diff --git a/test/test_api/test_call_signatures.py b/test/test_api/test_call_signatures.py
index 5114f7e2..602e8c4f 100644
--- a/test/test_api/test_call_signatures.py
+++ b/test/test_api/test_call_signatures.py
@@ -401,87 +401,88 @@ code3 = 'def h(u, /, v, *args, x=1, y): pass'
 code4 = 'def i(u, /, v, *args, x=1, y, **kwargs): pass'
 
 
-@pytest.mark.parametrize(
-    'code, call, expected_index', [
-        # No *args, **kwargs
-        (code1, 'f(', 0),
-        (code1, 'f(a', 0),
-        (code1, 'f(a,', 1),
-        (code1, 'f(a,b', 1),
-        (code1, 'f(a,b,', 2),
-        (code1, 'f(a,b,c', None),
-        (code1, 'f(a,b,a', 2),
-        (code1, 'f(a,b,a=', None),
-        (code1, 'f(a,b,abc', 2),
-        (code1, 'f(a,b,abc=(', 2),
-        (code1, 'f(a,b,abc=(f,1,2,3', 2),
-        (code1, 'f(a,b,abd', 3),
-        (code1, 'f(a,b,x', 4),
-        (code1, 'f(a,b,xy', 4),
-        (code1, 'f(a,b,xyz=', 4),
-        (code1, 'f(a,b,xy=', None),
-        (code1, 'f(u=', None),
-        (code1, 'f(v=', 1),
+_calls = [
+    # No *args, **kwargs
+    (code1, 'f(', 0),
+    (code1, 'f(a', 0),
+    (code1, 'f(a,', 1),
+    (code1, 'f(a,b', 1),
+    (code1, 'f(a,b,', 2),
+    (code1, 'f(a,b,c', None),
+    (code1, 'f(a,b,a', 2),
+    (code1, 'f(a,b,a=', None),
+    (code1, 'f(a,b,abc', 2),
+    (code1, 'f(a,b,abc=(', 2),
+    (code1, 'f(a,b,abc=(f,1,2,3', 2),
+    (code1, 'f(a,b,abd', 3),
+    (code1, 'f(a,b,x', 4),
+    (code1, 'f(a,b,xy', 4),
+    (code1, 'f(a,b,xyz=', 4),
+    (code1, 'f(a,b,xy=', None),
+    (code1, 'f(u=', None),
+    (code1, 'f(v=', 1),
 
-        # **kwargs
-        (code2, 'g(a,b,a', 2),
-        (code2, 'g(a,b,abc', 2),
-        (code2, 'g(a,b,abd', 3),
-        (code2, 'g(a,b,arr', 5),
-        (code2, 'g(a,b,xy', 4),
-        (code2, 'g(a,b,xyz=', 4),
-        (code2, 'g(a,b,xy=', 5),
-        (code2, 'g(a,b,abc=1,abd=4,', 4),
-        (code2, 'g(a,b,abc=1,xyz=3,abd=4,', 5),
-        (code2, 'g(a,b,abc=1,abd=4,lala', 5),
-        (code2, 'g(a,b,abc=1,abd=4,lala=', 5),
-        (code2, 'g(a,b,abc=1,abd=4,abd=', 5),
-        (code2, 'g(a,b,kw', 5),
-        (code2, 'g(a,b,kwargs=', 5),
-        (code2, 'g(u=', 5),
-        (code2, 'g(v=', 1),
+    # **kwargs
+    (code2, 'g(a,b,a', 2),
+    (code2, 'g(a,b,abc', 2),
+    (code2, 'g(a,b,abd', 3),
+    (code2, 'g(a,b,arr', 5),
+    (code2, 'g(a,b,xy', 4),
+    (code2, 'g(a,b,xyz=', 4),
+    (code2, 'g(a,b,xy=', 5),
+    (code2, 'g(a,b,abc=1,abd=4,', 4),
+    (code2, 'g(a,b,abc=1,xyz=3,abd=4,', 5),
+    (code2, 'g(a,b,abc=1,abd=4,lala', 5),
+    (code2, 'g(a,b,abc=1,abd=4,lala=', 5),
+    (code2, 'g(a,b,abc=1,abd=4,abd=', 5),
+    (code2, 'g(a,b,kw', 5),
+    (code2, 'g(a,b,kwargs=', 5),
+    (code2, 'g(u=', 5),
+    (code2, 'g(v=', 1),
 
-        # *args
-        (code3, 'h(a,b,c', 2),
-        (code3, 'h(a,b,c,', 2),
-        (code3, 'h(a,b,c,d', 2),
-        (code3, 'h(a,b,c,d[', 2),
-        (code3, 'h(a,b,c,(3,', 2),
-        (code3, 'h(a,b,c,(3,)', 2),
-        (code3, 'h(a,b,args=', None),
-        (code3, 'h(u,v=', 1),
-        (code3, 'h(u=', None),
-        (code3, 'h(u,*xxx', 1),
-        (code3, 'h(u,*xxx,*yyy', 1),
-        (code3, 'h(u,*[]', 1),
-        (code3, 'h(u,*', 1),
-        (code3, 'h(u,*, *', 1),
-        (code3, 'h(u,1,**', 3),
-        (code3, 'h(u,**y', 1),
-        (code3, 'h(u,x=2,**', 1),
-        (code3, 'h(u,x=2,**y', 1),
-        (code3, 'h(u,v=2,**y', 3),
-        (code3, 'h(u,x=2,**vv', 1),
+    # *args
+    (code3, 'h(a,b,c', 2),
+    (code3, 'h(a,b,c,', 2),
+    (code3, 'h(a,b,c,d', 2),
+    (code3, 'h(a,b,c,d[', 2),
+    (code3, 'h(a,b,c,(3,', 2),
+    (code3, 'h(a,b,c,(3,)', 2),
+    (code3, 'h(a,b,args=', None),
+    (code3, 'h(u,v=', 1),
+    (code3, 'h(u=', None),
+    (code3, 'h(u,*xxx', 1),
+    (code3, 'h(u,*xxx,*yyy', 1),
+    (code3, 'h(u,*[]', 1),
+    (code3, 'h(u,*', 1),
+    (code3, 'h(u,*, *', 1),
+    (code3, 'h(u,1,**', 3),
+    (code3, 'h(u,**y', 1),
+    (code3, 'h(u,x=2,**', 1),
+    (code3, 'h(u,x=2,**y', 1),
+    (code3, 'h(u,v=2,**y', 3),
+    (code3, 'h(u,x=2,**vv', 1),
 
-        # *args, **kwargs
-        (code4, 'i(a,b,c,d', 2),
-        (code4, 'i(a,b,c,d,e', 2),
-        (code4, 'i(a,b,c,d,e=', 5),
-        (code4, 'i(a,b,c,d,e=3', 5),
-        (code4, 'i(a,b,c,d=,x=', 3),
-        (code4, 'i(a,b,c,d=5,x=4', 3),
-        (code4, 'i(a,b,c,d=5,x=4,y', 4),
-        (code4, 'i(a,b,c,d=5,x=4,y=3,', 5),
-        (code4, 'i(a,b,c,d=5,y=4,x=3,', 5),
-        (code4, 'i(a,b,c,d=4,', 3),
-        (code4, 'i(a,b,c,x=1,d=,', 4),
+    # *args, **kwargs
+    (code4, 'i(a,b,c,d', 2),
+    (code4, 'i(a,b,c,d,e', 2),
+    (code4, 'i(a,b,c,d,e=', 5),
+    (code4, 'i(a,b,c,d,e=3', 5),
+    (code4, 'i(a,b,c,d=,x=', 3),
+    (code4, 'i(a,b,c,d=5,x=4', 3),
+    (code4, 'i(a,b,c,d=5,x=4,y', 4),
+    (code4, 'i(a,b,c,d=5,x=4,y=3,', 5),
+    (code4, 'i(a,b,c,d=5,y=4,x=3,', 5),
+    (code4, 'i(a,b,c,d=4,', 3),
+    (code4, 'i(a,b,c,x=1,d=,', 4),
 
-        # Error nodes
-        (code4, 'i(1, [a,b', 1),
-        (code4, 'i(1, [a,b=,', 2),
-        (code4, 'i(1, [a!b,', 2),
-    ]
-)
+    # Error nodes
+    (code4, 'i(1, [a,b', 1),
+    (code4, 'i(1, [a,b=,', 2),
+    (code4, 'i(1, [a!b,', 2),
+]
+
+
+@pytest.mark.parametrize('code, call, expected_index', _calls)
 def test_signature_index(skip_pre_python38, Script, code, call, expected_index):
     sig, = Script(code + '\n' + call).call_signatures()
     index = sig.index