Improve execution tests

test/test_execution.py

@@ -0,0 +1,26 @@
+import unittest
+
+import sys
+import os
+import subprocess
+
+rootDir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+
+try:
+    _DEV_NULL = subprocess.DEVNULL
+except AttributeError:
+    _DEV_NULL = open(os.devnull, 'wb')
+
+class TestExecution(unittest.TestCase):
+    def test_import(self):
+        subprocess.check_call([sys.executable, '-c', 'import youtube_dl'], cwd=rootDir)
+
+    def test_module_exec(self):
+        if sys.version_info >= (2,7): # Python 2.6 doesn't support package execution
+            subprocess.check_call([sys.executable, '-m', 'youtube_dl', '--version'], cwd=rootDir, stdout=_DEV_NULL)
+
+    def test_main_exec(self):
+        subprocess.check_call([sys.executable, 'youtube_dl/__main__.py', '--version'], cwd=rootDir, stdout=_DEV_NULL)
+
+if __name__ == '__main__':
+    unittest.main()

test/test_import.py

@@ -1,13 +0,0 @@
-import unittest
-
-import sys
-import os.path
-import subprocess
-
-class TestImport(unittest.TestCase):
-    def test_import(self):
-        rootDir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
-        subprocess.check_call([sys.executable, '-c', 'import youtube_dl'], cwd=rootDir)
-
-if __name__ == '__main__':
-    unittest.main()