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-rw-r--r--testing/tests/pipes/test_pipes.py32
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diff --git a/testing/tests/pipes/test_pipes.py b/testing/tests/pipes/test_pipes.py
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+# -*- coding: utf-8 -*-
+# test_pipes.py
+# Copyright (C) 2017 LEAP
+#
+# 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/>.
+"""
+Tests for streaming components.
+"""
+from twisted.trial import unittest
+from leap.soledad.client._pipes import TruncatedTailPipe
+
+
+class TruncatedTailTestCase(unittest.TestCase):
+
+ def test_tail_truncating_pipe(self):
+ pipe = TruncatedTailPipe(tail_size=20)
+ payload = 'A' * 100 + 'B' * 20
+ for data in payload:
+ pipe.write(data)
+ result = pipe.close()
+ assert result.getvalue() == 'A' * 100