test for compiler-research/cppyy-backend#175

Author: Vipul-Cariappa

test/test_templates.py

@@ -1189,6 +1189,32 @@ def test35_templated_callbacks(self):
         assert cppyy.gbl.dataframe_define_mock(cppyy.gbl.bar, 42, 11.11) == "bar(42, 11.110000)"
         assert cppyy.gbl.dataframe_define_mock(cppyy.gbl.baz["int", "double"], 33, 101.101, "hello") == "baz(33, 101.101000, \"hello\")"
 
+    def test37_enum_template_argument_function(self):
+        import cppyy
+        from cppyy import gbl
+
+        cppyy.cppdef(
+            r"""
+        enum What { NO, YES };
+
+        template <What E>
+        struct EE {
+            What w = E;
+        };
+
+        template <What E>
+        What get() {
+            return E;
+        }
+        """
+        )
+
+        assert gbl.EE[gbl.What.NO]().w == 0
+        assert gbl.EE[gbl.What.YES]().w == 1
+
+        assert gbl.get[gbl.What.NO]() == 0
+        assert gbl.get[gbl.What.YES]() == 1
+
 
 @mark.skipif((IS_MAC and IS_CLING), reason="setup class fails with OS X cling")
 class TestTEMPLATED_TYPEDEFS: