Initial commit

test/helpers/memoryPlanStore.ts

@@ -0,0 +1,41 @@
+import type { PlanStateStore } from '../../src/scenario/engine/IndexedDbPlanStore.js';
+
+/**
+ * In-memory PlanStateStore that survives across RudderClient instances — lets a
+ * test simulate a page reload: drive scenario A on one client, construct a fresh
+ * client sharing the same `backing`, call `scenarios.restore()`, and assert the
+ * run resumed mid-DAG.
+ */
+export function createMemoryPlanStore(backing: { value: string | null } = { value: null }): PlanStateStore {
+  return {
+    get state() {
+      return backing.value;
+    },
+    set state(v: string | null) {
+      backing.value = v;
+    },
+    async load() {
+      /* state already in `backing` */
+    },
+    async save(s: string | null) {
+      backing.value = s;
+    },
+  };
+}
+
+/** Deterministic, collision-free crypto.randomUUID() stub for scenario run IDs. */
+export function stubDeterministicUuid(): void {
+  let n = 0;
+  const existing = (globalThis as { crypto?: Crypto }).crypto ?? ({} as Crypto);
+  Object.defineProperty(globalThis, 'crypto', {
+    configurable: true,
+    value: {
+      ...existing,
+      randomUUID: () => {
+        n += 1;
+        const hex = n.toString(16).padStart(12, '0');
+        return `00000000-0000-4000-a000-${hex}` as `${string}-${string}-${string}-${string}-${string}`;
+      },
+    },
+  });
+}