D17487: [analyzer][scan-build-py] flag filter modification for compilation database creation

llvm-svn: 266726

1 files changed, 30 insertions, 0 deletions

diff --git a/clang/tools/scan-build-py/tests/unit/test_libear.py b/clang/tools/scan-build-py/tests/unit/test_libear.py
new file mode 100644
index 00000000000..f5b92802896
--- /dev/null
+++ b/clang/tools/scan-build-py/tests/unit/test_libear.py
@@ -0,0 +1,30 @@
+# -*- coding: utf-8 -*-
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+
+import libear as sut
+import unittest
+import os.path
+
+
+class TemporaryDirectoryTest(unittest.TestCase):
+    def test_creates_directory(self):
+        dirname = None
+        with sut.TemporaryDirectory() as tmpdir:
+            self.assertTrue(os.path.isdir(tmpdir))
+            dirname = tmpdir
+        self.assertIsNotNone(dirname)
+        self.assertFalse(os.path.exists(dirname))
+
+    def test_removes_directory_when_exception(self):
+        dirname = None
+        try:
+            with sut.TemporaryDirectory() as tmpdir:
+                self.assertTrue(os.path.isdir(tmpdir))
+                dirname = tmpdir
+                raise RuntimeError('message')
+        except:
+            self.assertIsNotNone(dirname)
+            self.assertFalse(os.path.exists(dirname))