check-all invokes check-clang-python which prints the annoying message:
LIBCLANG TOOLING ERROR: fixed-compilation-database: Error while opening fixed database: No such file or directory
json-compilation-database: Error while opening JSON database: No such file or directory
Let's fix it now with os.dup os.dup2 trick.
llvm-svn: 357562
def test_create_fail(self):
"""Check we fail loading a database with an assertion"""
path = os.path.dirname(__file__)
+
+ # clang_CompilationDatabase_fromDirectory calls fprintf(stderr, ...)
+ # Suppress its output.
+ stderr = os.dup(2)
+ with open(os.devnull, 'wb') as null:
+ os.dup2(null.fileno(), 2)
with self.assertRaises(CompilationDatabaseError) as cm:
cdb = CompilationDatabase.fromDirectory(path)
+ os.dup2(stderr, 2)
+ os.close(stderr)
+
e = cm.exception
self.assertEqual(e.cdb_error,
CompilationDatabaseError.ERROR_CANNOTLOADDATABASE)