test: guard msteams oauth mock calls

extensions/msteams/src/monitor-handler/inbound-media.test.ts

@@ -34,6 +34,22 @@ const baseParams = {
   log: { debug: vi.fn() },
 };
 
+function firstGraphMediaCall() {
+  const [call] = vi.mocked(downloadMSTeamsGraphMedia).mock.calls;
+  if (!call) {
+    throw new Error("expected Graph media download call");
+  }
+  return call[0];
+}
+
+function firstBotFrameworkAttachmentCall() {
+  const [call] = vi.mocked(downloadMSTeamsBotFrameworkAttachments).mock.calls;
+  if (!call) {
+    throw new Error("expected Bot Framework attachment download call");
+  }
+  return call[0];
+}
+
 describe("resolveMSTeamsInboundMedia graph fallback trigger", () => {
   it("triggers Graph fallback when HTML contains <attachment> tags", async () => {
     vi.mocked(downloadMSTeamsAttachments).mockResolvedValue([]);
@@ -133,7 +149,7 @@ describe("resolveMSTeamsInboundMedia graph fallback trigger", () => {
       ],
     });
 
-    const call = vi.mocked(downloadMSTeamsGraphMedia).mock.calls[0]?.[0];
+    const call = firstGraphMediaCall();
     // The monitor handler's logger is forwarded so graph.ts can report
     // message fetch failures instead of swallowing them (#51749).
     expect(call?.logger).toBe(log);
@@ -187,7 +203,7 @@ describe("resolveMSTeamsInboundMedia bot framework DM routing", () => {
     });
 
     expect(downloadMSTeamsBotFrameworkAttachments).toHaveBeenCalledTimes(1);
-    const call = vi.mocked(downloadMSTeamsBotFrameworkAttachments).mock.calls[0]?.[0];
+    const call = firstBotFrameworkAttachmentCall();
     expect(call?.serviceUrl).toBe(dmParams.serviceUrl);
     expect(call?.attachmentIds).toEqual(["att-0", "att-1"]);
     expect(downloadMSTeamsGraphMedia).not.toHaveBeenCalled();

extensions/msteams/src/oauth.test.ts

@@ -38,6 +38,14 @@ function responseJson(body: unknown, status = 200): Response {
   });
 }
 
+function firstFetchCall(fetchSpy: ReturnType<typeof vi.fn>): [string, RequestInit] {
+  const [call] = fetchSpy.mock.calls;
+  if (!call) {
+    throw new Error("expected fetch call");
+  }
+  return call as [string, RequestInit];
+}
+
 describe("generatePkce", () => {
   it("produces a 64-char hex verifier and a base64url SHA-256 challenge", () => {
     const { verifier, challenge } = generatePkce();
@@ -191,7 +199,7 @@ describe("exchangeMSTeamsCodeForTokens", () => {
 
     // Verify the request was well-formed
     expect(fetchSpy).toHaveBeenCalledOnce();
-    const [url, init] = fetchSpy.mock.calls[0] as [string, RequestInit];
+    const [url, init] = firstFetchCall(fetchSpy);
     expect(url).toBe(buildMSTeamsTokenEndpoint("tenant-1"));
     const body = new URLSearchParams(init.body as string);
     expect(body.get("client_id")).toBe("client-1");
@@ -259,7 +267,7 @@ describe("refreshMSTeamsDelegatedTokens", () => {
     expect(tokens.expiresAt).toBeGreaterThanOrEqual(now + 3300 * 1000 - 1000);
 
     // Verify the request body includes refresh_token grant type
-    const [, init] = fetchSpy.mock.calls[0] as [string, RequestInit];
+    const [, init] = firstFetchCall(fetchSpy);
     const body = new URLSearchParams(init.body as string);
     expect(body.get("grant_type")).toBe("refresh_token");
     expect(body.get("refresh_token")).toBe("original-rt");

extensions/msteams/src/outbound.test.ts

@@ -48,6 +48,23 @@ function requireSendPoll(): MSTeamsSendPoll {
   return sendPoll;
 }
 
+type PollRecord = Record<string, unknown> & { createdAt: string };
+
+function firstPollRecord(): PollRecord {
+  const [call] = mocks.createPoll.mock.calls;
+  if (!call) {
+    throw new Error("expected createPoll call");
+  }
+  const [pollRecord] = call;
+  if (!pollRecord || typeof pollRecord !== "object" || Array.isArray(pollRecord)) {
+    throw new Error("expected createPoll record");
+  }
+  if (typeof (pollRecord as { createdAt?: unknown }).createdAt !== "string") {
+    throw new Error("expected createPoll record timestamp");
+  }
+  return pollRecord as PollRecord;
+}
+
 describe("msteamsOutbound cfg threading", () => {
   beforeEach(() => {
     mocks.sendMessageMSTeams.mockReset();
@@ -138,7 +155,7 @@ describe("msteamsOutbound cfg threading", () => {
       options: ["Pizza", "Sushi"],
       maxSelections: 1,
     });
-    const [pollRecord] = mocks.createPoll.mock.calls[0] ?? [];
+    const pollRecord = firstPollRecord();
     expect(pollRecord).toEqual({
       id: "poll-1",
       question: "Snack?",