test: add unit test for backend wallet

Author: ElasticBottle

packages/thirdweb/src/wallets/in-app/core/authentication/backend.test.ts

@@ -0,0 +1,69 @@
+import { describe, expect, it, vi } from "vitest";
+import { TEST_CLIENT } from "~test/test-clients.js";
+import { getClientFetch } from "../../../../utils/fetch.js";
+import { stringify } from "../../../../utils/json.js";
+import { backendAuthenticate } from "./backend.js";
+import { getLoginUrl } from "./getLoginPath.js";
+
+// Mock dependencies
+vi.mock("../../../../utils/fetch.js");
+vi.mock("./getLoginPath.js");
+
+describe("backendAuthenticate", () => {
+  it("should successfully authenticate and return token", async () => {
+    // Mock response data
+    const mockResponse = {
+      token: "mock-token",
+      cookieString: "mock-cookie",
+    };
+
+    // Mock fetch implementation
+    const mockFetch = vi.fn().mockResolvedValue({
+      ok: true,
+      json: () => Promise.resolve(mockResponse),
+    });
+
+    // Mock dependencies
+    vi.mocked(getClientFetch).mockReturnValue(mockFetch);
+    vi.mocked(getLoginUrl).mockReturnValue("/auth/login");
+
+    const result = await backendAuthenticate({
+      client: TEST_CLIENT,
+      walletSecret: "test-secret",
+    });
+
+    // Verify the fetch call
+    expect(mockFetch).toHaveBeenCalledWith("/auth/login", {
+      method: "POST",
+      headers: {
+        "Content-Type": "application/json",
+      },
+      body: stringify({ walletSecret: "test-secret" }),
+    });
+
+    // Verify response
+    expect(result).toEqual(mockResponse);
+  });
+
+  it("should throw error when authentication fails", async () => {
+    // Mock failed fetch response
+    const mockFetch = vi.fn().mockResolvedValue({
+      ok: false,
+    });
+
+    // Mock dependencies
+    vi.mocked(getClientFetch).mockReturnValue(mockFetch);
+    vi.mocked(getLoginUrl).mockReturnValue("/auth/login");
+
+    // Test inputs
+    const args = {
+      client: TEST_CLIENT,
+      walletSecret: "test-secret",
+    };
+
+    // Verify error is thrown
+    await expect(backendAuthenticate(args)).rejects.toThrow(
+      "Failed to generate backend account",
+    );
+  });
+});