Improve test coverage

Author: asottile

.coveragerc

@@ -1,8 +1,30 @@
+[run]
+parallel = True
+branch = True
+source = $PWD
+data_file = $PWD/.coverage
+omit =
+    .tox/*
+    /usr/*
+    */tmp*
+    */setup.py
+    */upload_appveyor_builds.py
+
 [report]
+show_missing = True
 exclude_lines =
-    pragma: no cover
-    def __repr__
-    raise TypeError
-    except UnicodeEncodeError
-    except KeyboardInterrupt
-    if __name__ == .__main__.:
+    # Have to re-enable the standard pragma
+    \#\s*pragma: no cover
+
+    # Don't complain if tests don't hit defensive assertion code:
+    ^\s*raise AssertionError\b
+    ^\s*raise NotImplementedError\b
+    ^\s*return NotImplemented\b
+    ^\s*raise TypeError\b
+    ^\s*raise$
+
+    # Don't complain if non-runnable code isn't run:
+    ^if __name__ == ['"]__main__['"]:$
+
+[html]
+directory = coverage-html

.travis.yml

@@ -10,7 +10,9 @@ python:
 install:
 - pip install -rrequirements-dev.txt coveralls
 script:
-- coverage run --source sass,sassc,sassutils -m pytest sasstests.py
+- COVERAGE_PROCESS_START=$PWD/.coveragerc py.test sasstests.py
+- coverage combine
+- coverage report
 - flake8 .
 after_success:
 - coveralls

requirements-dev.txt

@@ -1,5 +1,6 @@
 -e .
 coverage
+coverage-enable-subprocess
 flake8>=2.4.0
 pytest
 werkzeug>=0.9