Publish static trace explorer: tests/core.test.mjs

tests/core.test.mjs

@@ -0,0 +1,16 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+import { parseTrace, compareBranch } from "../replay-core.js";
+
+const trace = { schema_version: "deltastore-replay-trace-v1", trace_id: "t", original_trajectory: [{event_id:"e1"},{event_id:"e2"}], checkpoints: [{checkpoint_id:"c1",event_id:"e2"}], branches: [{branch_id:"b",parent_checkpoint_id:"c1",events:[{event_id:"b1"}],final_outcome:{task_success:true}}], final_outcome:{task_success:false} };
+
+test("parses and compares a checkpoint branch", () => {
+  const parsed = parseTrace(trace);
+  const comparison = compareBranch(parsed, "b");
+  assert.equal(comparison.sharedPrefix.length, 2);
+  assert.equal(comparison.alternate[0].event_id, "b1");
+});
+
+test("rejects unsupported traces", () => {
+  assert.throws(() => parseTrace({ schema_version: "wrong" }));
+});