test: tighten device pair assertions

extensions/device-pair/index.test.ts

@@ -65,7 +65,14 @@ import {
 import registerDevicePair from "./index.js";
 
 async function expectPathMissing(targetPath: string): Promise<void> {
-  await expect(fs.access(targetPath)).rejects.toMatchObject({ code: "ENOENT" });
+  let error: unknown;
+  try {
+    await fs.access(targetPath);
+  } catch (caught) {
+    error = caught;
+  }
+  expect(error).toBeInstanceOf(Error);
+  expect((error as NodeJS.ErrnoException).code).toBe("ENOENT");
 }
 
 afterAll(() => {
@@ -492,8 +499,19 @@ describe("device-pair /pair qr", () => {
     expect(caption).toContain("If this QR code leaks, run /pair cleanup immediately.");
     const mediaUrl = requireMediaUrl(opts);
     expect(mediaUrl).toMatch(/pair-qr\.png$/);
-    expect(opts.mediaLocalRoots).toEqual([path.dirname(mediaUrl)]);
-    expect(opts).toMatchObject(testCase.expectedOpts);
+    expect(opts).toEqual({
+      cfg: {
+        gateway: {
+          auth: {
+            mode: "token",
+            token: "gateway-token",
+          },
+        },
+      },
+      mediaUrl,
+      mediaLocalRoots: [path.dirname(mediaUrl)],
+      ...testCase.expectedOpts,
+    });
     expect(sentPng).toBe("fakepng");
     await expectPathMissing(mediaUrl);
     expect(text).toContain("QR code sent above.");