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# Copyright 2023 The Bazel Authors. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import unittest
from tools.private.update_deps.update_file import replace_snippet, unified_diff
class TestReplaceSnippet(unittest.TestCase):
def test_replace_simple(self):
current = """\
Before the snippet
# Start marker
To be replaced
It may have the '# Start marker' or '# End marker' in the middle,
But it has to be in the beginning of the line to mark the end of a region.
# End marker
After the snippet
"""
snippet = "Replaced"
got = replace_snippet(
current=current,
snippet="Replaced",
start_marker="# Start marker",
end_marker="# End marker",
)
want = """\
Before the snippet
# Start marker
Replaced
# End marker
After the snippet
"""
self.assertEqual(want, got)
def test_replace_indented(self):
current = """\
Before the snippet
# Start marker
To be replaced
# End marker
After the snippet
"""
got = replace_snippet(
current=current,
snippet=" Replaced",
start_marker="# Start marker",
end_marker="# End marker",
)
want = """\
Before the snippet
# Start marker
Replaced
# End marker
After the snippet
"""
self.assertEqual(want, got)
def test_raises_if_start_is_not_found(self):
with self.assertRaises(RuntimeError) as exc:
replace_snippet(
current="foo",
snippet="",
start_marker="start",
end_marker="end",
)
self.assertEqual(exc.exception.args[0], "Start marker 'start' was not found")
def test_raises_if_end_is_not_found(self):
with self.assertRaises(RuntimeError) as exc:
replace_snippet(
current="start",
snippet="",
start_marker="start",
end_marker="end",
)
self.assertEqual(exc.exception.args[0], "End marker 'end' was not found")
class TestUnifiedDiff(unittest.TestCase):
def test_diff(self):
give_a = """\
First line
second line
Third line
"""
give_b = """\
First line
Second line
Third line
"""
got = unified_diff("filename", give_a, give_b)
want = """\
--- a/filename
+++ b/filename
@@ -1,3 +1,3 @@
First line
-second line
+Second line
Third line"""
self.assertEqual(want, got)
if __name__ == "__main__":
unittest.main()
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