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1# Copyright (C) 2010 Google Inc. All rights reserved.
2#
3# Redistribution and use in source and binary forms, with or without
4# modification, are permitted provided that the following conditions are
5# met:
6#
7#    * Redistributions of source code must retain the above copyright
8# notice, this list of conditions and the following disclaimer.
9#    * Redistributions in binary form must reproduce the above
10# copyright notice, this list of conditions and the following disclaimer
11# in the documentation and/or other materials provided with the
12# distribution.
13#    * Neither the name of Google Inc. nor the names of its
14# contributors may be used to endorse or promote products derived from
15# this software without specific prior written permission.
16#
17# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28
29import os.path
30import unittest
31
32from webkitpy.common.system.executive import Executive
33from webkitpy.common.prettypatch import PrettyPatch
34
35
36class PrettyPatchTest(unittest.TestCase):
37    def check_ruby(self):
38        executive = Executive()
39        try:
40            result = executive.run_command(['ruby', '--version'])
41        except OSError, e:
42            return False
43        return True
44
45    _diff_with_multiple_encodings = """
46Index: utf8_test
47===================================================================
48--- utf8_test\t(revision 0)
49+++ utf8_test\t(revision 0)
50@@ -0,0 +1 @@
51+utf-8 test: \xc2\xa0
52Index: latin1_test
53===================================================================
54--- latin1_test\t(revision 0)
55+++ latin1_test\t(revision 0)
56@@ -0,0 +1 @@
57+latin1 test: \xa0
58"""
59
60    def _webkit_root(self):
61        webkitpy_common = os.path.dirname(__file__)
62        webkitpy = os.path.dirname(webkitpy_common)
63        scripts = os.path.dirname(webkitpy)
64        webkit_tools = os.path.dirname(scripts)
65        webkit_root = os.path.dirname(webkit_tools)
66        return webkit_root
67
68    def test_pretty_diff_encodings(self):
69        if not self.check_ruby():
70            return
71
72        pretty_patch = PrettyPatch(Executive(), self._webkit_root())
73        pretty = pretty_patch.pretty_diff(self._diff_with_multiple_encodings)
74        self.assertTrue(pretty)  # We got some output
75        self.assertTrue(isinstance(pretty, str))  # It's a byte array, not unicode
76
77    def test_pretty_print_empty_string(self):
78        if not self.check_ruby():
79            return
80
81        # Make sure that an empty diff does not hang the process.
82        pretty_patch = PrettyPatch(Executive(), self._webkit_root())
83        self.assertEqual(pretty_patch.pretty_diff(""), "")
84