foo

.travis.yml

@@ -45,6 +45,7 @@ install:
   - if [[ $(echo "$TOXENV" | egrep -c "(py2[45]|py3[12])") == 0 ]]; then pip install tox; fi;
 
 script:
+  - ifconfig
   - tox
 
 notifications:

tests/scripts/source.py

@@ -0,0 +1,22 @@
+#!/usr/bin/env python
+
+import sys
+import subprocess
+
+cmd = [sys.executable, 'speedtest.py', '--source', '127.0.0.1']
+
+p = subprocess.Popen(
+    cmd,
+    stdout=subprocess.PIPE,
+    stderr=subprocess.PIPE
+)
+
+stdout, stderr = p.communicate()
+
+if p.returncode != 1:
+    raise SystemExit('%s did not fail with exit code 1' % ' '.join(cmd))
+
+if 'Invalid argument'.encode() not in stderr:
+    raise SystemExit(
+        '"Invalid argument" not found in stderr:\n%s' % stderr.decode()
+    )

tox.ini

@@ -2,10 +2,13 @@
 skipsdist=true
 
 [testenv]
+whitelist_externals = bash
 commands =
     {envpython} -V
     {envpython} -m compileall speedtest.py
     {envpython} speedtest.py
+    {envpython} speedtest.py --source 172.17.0.1
+    {envpython} tests/scripts/source.py
 
 [testenv:flake8]
 basepython=python
@@ -15,7 +18,10 @@ commands =
     flake8 speedtest.py
 
 [testenv:pypy]
+whitelist_externals = bash
 commands =
     pypy -V
     pypy -m compileall speedtest.py
     pypy speedtest.py
+    pypy speedtest.py --source 172.17.0.1
+    pypy tests/scripts/source.py