass
     else:
-        pytest_args = ['--cov', 'algorithms'] + pytest_args
+        pytest_args = [
+            '--cov-report',
+            'xml',
+            '--cov',
+            'algorithms'] + pytest_args
 
     if run_tests:
         exit_on_failure(pytest.main(pytest_args))