cleanup of Enum conversion; additional test

test/basic/enum.sv

@@ -0,0 +1,56 @@
+typedef enum {
+    A_1, A_2, A_3
+} EnumA;
+
+typedef enum {
+    B_1 = 2, B_2 = 1, B_3 = 3
+} EnumB;
+
+typedef enum {
+    C_1 = 20, C_2 = 0, C_3 = 19
+} EnumC;
+
+typedef enum {
+    D_1 = 'h10, D_2, D_3
+} EnumD;
+
+typedef enum {
+    E_1, E_2 = 'h10, E_3, E_4, E_5 = 'b10, E_6
+} EnumE;
+
+`define PRINT(val) $display("%02d", val);
+
+module top;
+    EnumA dummyA;
+    EnumB dummyB;
+    EnumC dummyC;
+    EnumD dummyD;
+    EnumE dummyE;
+
+    initial begin
+
+        `PRINT(A_1)
+        `PRINT(A_2)
+        `PRINT(A_3)
+
+        `PRINT(B_1)
+        `PRINT(B_2)
+        `PRINT(B_3)
+
+        `PRINT(C_1)
+        `PRINT(C_2)
+        `PRINT(C_3)
+
+        `PRINT(D_1)
+        `PRINT(D_2)
+        `PRINT(D_3)
+
+        `PRINT(E_1)
+        `PRINT(E_2)
+        `PRINT(E_3)
+        `PRINT(E_4)
+        `PRINT(E_5)
+        `PRINT(E_6)
+
+    end
+endmodule