Initial Commit

packages/networking/network/network-plugin-partition/tests/integration/partition.spec-conformance.test.ts

@@ -0,0 +1,57 @@
+import { describe, expect, it } from "@suaveplan/testing/runner";
+import {
+    MergeProtocol,
+    PartitionDetector,
+    QuorumResolver,
+    type Reconciler,
+} from "../../src/index.js";
+
+describe("partition end-to-end", () => {
+    it("detects split-brain, resolves quorum, and runs the merge", async () => {
+        const aliceDetector = new PartitionDetector({
+            meshId: "m",
+            localPeerId: "alice",
+            quorumRatio: 0.5,
+        });
+        aliceDetector.recordEpoch("bob", 1);
+
+        const charlieDetector = new PartitionDetector({
+            meshId: "m",
+            localPeerId: "charlie",
+            quorumRatio: 0.5,
+        });
+        charlieDetector.recordEpoch("dave", 1);
+
+        const aliceView = aliceDetector.getPartitionView();
+        const charlieView = charlieDetector.getPartitionView();
+        expect(aliceView.partitionId).not.toBe(charlieView.partitionId);
+
+        const resolver = new QuorumResolver({ strategy: "size" });
+        const winner = resolver.resolve([
+            { ...aliceView, reachablePeers: ["alice", "bob", "x"] },
+            { ...charlieView, reachablePeers: ["charlie"] },
+        ]);
+        expect(winner?.reachablePeers.length).toBe(3);
+
+        const reconciled: string[] = [];
+        const reg: Reconciler<unknown> = {
+            name: "registry",
+            reconcile: (auth, div) => {
+                reconciled.push(`${String(auth)}+${String(div)}`);
+                return auth;
+            },
+        };
+        const merge = new MergeProtocol({ reconcilers: [reg] });
+        await merge.merge(
+            aliceView,
+            charlieView,
+            new Map([
+                [
+                    "registry",
+                    { authoritative: "auth-state", divergent: "div-state" },
+                ],
+            ])
+        );
+        expect(reconciled).toEqual(["auth-state+div-state"]);
+    });
+});