1 files changed, 192 insertions, 14 deletions

diff --git a/tests/sync/historic_sync.rs b/tests/sync/historic_sync.rs
index d13886f..c388a7f 100644
--- a/tests/sync/historic_sync.rs
+++ b/tests/sync/historic_sync.rs
@@ -32,11 +32,8 @@ async fn test_bootstrap_syncs_existing_layer2_events() {
         .kind(Kind::Custom(KIND_REPOSITORY_STATE))
         .author(result.maintainer_keys.public_key());
 
-    let synced = wait_for_event_on_relay(
-        result.syncing_relay.url(),
-        filter,
-        Duration::from_secs(5)
-    ).await;
+    let synced =
+        wait_for_event_on_relay(result.syncing_relay.url(), filter, Duration::from_secs(5)).await;
 
     // Cleanup
     result.syncing_relay.stop().await;
@@ -73,8 +70,9 @@ async fn test_relay_replays_events_after_restart() {
     let synced_first = wait_for_event_on_relay(
         result.syncing_relay.url(),
         filter.clone(),
-        Duration::from_secs(5)
-    ).await;
+        Duration::from_secs(5),
+    )
+    .await;
 
     println!("First sync check: {}", synced_first);
 
@@ -96,11 +94,8 @@ async fn test_relay_replays_events_after_restart() {
     tokio::time::sleep(Duration::from_secs(2)).await;
 
     // Verify announcement is available on restarted syncing relay
-    let synced_after_restart = wait_for_event_on_relay(
-        syncing_new.url(),
-        filter,
-        Duration::from_secs(5)
-    ).await;
+    let synced_after_restart =
+        wait_for_event_on_relay(syncing_new.url(), filter, Duration::from_secs(5)).await;
 
     // Cleanup
     syncing_new.stop().await;
@@ -220,7 +215,11 @@ async fn test_history_sync_without_negentropy() {
 
     // Start source relay
     let source = TestRelay::start().await;
-    println!("Source started at {} (domain: {})", source.url(), source.domain());
+    println!(
+        "Source started at {} (domain: {})",
+        source.url(),
+        source.domain()
+    );
 
     // Create keys
     let keys = Keys::generate();
@@ -290,4 +289,183 @@ async fn test_history_sync_without_negentropy() {
         announcement_id
     );
     println!("SUCCESS: History sync works without negentropy (using REQ+EOSE fallback)");
-}
\ No newline at end of file
+}
+
+/// Test: Pagination for large result sets without negentropy
+///
+/// Note: this only actually tests pagination if we temporary settings (PAGINATION_THRESHOLD=7, filter limit=10),
+/// otherwise multiple pages aren't required to sync all events.
+///
+/// This tests that historic sync correctly handles many events
+/// when negentropy is disabled and pagination logic may be triggered.
+///
+/// Scenario:
+/// 1. Pre-allocate port for syncing relay to get its domain
+/// 2. Start source relay
+/// 3. Create repository announcement listing both relay domains
+/// 4. Create 40 issue events (enough to trigger pagination with limit=10, threshold=7)
+/// 5. Send all events to source relay BEFORE syncing relay starts
+/// 6. Start syncing relay with negentropy DISABLED (forces REQ+EOSE)
+/// 7. Verify all 40 issues synced correctly
+///
+#[tokio::test]
+#[ignore]
+async fn test_pagination_for_large_historic_sync() {
+    // Pre-allocate syncing relay port to get its domain
+    let syncing_port = TestRelay::find_free_port();
+    let syncing_domain = format!("127.0.0.1:{}", syncing_port);
+    println!("Pre-allocated syncing relay domain: {}", syncing_domain);
+
+    // Start source relay
+    let source = TestRelay::start().await;
+    println!(
+        "Source started at {} (domain: {})",
+        source.url(),
+        source.domain()
+    );
+
+    // Create keys for repository owner
+    let keys = Keys::generate();
+    let repo_id = "test-repo-pagination";
+
+    // Create repository announcement listing BOTH relay domains
+    let announcement =
+        create_repo_announcement(&keys, &[&source.domain(), &syncing_domain], repo_id);
+    println!(
+        "Created announcement {} for repo '{}'",
+        announcement.id, repo_id
+    );
+
+    // Create 40 issue events to test pagination (with limit=10, threshold=7)
+    let repo_coord = format!(
+        "{}:{}:{}",
+        KIND_REPOSITORY_STATE,
+        keys.public_key().to_hex(),
+        repo_id
+    );
+
+    let mut issue_events = Vec::new();
+    for i in 1..=40 {
+        let issue = build_layer2_issue_event(
+            &keys,
+            &repo_coord,
+            &format!("Issue #{} - Testing large sync", i),
+        )
+        .expect("Failed to create issue event");
+        issue_events.push(issue);
+    }
+    println!(
+        "Created {} issue events for pagination test",
+        issue_events.len()
+    );
+
+    // Send announcement to source (must be accepted first for issues to reference it)
+    let client = TestClient::new(source.url(), keys.clone())
+        .await
+        .expect("Failed to connect to source");
+
+    client
+        .send_event(&announcement)
+        .await
+        .expect("Failed to send announcement to source");
+    println!("Announcement sent to source");
+
+    // Wait for announcement to be stored
+    tokio::time::sleep(Duration::from_millis(200)).await;
+
+    // Send all 40 issue events to source (before syncing relay starts)
+    println!("Sending {} issues to source relay...", issue_events.len());
+    for (i, issue) in issue_events.iter().enumerate() {
+        client
+            .send_event(issue)
+            .await
+            .unwrap_or_else(|e| panic!("Failed to send issue #{}: {}", i + 1, e));
+
+        // Progress indicator every 50 events
+        if (i + 1) % 50 == 0 {
+            println!("  Sent {} / {} issues", i + 1, issue_events.len());
+        }
+    }
+    println!(
+        "All {} issues sent to source (events exist BEFORE syncing relay connects)",
+        issue_events.len()
+    );
+
+    client.disconnect().await;
+
+    // Wait to ensure all events are stored
+    tokio::time::sleep(Duration::from_millis(500)).await;
+
+    // NOW start syncing relay on the reserved port, with negentropy DISABLED
+    // This forces it to use REQ+EOSE historic sync with pagination
+    let syncing = TestRelay::start_on_port_with_options(
+        syncing_port,
+        Some(source.url().into()),
+        true, // disable_negentropy = true (force REQ+EOSE)
+    )
+    .await;
+    println!(
+        "Syncing relay started at {} (domain: {}) - negentropy DISABLED, pagination enabled with limit=10, threshold=7",
+        syncing.url(),
+        syncing.domain()
+    );
+
+    // Wait for historic sync with pagination to complete
+    println!("Waiting for historic sync with pagination to complete...");
+    tokio::time::sleep(Duration::from_secs(8)).await;
+
+    // Verify announcement synced
+    let announcement_filter = Filter::new()
+        .kind(Kind::Custom(KIND_REPOSITORY_STATE))
+        .author(keys.public_key());
+
+    let announcement_synced =
+        wait_for_event_on_relay(syncing.url(), announcement_filter, Duration::from_secs(3)).await;
+
+    // Verify ALL 40 issues synced
+    let issues_filter = Filter::new()
+        .kind(Kind::Custom(KIND_ISSUE))
+        .author(keys.public_key());
+
+    // Query for all issues
+    let temp_keys = Keys::generate();
+    let client = Client::new(temp_keys);
+    client
+        .add_relay(syncing.url())
+        .await
+        .expect("Failed to add syncing relay to client");
+    client.connect().await;
+
+    // Wait for connection
+    tokio::time::sleep(Duration::from_millis(500)).await;
+
+    let synced_issues = client
+        .fetch_events(issues_filter, Duration::from_secs(5))
+        .await
+        .expect("Failed to fetch issues from syncing relay");
+
+    let synced_count = synced_issues.len();
+    println!("Synced {} out of 40 expected issues", synced_count);
+
+    client.disconnect().await;
+
+    // Cleanup
+    syncing.stop().await;
+    source.stop().await;
+
+    // Assertions
+    assert!(
+        announcement_synced,
+        "Repository announcement should have synced"
+    );
+
+    assert_eq!(
+        synced_count, 40,
+        "All 40 issues should have synced via pagination (limit=10, threshold=7 should trigger multiple pages)"
+    );
+
+    println!(
+        "SUCCESS: Pagination worked correctly - all {} issues synced",
+        synced_count
+    );
+}