Add tests for positive reports

crates/lox-distributor/src/troll_patrol_handler.rs

@@ -334,10 +334,9 @@ mod tests {
         );
 
         // Invalid country code
-        let mut invalid_report_2 =
-            NegativeReport::from_bridgeline(bridges[1], "ru".to_string(), BridgeDistributor::Lox)
+        let invalid_report_2 =
+            NegativeReport::from_bridgeline(bridges[1], "xx".to_string(), BridgeDistributor::Lox)
                 .to_serializable_report();
-        invalid_report_2.country = "xx".to_string();
         reports.insert(
             serde_json::to_string(&invalid_report_2).unwrap(),
             num_invalid_report_2,
@@ -359,7 +358,7 @@ mod tests {
         reports.insert(invalid_report_3.to_json(), num_invalid_report_3);
 
         // Incorrect BridgeLine hash
-        let mut invalid_report_4 = NegativeReport::new(
+        let invalid_report_4 = NegativeReport::new(
             bridges[0].fingerprint,
             ProofOfBridgeKnowledge::HashOfBridgeLine(HashOfBridgeLine::new(&BridgeLine::default())),
             "ru".to_string(),
@@ -387,4 +386,95 @@ mod tests {
         let count: u32 = body_to_string(response).await.parse().unwrap();
         assert_eq!(num_report_1 + num_report_2 + num_report_3, count);
     }
+
+    #[tokio::test]
+    async fn test_positive_reports() {
+        let mut th = TestHarness::new();
+        th.generate_bridge_infos();
+        let tpc = TpClientMock {};
+        let mut Htables = HashMap::<u32, RistrettoBasepointTable>::new();
+
+        // Get new level 3 credential
+        let cred = get_new_credential(&mut th).await;
+        let cred = level_up(&mut th, &cred).await;
+        let cred = level_up(&mut th, &cred).await;
+        let cred = level_up(&mut th, &cred).await;
+
+        th.generate_bridge_infos();
+
+        let mut ba = th.context.ba.lock().unwrap();
+
+        // Get bucket
+        let (id, key) = bridge_table::from_scalar(cred.bucket).unwrap();
+        let encbuckets = ba.enc_bridge_table();
+        let bucket =
+            bridge_table::BridgeTable::decrypt_bucket(id, &key, encbuckets.get(&id).unwrap())
+                .unwrap();
+        let bridges = bucket.0;
+
+        // Create a positive report for each bridge in bucket
+        let mut reports = Vec::<SerializablePositiveReport>::new();
+        for bridge in bridges {
+            let report = PositiveReport::from_lox_credential(
+                bridge.fingerprint,
+                None,
+                &cred,
+                &ba.lox_pub,
+                "ru".to_string(),
+            );
+            reports.push(report.to_serializable_report());
+        }
+        assert_eq!(reports.len(), 3);
+
+        // Check that reports with invalid fields are not counted
+
+        // Date in the future
+        let mut invalid_report_1 = PositiveReport::from_lox_credential(
+            bridges[0].fingerprint,
+            None,
+            &cred,
+            &ba.lox_pub,
+            "ru".to_string(),
+        );
+        invalid_report_1.date = invalid_report_1.date + 2;
+        reports.push(invalid_report_1.to_serializable_report());
+
+        // Invalid country code
+        let invalid_report_2 = PositiveReport::from_lox_credential(
+            bridges[1].fingerprint,
+            None,
+            &cred,
+            &ba.lox_pub,
+            "xx".to_string(),
+        );
+        reports.push(invalid_report_2.to_serializable_report());
+
+        // Check that well-formed reports with incorrect bridge data are not counted
+
+        let mut hasher = Sha1::new();
+        hasher.update([0; 20]);
+        let empty_bridgeline_fingerprint: [u8; 20] = hasher.finalize().into();
+
+        // Unknown bridge fingerprint
+        let mut invalid_report_3 = PositiveReport::from_lox_credential(
+            bridges[2].fingerprint,
+            None,
+            &cred,
+            &ba.lox_pub,
+            "ru".to_string(),
+        );
+        invalid_report_3.fingerprint = empty_bridgeline_fingerprint;
+        reports.push(invalid_report_3.to_serializable_report());
+
+        // Release lock so BA can be used to verify reports below
+        drop(ba);
+
+        let request = tpc.verifypositive(reports);
+        let response = handle(th.context.clone(), &mut Htables, request)
+            .await
+            .unwrap();
+        assert_eq!(response.status(), StatusCode::OK);
+        let count: usize = body_to_string(response).await.parse().unwrap();
+        assert_eq!(count, lox_library::bridge_table::MAX_BRIDGES_PER_BUCKET);
+    }
 }