Try and get coveralls working (#261)

Try and get coveralls working

* Switched to using pytest-cov for coverage testing

* Added -numpy>=1.16.0 pip install back to test requirements otherwise get numpy.ufunc size changed error

* Removed coverage report to try and get coveralls updating

.travis.yml

@@ -14,8 +14,7 @@ before_script:
 script:
     - payu list
     - pylint --extension-pkg-whitelist=netCDF4 -E payu
-    - if [[ $TRAVIS_PYTHON_VERSION == 3.6 || $TRAVIS_PYTHON_VERSION == 3.7 ]]; then PYTHONPATH=. coverage run --source payu -m py.test -s test; fi;
+    - if [[ $TRAVIS_PYTHON_VERSION == 3.6 || $TRAVIS_PYTHON_VERSION == 3.7 ]]; then PYTHONPATH=. pytest --cov=payu -s test; fi;
     - cd docs && make html
 after_success:
-    - coverage report -m
-    - coveralls
+    - if [[ $TRAVIS_PYTHON_VERSION == 3.6 || $TRAVIS_PYTHON_VERSION == 3.7 ]]; then coveralls; fi;

test/requirements_test.txt

@@ -1,9 +1,8 @@
-coverage == 3.7.1 ; python_version == '3.2'
-coverage ; python_version != '3.2'
+coverage
 coveralls
 pytest
 pylint
 mnctools
-scipy
 Sphinx
-numpy>=1.16.0
+pytest-cov
+numpy>=1.16.0