to add pytest demo

Author: DovSnier

case/pytest/test_pytest_demo.py

@@ -0,0 +1,17 @@
+# -*- coding:utf-8 -*-
+
+import os
+import pytest
+
+
+def test_cmd_0():
+    ''' the test cmd '''
+    print('\nthe test_cmd_0 ended.')
+
+
+if __name__ == "__main__":
+    ''' the main point '''
+    retcode = pytest.main(args=['-v', '-s', os.path.abspath(__file__)])
+    # retcode = pytest.main(args=['--fixtures', os.path.abspath(__file__)])
+    # retcode = pytest.main(args=['--collect-only', os.path.abspath(__file__)])
+    print(retcode)