XXX:test: Start enum tests.

Author: lkorenc

test/vast/Conversion/enum-a.c

@@ -0,0 +1,18 @@
+// RUN: %vast-front -vast-snapshot-at="hl-lower-enums"
+// RUN: cat %s.hl-lower-enums | %file-check %s -check-prefix=ENUM
+
+enum E : int {
+    E_a = 0,
+    E_b = 1
+};
+
+int main() {
+
+    int a = E_a;
+
+    enum E b = E_a;
+
+    enum E c = 0;
+
+    enum E d = a;
+}