From 3249e15fa5e42fe2bf02575eedd3d87934a6b0aa 2015-04-20 18:38:29
From: Thomas Kluyver <takowl@gmail.com>
Date: 2015-04-20 18:38:29
Subject: [PATCH] Make ascii completion test ignore local files

This test was failing because \f completed to a matplotlib fontcache
file. That's possibly erroneous, but it's not what this test was
checking for, so I made it use a temporary working directory.

---

diff --git a/IPython/core/tests/test_completer.py b/IPython/core/tests/test_completer.py
index 7639457..470da16 100644
--- a/IPython/core/tests/test_completer.py
+++ b/IPython/core/tests/test_completer.py
@@ -179,10 +179,11 @@ def test_forward_unicode_completion():
 @dec.onlyif(sys.version_info[0] >= 3, 'This test only apply on python3')
 def test_no_ascii_back_completion():
     ip = get_ipython()
-    # single ascii letter that don't have yet completions
-    for letter in 'fjqyJMQVWY' :
-        name, matches = ip.complete('\\'+letter)
-        nt.assert_equal(len(matches), 0)
+    with TemporaryWorkingDirectory():  # Avoid any filename completions
+        # single ascii letter that don't have yet completions
+        for letter in 'fjqyJMQVWY' :
+            name, matches = ip.complete('\\'+letter)
+            nt.assert_equal(matches, [])