test: add intent acceptance integration test

src/app/solve/accept-intent.integration.test.tsx

@@ -0,0 +1,77 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+import { render, screen, waitFor } from "@testing-library/react";
+import userEvent from "@testing-library/user-event";
+import type { OpenIntent } from "@/lib/types";
+
+const { fetcherMock, acceptIntentMock } = vi.hoisted(() => ({
+  fetcherMock: vi.fn(),
+  acceptIntentMock: vi.fn(),
+}));
+vi.mock("@/lib/api", () => ({
+  fetcher: fetcherMock,
+  acceptIntent: acceptIntentMock,
+}));
+
+import { useWalletStore } from "@/store/wallet";
+import { ToastViewport } from "@/components/ToastViewport";
+import SolvePage from "./page";
+
+const openIntent: OpenIntent = {
+  id: "a1b2",
+  srcChain: "ethereum",
+  srcToken: "USDC",
+  srcAmount: "500",
+  dstToken: "USDC",
+  minOut: "495",
+  deadline: new Date(Date.now() + 18 * 60_000).toISOString(),
+};
+
+const initialWalletState = useWalletStore.getState();
+
+function renderSolvePage() {
+  return render(
+    <>
+      <SolvePage />
+      <ToastViewport />
+    </>
+  );
+}
+
+describe("solve page accept-intent flow (integration)", () => {
+  beforeEach(() => {
+    useWalletStore.setState({ ...initialWalletState, isConnected: true, address: "GABC123" }, true);
+  });
+
+  afterEach(() => {
+    useWalletStore.setState(initialWalletState, true);
+    vi.clearAllMocks();
+  });
+
+  it("lists an open intent, accepts it, shows a success toast, and removes it from the feed", async () => {
+    fetcherMock.mockImplementation(async (path: string) => {
+      if (path === "/solvers") return [];
+      if (path === "/intents/open") {
+        return acceptIntentMock.mock.calls.length > 0 ? [] : [openIntent];
+      }
+      throw new Error(`Unexpected fetch: ${path}`);
+    });
+    acceptIntentMock.mockResolvedValue({ intentId: "a1b2", status: "accepted" });
+
+    const user = userEvent.setup();
+    renderSolvePage();
+
+    await user.click(screen.getByRole("tab", { name: "intents" }));
+    await waitFor(() => expect(screen.getByText("500 USDC on ethereum")).toBeInTheDocument());
+
+    await user.click(screen.getByText("Accept Intent →"));
+
+    await waitFor(() => {
+      expect(screen.getByText("Intent accepted — you have exclusive fill rights.")).toBeInTheDocument();
+    });
+    expect(acceptIntentMock).toHaveBeenCalledWith("a1b2", "GABC123");
+
+    await waitFor(() => {
+      expect(screen.getByText(/No open intents right now/)).toBeInTheDocument();
+    });
+  });
+});