135 lines
4.4 KiB
Python
135 lines
4.4 KiB
Python
#!/usr/bin/env python3
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# Copyright 2010-2022 Google LLC
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Tests for message_callback."""
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import io
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import os
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from absl import logging
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import unittest
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from ortools.math_opt.python import message_callback
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class PrinterMessageCallbackTest(unittest.TestCase):
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def test_no_prefix(self):
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class FlushCountingStringIO(io.StringIO):
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def __init__(self):
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super().__init__()
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self.num_flushes: int = 0
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def flush(self):
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super().flush()
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self.num_flushes += 1
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buf = FlushCountingStringIO()
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cb = message_callback.printer_message_callback(file=buf)
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cb(["line 1", "line 2"])
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cb(["line 3"])
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self.assertMultiLineEqual(buf.getvalue(), "line 1\nline 2\nline 3\n")
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self.assertEqual(buf.num_flushes, 2)
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def test_with_prefix(self):
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buf = io.StringIO()
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cb = message_callback.printer_message_callback(file=buf, prefix="test> ")
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cb(["line 1", "line 2"])
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cb(["line 3"])
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self.assertMultiLineEqual(
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buf.getvalue(), "test> line 1\ntest> line 2\ntest> line 3\n"
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)
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class LogMessagesTest(unittest.TestCase):
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def test_defaults(self):
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with self.assertLogs(logger="absl", level="INFO") as logs:
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message_callback.log_messages(["line 1", "line 2"])
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self.assertListEqual(logs.output, ["INFO:absl:line 1", "INFO:absl:line 2"])
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def test_prefix(self):
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with self.assertLogs(logger="absl") as logs:
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message_callback.log_messages(["line 1", "line 2"], prefix="solver: ")
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self.assertListEqual(
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logs.output, ["INFO:absl:solver: line 1", "INFO:absl:solver: line 2"]
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)
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def test_warning(self):
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with self.assertLogs(logger="absl") as logs:
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message_callback.log_messages(["line 1", "line 2"], level=logging.WARNING)
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self.assertListEqual(
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logs.output, ["WARNING:absl:line 1", "WARNING:absl:line 2"]
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)
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def test_records_path(self):
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with self.assertLogs(logger="absl") as logs:
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message_callback.log_messages(["line 1", "line 2"])
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self.assertSetEqual(
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set(os.path.basename(r.pathname) for r in logs.records),
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set(("message_callback_test.py",)),
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)
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class VLogMessagesTest(unittest.TestCase):
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"""Tests of vlog_messages().
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In the tests we abuse the logging level 0 since there is not API in the
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`logging` module to change the verbosity.
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"""
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def test_defaults(self):
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with self.assertLogs(logger="absl") as logs:
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message_callback.vlog_messages(["line 1", "line 2"], 0)
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self.assertListEqual(logs.output, ["INFO:absl:line 1", "INFO:absl:line 2"])
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def test_prefix(self):
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with self.assertLogs(logger="absl") as logs:
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message_callback.vlog_messages(["line 1", "line 2"], 0, prefix="solver: ")
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self.assertListEqual(
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logs.output, ["INFO:absl:solver: line 1", "INFO:absl:solver: line 2"]
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)
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def test_records_path(self):
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with self.assertLogs(logger="absl") as logs:
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message_callback.vlog_messages(["line 1", "line 2"], 0)
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self.assertSetEqual(
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set(os.path.basename(r.pathname) for r in logs.records),
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set(("message_callback_test.py",)),
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)
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class ListMessageCallbackTest(unittest.TestCase):
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def test_empty(self):
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msgs = []
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cb = message_callback.list_message_callback(msgs)
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cb(["line 1", "line 2"])
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cb(["line 3"])
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self.assertSequenceEqual(msgs, ("line 1", "line 2", "line 3"))
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def test_not_empty(self):
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msgs = ["initial", "content"]
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cb = message_callback.list_message_callback(msgs)
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cb(["line 1", "line 2"])
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cb(["line 3"])
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self.assertSequenceEqual(
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msgs, ("initial", "content", "line 1", "line 2", "line 3")
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)
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if __name__ == "__main__":
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unittest.main()
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