Q196: a connector sign-in always ends connected, failed or timed out, and says which

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/unit/connector-sign-in.test.ts

@@ -0,0 +1,16 @@
+import { describe, expect, test } from "vitest";
+import { judgeSignIn } from "../../src/renderer/src/pages/connectors/sign-in";
+
+describe("connector sign-in", () => {
+  test("ends connected or failed only on what the new account says; anything else keeps waiting", () => {
+    const row = (id: string, status: string, pendingAccountId: string | null = null) => ({ id, status, pendingAccountId });
+    expect(judgeSignIn(row("ca_new", "ACTIVE"), "ca_new")).toEqual({ outcome: "connected" });
+    expect(judgeSignIn(row("ca_new", "FAILED"), "ca_new")).toEqual({ outcome: "failed", message: "The account is failed." });
+    expect(judgeSignIn(row("ca_new", "EXPIRED"), "ca_new")).toEqual({ outcome: "failed", message: "The account is expired." });
+    expect(judgeSignIn(row("ca_new", "INITIATED"), "ca_new")).toEqual({ outcome: "waiting" });
+    expect(judgeSignIn(undefined, "ca_new")).toEqual({ outcome: "waiting" });
+    // A reconnect waits while the new account is pending, and fails if it never takes over from the old one.
+    expect(judgeSignIn(row("ca_old", "ACTIVE", "ca_new"), "ca_new")).toEqual({ outcome: "waiting" });
+    expect(judgeSignIn(row("ca_old", "ACTIVE"), "ca_new")).toEqual({ outcome: "failed", message: "The new sign-in did not complete; the earlier connection is kept." });
+  });
+});