fix test

satella/processes.py

 import subprocess
 import typing as tp
 import threading
+import logging
 
 from .exceptions import ProcessFailed
 
+logger = logging.getLogger(__name__)
+
 
 def read_nowait(process: subprocess.Popen, output_list: tp.List[str]):
     try:
@@ -31,20 +34,24 @@ def call_and_return_stdout(args: tp.Union[str, tp.List[str]],
     """
     if isinstance(args, str):
         args = args.split(' ')
-
+    logger.warning('Modifying kwargs')
     kwargs['stdout'] = subprocess.PIPE
 
     stdout_list = []
 
+    logger.warning('Starting popen')
     proc = subprocess.Popen(args, **kwargs)
     reader_thread = threading.Thread(target=read_nowait, args=(proc, stdout_list), daemon=True)
+    logger.warning('Starting rt')
     reader_thread.start()
+    logger.warning('Waiting for termination')
 
     try:
         proc.wait(timeout=timeout)
     except subprocess.TimeoutExpired:
         proc.kill()
         proc.wait()
+    logger.warning('Terminated')
 
     if proc.returncode != expected_return_code:
         raise ProcessFailed(proc.returncode)

tests/test_processes.py

@@ -6,10 +6,10 @@ from satella.processes import call_and_return_stdout
 class TestProcesses(unittest.TestCase):
     @unittest.skipIf('win' in sys.platform, 'Running on Windows')
     def test_return_stdout(self):
-        output = call_and_return_stdout('cat /proc/meminfo', shell=True)
+        output = call_and_return_stdout('cat /proc/meminfo', shell=True, timeout=3)
         self.assertIn(b'MemTotal', output)
 
     @unittest.skipIf('win' in sys.platform or sys.version_info.minor < 6, 'Running on Windows or Python 3.5')
     def test_return_encoding(self):
-        output = call_and_return_stdout('cat /proc/meminfo', shell=True, encoding='utf8')
+        output = call_and_return_stdout('cat /proc/meminfo', shell=True, encoding='utf8', timeout=3)
         self.assertIn('MemTotal', output)