Adjust test inputs for proper GETTSIM params.

src/_gettsim_tests/test_data/namespaces/module1.py

@@ -1,17 +1,22 @@
 """Test namespace."""
 
 
-def f(a, b):
-    return a + b
+def f(module1_params, h):  # noqa: ARG001
+    return module1_params["a"] + module1_params["b"]
 
 
-def g(f, c):
-    return f + c
+def g(f, module1_params):
+    return f + module1_params["c"]
+
+
+def h():
+    return 1
 
 
 FUNCTIONS_MODULE1 = {
     "module1": {
         "f": f,
         "g": g,
+        "h": h,
     }
 }

src/_gettsim_tests/test_data/namespaces/module2.py

@@ -1,12 +1,12 @@
 """Test namespace."""
 
 
-def f(a, b):
-    return a + b
+def f(module2_params, g):  # noqa: ARG001
+    return module2_params["a"] + module2_params["b"]
 
 
-def g(module1__f, c):
-    return module1__f + c
+def g(module1__f, module2_params):
+    return module1__f + module2_params["c"]
 
 
 FUNCTIONS_MODULE2 = {

src/_gettsim_tests/test_namespaces.py

@@ -13,12 +13,12 @@
 }
 
 PARAMETERS = {
-    "module1": {
+    "module1_params": {
         "a": 1,
         "b": 1,
         "c": 1,
     },
-    "module2": {
+    "module2_params": {
         "a": 1,
         "b": 1,
         "c": 1,