Use raw string

Author: ayushjariyal

python/grass/pytest/tests/test_pytest_assertions.py

@@ -7,5 +7,5 @@ def test_raster_exists(session):
     gs.run_command("r.mapcalc", expression="test_map = 1", env=session)
 
     raster_exists("test_map", env=session)
-    with pytest.raises(AssertionError, match="Raster map 'missing_map' not found."):
+    with pytest.raises(AssertionError, match=r"missing_map"):
         raster_exists("missing_map", env=session)