Added initial tests for __main__.py

Author: suggiro

pytest_watch/__main__.py

@@ -12,6 +12,7 @@
 def run_cli():
     import os
     import sys
+
     sys.path.append(os.path.dirname(__file__))
 
     from pytest_watch.command import main

pytest_watch/tests/test_main.py

@@ -0,0 +1,20 @@
+import os
+import sys
+import unittest
+
+try:
+    from unittest.mock import patch
+except ImportError:
+    from mock import patch
+
+from pytest_watch import __main__
+from pytest_watch.__main__ import run_cli
+
+
+class TestRunCLI(unittest.TestCase):
+
+    @patch("pytest_watch.command.main", side_effect=lambda argv: 0)
+    def test_add_pytest_watch_folder_to_path(self, main):
+        run_cli()
+        self.assertIn(os.path.dirname(__main__.__file__), sys.path)
+