vendor/clang/clang-trunk-r290819

1 files changed, 13 insertions, 0 deletions

diff --git a/tools/scan-build-py/tests/unit/test_report.py b/tools/scan-build-py/tests/unit/test_report.py
index 3f249ce2aa0c8..c82b5593e0dc7 100644
--- a/tools/scan-build-py/tests/unit/test_report.py
+++ b/tools/scan-build-py/tests/unit/test_report.py
@@ -146,3 +146,16 @@ class GetPrefixFromCompilationDatabaseTest(unittest.TestCase):
     def test_empty(self):
         self.assertEqual(
             sut.commonprefix([]), '')
+
+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)