Run functional tests for REST API during a build (#506)

* Run tests for REST API
* Added DJANGO_CONFIGURATION with value "testing"
* Fixed crash of python tests
* Update .travis.yml
* Update CHANGELOG.md
* Removed --settings option

.travis.yml

@@ -12,5 +12,4 @@ before_script:
   - docker-compose -f docker-compose.yml -f docker-compose.ci.yml up --build -d
 
 script:
-  - docker exec -it cvat /bin/bash -c 'tests/node_modules/.bin/karma start tests/karma.conf.js'
-  
+  - docker exec -it cvat /bin/bash -c 'python3 manage.py test cvat/apps/engine && tests/node_modules/.bin/karma start tests/karma.conf.js'

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Installation guide
 - Linear interpolation for a single point
 - Video frame filter
+- Running functional tests for REST API during a build
 - Admins are no longer limited to a subset of python commands in the auto annotation application
 - Remote data source (list of URLs to create an annotation task)
 - Auto annotation using Faster R-CNN with Inception v2 (utils/open_model_zoo)

docker-compose.ci.yml

@@ -4,6 +4,7 @@ services:
   cvat:
     build:
       args:
+        DJANGO_CONFIGURATION: "testing"
         WITH_TESTS: "yes"
       network: host
     environment: