test: cover compatibility method field returns

tests/test_validate_typecheck_diagnostics.py

@@ -107,6 +107,10 @@ class ValidateTypecheckDiagnosticsTests(unittest.TestCase):
         self.assertIn("tests/typecheck_method_field_return_bad.claro", MODULE.EXPECTED)
         self.assertIn("tests/typecheck_method_field_return_good.claro", MODULE.EXPECTED_OK)
 
+    def test_includes_compatibility_method_field_return_fixtures(self):
+        self.assertIn("tests/typecheck_method_compat_field_return_bad.claro", MODULE.EXPECTED)
+        self.assertIn("tests/typecheck_method_compat_field_return_good.claro", MODULE.EXPECTED_OK)
+
     def test_includes_compatibility_method_return_success_fixture(self):
         self.assertIn("tests/typecheck_method_compat_return_good.claro", MODULE.EXPECTED_OK)
 

tests/typecheck_method_compat_field_return_bad.claro

@@ -0,0 +1,7 @@
+CLASS Player
+    HAS score NUMBER
+
+    TEACH label TAKES amount RETURNS TEXT
+        RETURN score
+    LEARNED
+ENDCLASS

tests/typecheck_method_compat_field_return_good.claro

@@ -0,0 +1,10 @@
+CLASS Player
+    HAS score NUMBER
+
+    TEACH score_value TAKES amount RETURNS NUMBER
+        RETURN score
+    LEARNED
+ENDCLASS
+
+NEW Player player
+CALL player.score_value WITH 4