Add test for problem returning const values.

Author: adetaylor

integration-tests/tests/integration_test.rs

@@ -12089,6 +12089,28 @@ fn test_issue_1170() {
     run_test("", hdr, quote! {}, &["Arch"], &[]);
 }
 
+#[ignore] // https://github.com/google/autocxx/issues/1191
+#[test]
+fn test_return_const_int() {
+    let hdr = indoc! {
+        "inline const int get_value() {
+            return 3;
+        }"
+    };
+    run_test("", hdr, quote! {}, &["get_value"], &[]);
+}
+
+#[test]
+fn test_return_const_struct() {
+    let hdr = indoc! {
+        "struct A { int a; };
+        inline const A get_value() {
+            return A { 3 };
+        }"
+    };
+    run_test("", hdr, quote! {}, &["get_value", "A"], &[]);
+}
+
 // https://github.com/google/autocxx/issues/774
 #[test]
 fn test_virtual_methods() {