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-rw-r--r--clang/tools/scan-build-py/tests/unit/test_analyze.py15
1 files changed, 15 insertions, 0 deletions
diff --git a/clang/tools/scan-build-py/tests/unit/test_analyze.py b/clang/tools/scan-build-py/tests/unit/test_analyze.py
index 481cc0c0993..5cfc1212663 100644
--- a/clang/tools/scan-build-py/tests/unit/test_analyze.py
+++ b/clang/tools/scan-build-py/tests/unit/test_analyze.py
@@ -4,4 +4,19 @@
# This file is distributed under the University of Illinois Open Source
# License. See LICENSE.TXT for details.
+import libear
import libscanbuild.analyze as sut
+import unittest
+
+class ReportDirectoryTest(unittest.TestCase):
+
+ # Test that successive report directory names ascend in lexicographic
+ # order. This is required so that report directories from two runs of
+ # scan-build can be easily matched up to compare results.
+ def test_directory_name_comparison(self):
+ with libear.TemporaryDirectory() as tmpdir, \
+ sut.report_directory(tmpdir, False) as report_dir1, \
+ sut.report_directory(tmpdir, False) as report_dir2, \
+ sut.report_directory(tmpdir, False) as report_dir3:
+ self.assertLess(report_dir1, report_dir2)
+ self.assertLess(report_dir2, report_dir3)
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