Add data test and cron conditions.

.travis.yml

@@ -1,4 +1,6 @@
 stage: unittest
+if: env(TRAVIS_EVENT_TYPE) != cron
+os: linux
 dist: xenial
 language: python
 python:
@@ -17,15 +19,30 @@ after_success:
 
 jobs:
   - stage: inttest
-    if: branch = master
+    if: branch = master AND env(TRAVIS_EVENT_TYPE) != cron
+    os: linux
     dist: xenial
     language: python
     python: 3.5
     install:
       - pip install -r requirements.txt
     script:
       - travis_wait 30 make inttest
+
+  - stage: datatest
+    if: env(TRAVIS_EVENT_TYPE) = cron
+    os: linux
+    dist: xenial
+    language: python
+    python: 3.5
+    install:
+      - pip install -r requirements.txt
+    script:
+      - travis_wait 180 make datatest
+
   - stage: lint
+    if: env(TRAVIS_EVENT_TYPE) != cron
+    os: linux
     dist: xenial
     language: python
     python: 3.5

Makefile

@@ -17,11 +17,11 @@ test:
 coveragetest:
 	coverage run --source pyconll -m pytest --ignore tests/int
 
-# Integration test scenario into the development branch.
+# Integration test scenario for releases validation and support.
 inttest:
 	python -m pytest tests/int/test_corpora.py::test_ud_v2_6_data --log-cli-level info
 
-# Data test scenario across all supported data sets; heavy
+# Data test scenario across all supported data sets to be run periodically.
 datatest:
 	python -m pytest tests/int --log-cli-level info