diff --git a/src/infra/gemini-auth.test.ts b/src/infra/gemini-auth.test.ts
new file mode 100644
index 00000000000..6e496f75ec2
--- /dev/null
+++ b/src/infra/gemini-auth.test.ts
@@ -0,0 +1,34 @@
+import { describe, expect, it } from "vitest";
+import { parseGeminiAuth } from "./gemini-auth.js";
+
+describe("parseGeminiAuth", () => {
+  it("returns bearer auth for OAuth JSON tokens", () => {
+    expect(parseGeminiAuth('{"token":"oauth-token","projectId":"demo"}')).toEqual({
+      headers: {
+        Authorization: "Bearer oauth-token",
+        "Content-Type": "application/json",
+      },
+    });
+  });
+
+  it("falls back to API key auth for invalid or unusable OAuth payloads", () => {
+    expect(parseGeminiAuth('{"token":"","projectId":"demo"}')).toEqual({
+      headers: {
+        "x-goog-api-key": '{"token":"","projectId":"demo"}',
+        "Content-Type": "application/json",
+      },
+    });
+    expect(parseGeminiAuth("{not-json}")).toEqual({
+      headers: {
+        "x-goog-api-key": "{not-json}",
+        "Content-Type": "application/json",
+      },
+    });
+    expect(parseGeminiAuth(' {"token":"oauth-token"}')).toEqual({
+      headers: {
+        "x-goog-api-key": ' {"token":"oauth-token"}',
+        "Content-Type": "application/json",
+      },
+    });
+  });
+});
diff --git a/src/infra/pairing-files.test.ts b/src/infra/pairing-files.test.ts
new file mode 100644
index 00000000000..8f891036956
--- /dev/null
+++ b/src/infra/pairing-files.test.ts
@@ -0,0 +1,85 @@
+import { describe, expect, it, vi } from "vitest";
+import {
+  pruneExpiredPending,
+  resolvePairingPaths,
+  upsertPendingPairingRequest,
+} from "./pairing-files.js";
+
+describe("pairing file helpers", () => {
+  it("resolves pairing file paths from explicit base dirs", () => {
+    expect(resolvePairingPaths("/tmp/openclaw-state", "devices")).toEqual({
+      dir: "/tmp/openclaw-state/devices",
+      pendingPath: "/tmp/openclaw-state/devices/pending.json",
+      pairedPath: "/tmp/openclaw-state/devices/paired.json",
+    });
+  });
+
+  it("prunes only entries older than the ttl", () => {
+    const pendingById = {
+      stale: { ts: 10, requestId: "stale" },
+      edge: { ts: 50, requestId: "edge" },
+      fresh: { ts: 70, requestId: "fresh" },
+    };
+
+    pruneExpiredPending(pendingById, 100, 50);
+
+    expect(pendingById).toEqual({
+      edge: { ts: 50, requestId: "edge" },
+      fresh: { ts: 70, requestId: "fresh" },
+    });
+  });
+
+  it("reuses existing pending requests without persisting again", async () => {
+    const persist = vi.fn(async () => undefined);
+    const existing = { requestId: "req-1", deviceId: "device-1", ts: 1 };
+    const pendingById = { "req-1": existing };
+
+    await expect(
+      upsertPendingPairingRequest({
+        pendingById,
+        isExisting: (pending) => pending.deviceId === "device-1",
+        createRequest: vi.fn(() => ({ requestId: "req-2", deviceId: "device-1", ts: 2 })),
+        isRepair: false,
+        persist,
+      }),
+    ).resolves.toEqual({
+      status: "pending",
+      request: existing,
+      created: false,
+    });
+    expect(persist).not.toHaveBeenCalled();
+  });
+
+  it("creates and persists new pending requests with the repair flag", async () => {
+    const persist = vi.fn(async () => undefined);
+    const createRequest = vi.fn((isRepair: boolean) => ({
+      requestId: "req-2",
+      deviceId: "device-2",
+      ts: 2,
+      isRepair,
+    }));
+    const pendingById: Record<
+      string,
+      { requestId: string; deviceId: string; ts: number; isRepair: boolean }
+    > = {};
+
+    await expect(
+      upsertPendingPairingRequest({
+        pendingById,
+        isExisting: (pending) => pending.deviceId === "device-2",
+        createRequest,
+        isRepair: true,
+        persist,
+      }),
+    ).resolves.toEqual({
+      status: "pending",
+      request: { requestId: "req-2", deviceId: "device-2", ts: 2, isRepair: true },
+      created: true,
+    });
+    expect(createRequest).toHaveBeenCalledWith(true);
+    expect(persist).toHaveBeenCalledOnce();
+    expect(pendingById).toEqual({
+      "req-2": { requestId: "req-2", deviceId: "device-2", ts: 2, isRepair: true },
+    });
+  });
+});