fix(cli-node): keep every result in entity delete, not just the last (#5970)

cli/node/tests/platform-backend.test.ts

@@ -0,0 +1,52 @@
+/**
+ * Tests for the Platform backend (mem0 Platform API client).
+ */
+
+import { describe, it, expect, vi } from "vitest";
+import { PlatformBackend } from "../src/backend/platform.js";
+import { createDefaultConfig } from "../src/config.js";
+
+function makeBackend(): PlatformBackend {
+  // apiKey/baseUrl only build request headers; every test spies on _request,
+  // so no real network calls are made.
+  return new PlatformBackend(createDefaultConfig().platform);
+}
+
+describe("deleteEntities", () => {
+  it("returns all results keyed by entity type for a multi-entity delete", async () => {
+    const backend = makeBackend();
+    const responses: Record<string, unknown> = {
+      "/v2/entities/user/alice/": { message: "user deleted" },
+      "/v2/entities/agent/bob/": { message: "agent deleted" },
+    };
+    const spy = vi
+      // biome-ignore lint/suspicious/noExplicitAny: spying on a private method
+      .spyOn(backend as any, "_request")
+      .mockImplementation(async (_method: string, path: string) => responses[path]);
+
+    const result = await backend.deleteEntities({ userId: "alice", agentId: "bob" });
+
+    // Regression: previously only the last entity's response survived.
+    expect(result).toEqual({
+      user: { message: "user deleted" },
+      agent: { message: "agent deleted" },
+    });
+    expect(spy).toHaveBeenCalledTimes(2);
+  });
+
+  it("keys a single-entity delete by its type", async () => {
+    const backend = makeBackend();
+    // biome-ignore lint/suspicious/noExplicitAny: spying on a private method
+    vi.spyOn(backend as any, "_request").mockResolvedValue({ message: "user deleted" });
+
+    const result = await backend.deleteEntities({ userId: "alice" });
+    expect(result).toEqual({ user: { message: "user deleted" } });
+  });
+
+  it("throws when no entity id is provided", async () => {
+    const backend = makeBackend();
+    await expect(backend.deleteEntities({})).rejects.toThrow(
+      "At least one entity ID is required",
+    );
+  });
+});