first pass of merging in warp (doesn't build)

crates/galaxy_server_client/src/network_logging_tests.rs

@@ -0,0 +1,71 @@
+use galaxyui_core::App;
+
+use super::{NETWORK_LOGGING_MAX_ITEMS, NetworkLogItem, NetworkLogModel};
+
+#[test]
+fn empty_snapshot_is_empty_string() {
+    App::test((), |app| async move {
+        let model = app.add_singleton_model(|_| NetworkLogModel::default());
+        model.read(&app, |model, _| {
+            assert_eq!(model.snapshot_text(), "");
+            assert_eq!(model.len(), 0);
+        });
+    });
+}
+
+#[test]
+fn snapshot_joins_items_with_newlines() {
+    App::test((), |mut app| async move {
+        let model = app.add_singleton_model(|_| NetworkLogModel::default());
+        model.update(&mut app, |model, ctx| {
+            model.push(NetworkLogItem::from_string("first"), ctx);
+            model.push(NetworkLogItem::from_string("second"), ctx);
+            model.push(NetworkLogItem::from_string("third"), ctx);
+        });
+        model.read(&app, |model, _| {
+            assert_eq!(model.snapshot_text(), "first\nsecond\nthird");
+            assert_eq!(model.len(), 3);
+        });
+    });
+}
+
+#[test]
+fn push_beyond_capacity_drops_oldest() {
+    App::test((), |mut app| async move {
+        let model = app.add_singleton_model(|_| NetworkLogModel::default());
+        // Push exactly the capacity; the snapshot should contain all items
+        // and the count should equal the capacity.
+        model.update(&mut app, |model, ctx| {
+            for i in 0..NETWORK_LOGGING_MAX_ITEMS {
+                model.push(NetworkLogItem::from_string(format!("item-{i}")), ctx);
+            }
+        });
+        model.read(&app, |model, _| {
+            assert_eq!(model.len(), NETWORK_LOGGING_MAX_ITEMS);
+            // The oldest item is still present when we are exactly at capacity.
+            assert!(model.snapshot_text().starts_with("item-0\n"));
+        });
+
+        // Push one more: the oldest item should be evicted so the store stays
+        // at capacity, and the snapshot should start at item-1 now.
+        model.update(&mut app, |model, ctx| {
+            model.push(NetworkLogItem::from_string("overflow"), ctx);
+        });
+        model.read(&app, |model, _| {
+            assert_eq!(model.len(), NETWORK_LOGGING_MAX_ITEMS);
+            assert!(!model.snapshot_text().contains("item-0\n"));
+            assert!(model.snapshot_text().starts_with("item-1\n"));
+            assert!(model.snapshot_text().ends_with("\noverflow"));
+        });
+
+        // Pushing many additional items keeps the store at capacity.
+        model.update(&mut app, |model, ctx| {
+            for i in 0..10 {
+                model.push(NetworkLogItem::from_string(format!("extra-{i}")), ctx);
+            }
+        });
+        model.read(&app, |model, _| {
+            assert_eq!(model.len(), NETWORK_LOGGING_MAX_ITEMS);
+        });
+    });
+}