1 files changed, 141 insertions, 0 deletions
diff --git a/lib/python2.7/test/test_print.py b/lib/python2.7/test/test_print.py
new file mode 100644
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+++ b/lib/python2.7/test/test_print.py
@@ -0,0 +1,141 @@
+"""Test correct operation of the print function.
+"""
+
+# In 2.6, this gives us the behavior we want.  In 3.0, it has
+#  no function, but it still must parse correctly.
+from __future__ import print_function
+
+import unittest
+from test import test_support
+
+from StringIO import StringIO
+
+NotDefined = object()
+
+# A dispatch table all 8 combinations of providing
+#  sep, end, and file
+# I use this machinery so that I'm not just passing default
+#  values to print, I'm either passing or not passing in the
+#  arguments
+dispatch = {
+    (False, False, False):
+     lambda args, sep, end, file: print(*args),
+    (False, False, True):
+     lambda args, sep, end, file: print(file=file, *args),
+    (False, True,  False):
+     lambda args, sep, end, file: print(end=end, *args),
+    (False, True,  True):
+     lambda args, sep, end, file: print(end=end, file=file, *args),
+    (True,  False, False):
+     lambda args, sep, end, file: print(sep=sep, *args),
+    (True,  False, True):
+     lambda args, sep, end, file: print(sep=sep, file=file, *args),
+    (True,  True,  False):
+     lambda args, sep, end, file: print(sep=sep, end=end, *args),
+    (True,  True,  True):
+     lambda args, sep, end, file: print(sep=sep, end=end, file=file, *args),
+    }
+
+# Class used to test __str__ and print
+class ClassWith__str__:
+    def __init__(self, x):
+        self.x = x
+    def __str__(self):
+        return self.x
+
+class TestPrint(unittest.TestCase):
+    def check(self, expected, args,
+            sep=NotDefined, end=NotDefined, file=NotDefined):
+        # Capture sys.stdout in a StringIO.  Call print with args,
+        #  and with sep, end, and file, if they're defined.  Result
+        #  must match expected.
+
+        # Look up the actual function to call, based on if sep, end, and file
+        #  are defined
+        fn = dispatch[(sep is not NotDefined,
+                       end is not NotDefined,
+                       file is not NotDefined)]
+
+        with test_support.captured_stdout() as t:
+            fn(args, sep, end, file)
+
+        self.assertEqual(t.getvalue(), expected)
+
+    def test_print(self):
+        def x(expected, args, sep=NotDefined, end=NotDefined):
+            # Run the test 2 ways: not using file, and using
+            #  file directed to a StringIO
+
+            self.check(expected, args, sep=sep, end=end)
+
+            # When writing to a file, stdout is expected to be empty
+            o = StringIO()
+            self.check('', args, sep=sep, end=end, file=o)
+
+            # And o will contain the expected output
+            self.assertEqual(o.getvalue(), expected)
+
+        x('\n', ())
+        x('a\n', ('a',))
+        x('None\n', (None,))
+        x('1 2\n', (1, 2))
+        x('1   2\n', (1, ' ', 2))
+        x('1*2\n', (1, 2), sep='*')
+        x('1 s', (1, 's'), end='')
+        x('a\nb\n', ('a', 'b'), sep='\n')
+        x('1.01', (1.0, 1), sep='', end='')
+        x('1*a*1.3+', (1, 'a', 1.3), sep='*', end='+')
+        x('a\n\nb\n', ('a\n', 'b'), sep='\n')
+        x('\0+ +\0\n', ('\0', ' ', '\0'), sep='+')
+
+        x('a\n b\n', ('a\n', 'b'))
+        x('a\n b\n', ('a\n', 'b'), sep=None)
+        x('a\n b\n', ('a\n', 'b'), end=None)
+        x('a\n b\n', ('a\n', 'b'), sep=None, end=None)
+
+        x('*\n', (ClassWith__str__('*'),))
+        x('abc 1\n', (ClassWith__str__('abc'), 1))
+
+        # 2.x unicode tests
+        x(u'1 2\n', ('1', u'2'))
+        x(u'u\1234\n', (u'u\1234',))
+        x(u'  abc 1\n', (' ', ClassWith__str__(u'abc'), 1))
+
+        # errors
+        self.assertRaises(TypeError, print, '', sep=3)
+        self.assertRaises(TypeError, print, '', end=3)
+        self.assertRaises(AttributeError, print, '', file='')
+
+    def test_mixed_args(self):
+        # If an unicode arg is passed, sep and end should be unicode, too.
+        class Recorder(object):
+
+            def __init__(self, must_be_unicode):
+                self.buf = []
+                self.force_unicode = must_be_unicode
+
+            def write(self, what):
+                if self.force_unicode and not isinstance(what, unicode):
+                    raise AssertionError("{0!r} is not unicode".format(what))
+                self.buf.append(what)
+
+        buf = Recorder(True)
+        print(u'hi', file=buf)
+        self.assertEqual(u''.join(buf.buf), 'hi\n')
+        del buf.buf[:]
+        print(u'hi', u'nothing', file=buf)
+        self.assertEqual(u''.join(buf.buf), 'hi nothing\n')
+        buf = Recorder(False)
+        print('hi', 'bye', end=u'\n', file=buf)
+        self.assertIsInstance(buf.buf[1], unicode)
+        self.assertIsInstance(buf.buf[3], unicode)
+        del buf.buf[:]
+        print(sep=u'x', file=buf)
+        self.assertIsInstance(buf.buf[-1], unicode)
+
+
+def test_main():
+    test_support.run_unittest(TestPrint)
+
+if __name__ == "__main__":
+    test_main()