[travis] Separate builds for core and download

.travis.yml

@@ -8,7 +8,12 @@ python:
   - "3.5"
   - "3.6"
 sudo: false
-script: nosetests test --verbose
+env:
+  - YTDL_TEST_SET=core
+  - YTDL_TEST_SET=download
+before_script:
+  - chmod +x ./devscripts/run_tests.sh
+script: ./devscripts/run_tests.sh
 notifications:
   email:
     - filippo.valsorda@gmail.com

devscripts/run_tests.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+DOWNLOAD_TESTS="age_restriction|download|subtitles|write_annotations|iqiyi_sdk_interpreter"
+
+test_set=""
+
+case "$YTDL_TEST_SET" in
+    core)
+        test_set="-I test_($DOWNLOAD_TESTS)\.py"
+    ;;
+    download)
+        test_set="-I test_(?!$DOWNLOAD_TESTS).+\.py"
+    ;;
+    *)
+        break
+    ;;
+esac
+
+nosetests test --verbose $test_set