Add coverage for python (#1483)

Author: zhiltsov-max

.coveragerc

@@ -0,0 +1,39 @@
+[run]
+branch = true
+
+source =
+    datumaro/datumaro/
+    cvat/apps/
+    utils/cli/
+
+omit =
+    datumaro/datumaro/__main__.py
+    datumaro/datumaro/version.py
+    cvat/settings/*
+    */tests/*
+    */test_*
+    */_test_*
+    */migrations/*
+
+[report]
+# Regexes for lines to exclude from consideration
+exclude_lines =
+    # Have to re-enable the standard pragma
+    pragma: no cover
+
+    # Don't complain about missing debug-only code:
+    def __repr__
+    if\s+[\w\.()]+\.isEnabledFor\(log\.DEBUG\):
+
+    # Don't complain if tests don't hit defensive assertion code:
+    raise AssertionError
+    raise NotImplementedError
+
+    # Don't complain if non-runnable code isn't run:
+    if 0:
+    if __name__ == .__main__.:
+
+# don't fail on the code that can be found
+ignore_errors = true
+
+skip_empty = true

.gitignore

@@ -19,6 +19,7 @@ docker-compose.override.yml
 __pycache__
 *.pyc
 ._*
+.coverage
 
 # Ignore development npm files
 node_modules

.travis.yml

@@ -8,11 +8,21 @@ python:
 services:
   - docker
 
+env:
+  - CONTAINER_COVERAGE_DATA_DIR="/coverage_data"
+    HOST_COVERAGE_DATA_DIR="${TRAVIS_BUILD_DIR}/coverage_data"
+
+install:
+  - gem install coveralls-lcov
+  - pip install coveralls
+
 before_script:
   - docker-compose -f docker-compose.yml -f docker-compose.ci.yml build
+  - mkdir -m a=rwx -p ${HOST_COVERAGE_DATA_DIR}
 
 script:
-  - docker-compose -f docker-compose.yml -f docker-compose.ci.yml run cvat_ci /bin/bash -c 'python3 manage.py test cvat/apps utils/cli'
-  - docker-compose -f docker-compose.yml -f docker-compose.ci.yml run cvat_ci /bin/bash -c 'python3 manage.py test --pattern="_tests.py" cvat/apps/dataset_manager'
-  - docker-compose -f docker-compose.yml -f docker-compose.ci.yml run cvat_ci /bin/bash -c 'python3 manage.py test datumaro/'
-  - docker-compose -f docker-compose.yml -f docker-compose.ci.yml run cvat_ci /bin/bash -c 'cd cvat-data && npm install && cd ../cvat-core && npm install && npm run test && npm run coveralls'
+  - docker-compose -f docker-compose.yml -f docker-compose.ci.yml run cvat_ci /bin/bash -c 'coverage run -a manage.py test cvat/apps utils/cli && coverage run -a --source cvat/apps/ manage.py test --pattern="_tests.py" cvat/apps/dataset_manager && mv .coverage ${CONTAINER_COVERAGE_DATA_DIR}'
+  - docker-compose -f docker-compose.yml -f docker-compose.ci.yml run cvat_ci /bin/bash -c 'cd cvat-data && npm install && cd ../cvat-core && npm install && npm run test && mv ./reports/coverage/lcov.info ${CONTAINER_COVERAGE_DATA_DIR}'
+
+after_success:
+  - coveralls-lcov -v -n lcov.info > coverage.json && coveralls --merge=coverage.json

cvat/requirements/testing.txt

@@ -3,3 +3,4 @@ fakeredis==1.1.0
 # Fix dependencies for fakeredis 1.1.0
 # Pip will not reinstall six package if it is installed already
 six==1.12.0
+coveralls

docker-compose.ci.yml

@@ -15,3 +15,6 @@ services:
       TRAVIS_JOB_ID:
       TRAVIS_BRANCH:
       TRAVIS_PULL_REQUEST:
+      CONTAINER_COVERAGE_DATA_DIR:
+    volumes:
+      - ${HOST_COVERAGE_DATA_DIR}:${CONTAINER_COVERAGE_DATA_DIR}