fix(#129): reveal the bug

(cherry picked from commit b60b9345)

runtime/gdev/tests/common/mod.rs

@@ -141,6 +141,16 @@ impl ExtBuilder {
         self
     }*/
 
+    pub fn change_parameters<
+        F: Fn(&mut pallet_duniter_test_parameters::Parameters<u32, u32, Balance>) -> (),
+    >(
+        mut self,
+        f: F,
+    ) -> Self {
+        f(&mut self.parameters);
+        self
+    }
+
     pub fn build(self) -> sp_io::TestExternalities {
         let Self {
             initial_accounts,

runtime/gdev/tests/integration_tests.rs

@@ -1227,3 +1227,14 @@ fn test_new_account_linked() {
         );
     })
 }
+#[test]
+fn smith_data_problem() {
+    ExtBuilder::new(1, 3, 4)
+        .change_parameters(|parameters| {
+            parameters.smith_cert_validity_period = 3;
+        })
+        .build()
+        .execute_with(|| {
+            run_to_block(4);
+        });
+}