1 files changed, 51 insertions, 0 deletions
diff --git a/tests/utils/unittest_utils.py b/tests/utils/unittest_utils.py
new file mode 100644
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+++ b/tests/utils/unittest_utils.py
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+# -*- coding: utf-8 -*-
+# Copyright (c) 2013-2014 Google, Inc.
+# Copyright (c) 2013-2014 LOGILAB S.A. (Paris, FRANCE) <contact@logilab.fr>
+# Copyright (c) 2014 Arun Persaud <arun@nubati.net>
+# Copyright (c) 2015-2018 Claudiu Popa <pcmanticore@gmail.com>
+# Copyright (c) 2015 Aru Sahni <arusahni@gmail.com>
+# Copyright (c) 2015 Ionel Cristian Maries <contact@ionelmc.ro>
+# Copyright (c) 2016 Derek Gustafson <degustaf@gmail.com>
+# Copyright (c) 2016 Glenn Matthews <glenn@e-dad.net>
+# Copyright (c) 2017-2018 Anthony Sottile <asottile@umich.edu>
+# Copyright (c) 2017 Pierre Sassoulas <pierre.sassoulas@cea.fr>
+# Copyright (c) 2017 ttenhoeve-aa <ttenhoeve@appannie.com>
+# Copyright (c) 2017 Łukasz Rogalski <rogalski.91@gmail.com>
+# Copyright (c) 2018 Pierre Sassoulas <pierre.sassoulas@wisebim.fr>
+
+# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
+# For details: https://github.com/PyCQA/pylint/blob/master/COPYING
+
+import io
+import re
+
+from pylint.utils import utils
+
+
+def test__basename_in_blacklist_re_match():
+    patterns = [re.compile(".*enchilada.*"), re.compile("unittest_.*")]
+    assert utils._basename_in_blacklist_re("unittest_utils.py", patterns)
+    assert utils._basename_in_blacklist_re("cheese_enchiladas.xml", patterns)
+
+
+def test__basename_in_blacklist_re_nomatch():
+    patterns = [re.compile(".*enchilada.*"), re.compile("unittest_.*")]
+    assert not utils._basename_in_blacklist_re("test_utils.py", patterns)
+    assert not utils._basename_in_blacklist_re("enchilad.py", patterns)
+
+
+def test_decoding_stream_unknown_encoding():
+    """decoding_stream should fall back to *some* decoding when given an
+    unknown encoding.
+    """
+    binary_io = io.BytesIO(b"foo\nbar")
+    stream = utils.decoding_stream(binary_io, "garbage-encoding")
+    # should still act like a StreamReader
+    ret = stream.readlines()
+    assert ret == ["foo\n", "bar"]
+
+
+def test_decoding_stream_known_encoding():
+    binary_io = io.BytesIO("€".encode("cp1252"))
+    stream = utils.decoding_stream(binary_io, "cp1252")
+    assert stream.read() == "€"