8th day of python challenges 111-117

venv/lib/python3.6/site-packages/pylint/test/extensions/test_emptystring.py

@@ -0,0 +1,39 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2016 Łukasz Rogalski <rogalski.91@gmail.com>
+# Copyright (c) 2016 Alexander Todorov <atodorov@otb.bg>
+# Copyright (c) 2017 Claudiu Popa <pcmanticore@gmail.com>
+# Copyright (c) 2017 Derek Gustafson <degustaf@gmail.com>
+
+# 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
+
+"""Tests for the pylint checker in :mod:`pylint.extensions.emptystring
+"""
+
+import os.path as osp
+import pytest
+
+from pylint.extensions.emptystring import CompareToEmptyStringChecker
+
+
+@pytest.fixture(scope='module')
+def checker(checker):
+    return CompareToEmptyStringChecker
+
+
+@pytest.fixture(scope='module')
+def disable(disable):
+    return ['I']
+
+
+def test_emptystring_message(linter):
+    elif_test = osp.join(osp.dirname(osp.abspath(__file__)), 'data',
+                         'empty_string_comparison.py')
+    linter.check([elif_test])
+    msgs = linter.reporter.messages
+    expected_lineno = [6, 9, 12, 15]
+    assert len(msgs) == len(expected_lineno)
+    for msg, lineno in zip(msgs, expected_lineno):
+        assert msg.symbol == 'compare-to-empty-string'
+        assert msg.msg == 'Avoid comparisons to empty string'
+        assert msg.line == lineno