mocha-phantomjs output not shown when run with Python subprocess.check_output

Question

Guessing this is something to do with STDOUT/STDERR redirection, but the console output is not displayed when running

#!/usr/bin/env python
import subprocess
subprocess.check_output('mocha-phantomjs static/js/tests/headless.html'.split())

The same command in the terminal prints out all the test output

Calling check_output on Nose tests `./manage.py test` displays STDOUT which is what threw me here — igniteflow, Feb 16 '15 at 10:58

score 1 · Answer 1 · answered Feb 13 '15 at 16:32

1

You should print the output...

#!/usr/bin/env python
import subprocess
print(subprocess.check_output('mocha-phantomjs static/js/tests/headless.html'.split()))

answered Feb 13 '15 at 16:32

laike9m

Ah, can't believe I missed this! What threw me is the second call I was making to run Python tests with Nose was still outputting to STDOUT without explicitly printing in the Python script. – igniteflow Feb 16 '15 at 10:55

score 1 · Accepted Answer · answered Feb 14 '15 at 19:17

1

check_output() captures subprocess' stdout. Use check_call() to avoid redirecting stdout:

#!/usr/bin/env python
from subprocess import check_call

check_call(['mocha-phantomjs', 'static/js/tests/headless.html'])

answered Feb 14 '15 at 19:17

jfs

2 Answers2