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-rw-r--r--obnamlib/fmt_ga/cowdelta_tests.py52
1 files changed, 52 insertions, 0 deletions
diff --git a/obnamlib/fmt_ga/cowdelta_tests.py b/obnamlib/fmt_ga/cowdelta_tests.py
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+# Copyright 2017 Lars Wirzenius
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+# =*= License: GPL-3+ =*=
+
+
+import unittest
+
+
+import obnamlib
+
+
+class CowDeltaTests(unittest.TestCase):
+
+ def test_is_empty_initially(self):
+ delta = obnamlib.CowDelta()
+ self.assertEqual(delta.keys(), [])
+ self.assertFalse('key' in delta)
+
+ def test_remembers_key_value_pair(self):
+ delta = obnamlib.CowDelta()
+ delta.set('key', 'value')
+ self.assertEqual(delta.keys(), ['key'])
+ self.assertEqual(delta.get('key'), 'value')
+ self.assertTrue('key' in delta)
+
+ def test_remembers_second_value_for_key(self):
+ delta = obnamlib.CowDelta()
+ delta.set('key', 'old-value')
+ delta.set('key', 'new-value')
+ self.assertEqual(delta.keys(), ['key'])
+ self.assertEqual(delta.get('key'), 'new-value')
+ self.assertTrue('key' in delta)
+
+ def test_remembers_removed_key(self):
+ delta = obnamlib.CowDelta()
+ delta.remove('key')
+ self.assertEqual(delta.keys(), ['key'])
+ self.assertEqual(delta.get('key'), obnamlib.removed_key)
+ self.assertTrue('key' in delta)