diff --git a/tests/conftest.py b/tests/conftest.py
index 23e3e06..dc5fb1a 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -103,6 +103,7 @@ def transformer():
             "simple": simple_rule,
             "multiline": multiline_rule,
             "echo": echo_rule,
+            "reprs": reprs_rule,
             "error": error_rule,
             "file_contents": file_contents,
         }
@@ -120,6 +121,10 @@ def multiline_rule(text=""):
     return f"Multiple\nLines {text}".strip()
 
 
+def reprs_rule(*data: Any) -> str:
+    return "\n".join(repr(item) for item in data)
+
+
 def echo_rule(value):
     return value
 
diff --git a/tests/transformer_test.py b/tests/transformer_test.py
index 49ec4f6..80136c3 100644
--- a/tests/transformer_test.py
+++ b/tests/transformer_test.py
@@ -44,13 +44,20 @@ def test_multiline_output_rule(transformer: TransdocTransformer):
     )
 
 
-def test_multiline_input_rule(transformer: TransdocTransformer):
+def test_multiline_bracket_input_rule(transformer: TransdocTransformer):
     assert (
         transformer.transform("Call: {{multiline[sample\ntext]}}", "<string>")
         == "Call: Multiple\nLines sample\ntext"
     )
 
 
+def test_multiline_python_fn_input_rule(transformer: TransdocTransformer):
+    assert (
+        transformer.transform("Call: {{reprs('sample',\n'text')}}", "<string>")
+        == "Call: 'sample'\n'text'"
+    )
+
+
 def test_rules_respect_indentation(transformer: TransdocTransformer):
     assert (
         transformer.transform(