Add test for to specify name of an environment variable.

IPython/utils/tests/test_text.py

@@ -1,111 +1,113 b''
 # encoding: utf-8
 """Tests for IPython.utils.text"""
 
 #-----------------------------------------------------------------------------
 #  Copyright (C) 2011  The IPython Development Team
 #
 #  Distributed under the terms of the BSD License.  The full license is in
 #  the file COPYING, distributed as part of this software.
 #-----------------------------------------------------------------------------
 
 #-----------------------------------------------------------------------------
 # Imports
 #-----------------------------------------------------------------------------
 
 import os
 import math
 
 import nose.tools as nt
 
 from nose import with_setup
 
 from IPython.testing import decorators as dec
 from IPython.utils import text
 
 #-----------------------------------------------------------------------------
 # Globals
 #-----------------------------------------------------------------------------
 
 def test_columnize():
     """Basic columnize tests."""
     size = 5
     items = [l*size for l in 'abc']
     out = text.columnize(items, displaywidth=80)
     nt.assert_equals(out, 'aaaaa  bbbbb  ccccc\n')
     out = text.columnize(items, displaywidth=10)
     nt.assert_equals(out, 'aaaaa  ccccc\nbbbbb\n')
 
 
 def test_columnize_long():
     """Test columnize with inputs longer than the display window"""
     text.columnize(['a'*81, 'b'*81], displaywidth=80)
     size = 11
     items = [l*size for l in 'abc']
     out = text.columnize(items, displaywidth=size-1)
     nt.assert_equals(out, '\n'.join(items+['']))
 
 def eval_formatter_check(f):
     ns = dict(n=12, pi=math.pi, stuff='hello there', os=os, u=u"café", b="café")
     s = f.format("{n} {n//4} {stuff.split()[0]}", **ns)
     nt.assert_equals(s, "12 3 hello")
     s = f.format(' '.join(['{n//%i}'%i for i in range(1,8)]), **ns)
     nt.assert_equals(s, "12 6 4 3 2 2 1")
     s = f.format('{[n//i for i in range(1,8)]}', **ns)
     nt.assert_equals(s, "[12, 6, 4, 3, 2, 2, 1]")
     s = f.format("{stuff!s}", **ns)
     nt.assert_equals(s, ns['stuff'])
     s = f.format("{stuff!r}", **ns)
     nt.assert_equals(s, repr(ns['stuff']))
     
     # Check with unicode:
     s = f.format("{u}", **ns)
     nt.assert_equals(s, ns['u'])
     # This decodes in a platform dependent manner, but it shouldn't error out
     s = f.format("{b}", **ns)
         
     nt.assert_raises(NameError, f.format, '{dne}', **ns)
 
 def eval_formatter_slicing_check(f):
     ns = dict(n=12, pi=math.pi, stuff='hello there', os=os)
     s = f.format(" {stuff.split()[:]} ", **ns)
     nt.assert_equals(s, " ['hello', 'there'] ")
     s = f.format(" {stuff.split()[::-1]} ", **ns)
     nt.assert_equals(s, " ['there', 'hello'] ")
     s = f.format("{stuff[::2]}", **ns)
     nt.assert_equals(s, ns['stuff'][::2])
     
     nt.assert_raises(SyntaxError, f.format, "{n:x}", **ns)
     
 
 def eval_formatter_no_slicing_check(f):
     ns = dict(n=12, pi=math.pi, stuff='hello there', os=os)
     
     s = f.format('{n:x} {pi**2:+f}', **ns)
     nt.assert_equals(s, "c +9.869604")
     
     nt.assert_raises(SyntaxError, f.format, "{a[:]}")
 
 def test_eval_formatter():
     f = text.EvalFormatter()
     eval_formatter_check(f)
     eval_formatter_no_slicing_check(f)
 
 def test_full_eval_formatter():
     f = text.FullEvalFormatter()
     eval_formatter_check(f)
     eval_formatter_slicing_check(f)
 
 def test_dollar_formatter():
     f = text.DollarFormatter()
     eval_formatter_check(f)
     eval_formatter_slicing_check(f)
     
     ns = dict(n=12, pi=math.pi, stuff='hello there', os=os)
     s = f.format("$n", **ns)
     nt.assert_equals(s, "12")
     s = f.format("$n.real", **ns)
     nt.assert_equals(s, "12")
     s = f.format("$n/{stuff[:5]}", **ns)
     nt.assert_equals(s, "12/hello")
     s = f.format("$n $$HOME", **ns)
     nt.assert_equals(s, "12 $HOME")
+    s = f.format("${foo}", foo="HOME")
+    nt.assert_equals(s, "$HOME")