userfront e2e 전체 테스트

adminfront/tests/auth.spec.ts

@@ -89,6 +89,26 @@ test.describe("Authentication", () => {
     await expect(page).toHaveURL(/.*\/login.*/, { timeout: 15000 });
   });
 
+  test("should render an actionable SSO button on login route with returnTo", async ({
+    page,
+  }) => {
+    await page.addInitScript(() => {
+      window.localStorage.clear();
+      (
+        window as Window & typeof globalThis & { _IS_TEST_MODE?: boolean }
+      )._IS_TEST_MODE = false;
+    });
+
+    await page.goto("/login?returnTo=%2F");
+
+    const loginButton = page.getByRole("button", {
+      name: /SSO 계정으로 로그인/i,
+    });
+    await expect(loginButton).toBeVisible();
+    await expect(loginButton).toBeEnabled();
+    await expect(loginButton).not.toContainText("로그인 진행 중");
+  });
+
   test("should allow access to dashboard when authenticated", async ({
     page,
   }) => {