From 795ea6c7543bed401ab506ff4681bcde6ad83405 2013-12-03 20:14:18
From: Thomas Kluyver <takowl@gmail.com>
Date: 2013-12-03 20:14:18
Subject: [PATCH] Use argument lists for testing command help output.

Avoids quoting and escaping issues if there is a space in
sys.executable.

Closes gh-4629

---

diff --git a/IPython/testing/tools.py b/IPython/testing/tools.py
index b09da9b..1dacec4 100644
--- a/IPython/testing/tools.py
+++ b/IPython/testing/tools.py
@@ -425,7 +425,7 @@ def monkeypatch(obj, name, attr):
 
 def help_output_test(subcommand=''):
     """test that `ipython [subcommand] -h` works"""
-    cmd = ' '.join(get_ipython_cmd() + [subcommand, '-h'])
+    cmd = get_ipython_cmd() + [subcommand, '-h']
     out, err, rc = get_output_error_code(cmd)
     nt.assert_equal(rc, 0, err)
     nt.assert_not_in("Traceback", err)
@@ -436,7 +436,7 @@ def help_output_test(subcommand=''):
 
 def help_all_output_test(subcommand=''):
     """test that `ipython [subcommand] --help-all` works"""
-    cmd = ' '.join(get_ipython_cmd() + [subcommand, '--help-all'])
+    cmd = get_ipython_cmd() + [subcommand, '--help-all']
     out, err, rc = get_output_error_code(cmd)
     nt.assert_equal(rc, 0, err)
     nt.assert_not_in("Traceback", err)