1 files changed, 13 insertions, 0 deletions
diff --git a/python/mozperftest/mozperftest/tests/test_constant.py b/python/mozperftest/mozperftest/tests/test_constant.py
new file mode 100644
index 0000000000..99821f9680
--- /dev/null
+++ b/python/mozperftest/mozperftest/tests/test_constant.py
@@ -0,0 +1,13 @@
+import mozunit
+
+from mozperftest.metrics.notebook.constant import Constant
+from mozperftest.metrics.notebook.transforms.single_json import SingleJsonRetriever
+
+
+def test_predefined_transformers():
+    tfms = Constant().predefined_transformers
+    assert SingleJsonRetriever.__name__ in tfms
+
+
+if __name__ == "__main__":
+    mozunit.main()