Add parameter DPA testcase

Author: amykyta3

test/rdl_src/parameters.rdl

@@ -122,3 +122,33 @@ addrmap param_scope {
     rf_t #(.N(3)) rfY;
     rf_t rfZ;
 };
+
+
+//------------------------------------------------------------------------------
+
+addrmap param_dpa_scopes #(
+    string X = "top default"
+) {
+
+    reg param_reg #(
+        string X = "reg default"
+    ) {
+        desc = X;
+        name = X;
+        field {
+            desc = X;
+            name = X;
+        } f;
+    };
+
+    param_reg reg_default;
+    param_reg #(.X(X)) reg_override1;
+    param_reg #(.X("from inst")) reg_override2;
+
+    reg_default->name = "dpa1";
+    reg_default.f->name = "dpa2";
+    reg_override1->name = X;
+    reg_override1.f->name = X;
+    reg_override2->name = X;
+    reg_override2.f->name = X;
+};

test/test_parameters.py

@@ -191,6 +191,33 @@ def test_param_scope(self):
         self.assertEqual(ffY.width, 3)
         self.assertEqual(ffZ.width, 1)
 
+    def test_param_dpa_scopes(self):
+        root = self.compile(
+            ["rdl_src/parameters.rdl"],
+            "param_dpa_scopes"
+        )
+        top = root.top
+        d = top.find_by_path("reg_default")
+        df = top.find_by_path("reg_default.f")
+        o1 = top.find_by_path("reg_override1")
+        o1f = top.find_by_path("reg_override1.f")
+        o2 = top.find_by_path("reg_override2")
+        o2f = top.find_by_path("reg_override2.f")
+
+        self.assertEqual(d.get_property("desc"), "reg default")
+        self.assertEqual(df.get_property("desc"), "reg default")
+        self.assertEqual(o1.get_property("desc"), "top default")
+        self.assertEqual(o1f.get_property("desc"), "top default")
+        self.assertEqual(o2.get_property("desc"), "from inst")
+        self.assertEqual(o2f.get_property("desc"), "from inst")
+
+        self.assertEqual(d.get_property("name"), "dpa1")
+        self.assertEqual(df.get_property("name"), "dpa2")
+        self.assertEqual(o1.get_property("name"), "top default")
+        self.assertEqual(o1f.get_property("name"), "top default")
+        self.assertEqual(o2.get_property("name"), "top default")
+        self.assertEqual(o2f.get_property("name"), "top default")
+
     def test_err_ref_in_parameter(self):
         self.assertRDLCompileError(
             ["rdl_err_src/err_ref_in_parameter.rdl"],