},

}));

function firstMockCall(

mock: { mock: { calls: Array<readonly unknown[]> } },

label: string,

): readonly unknown[] {

const call = mock.mock.calls[0];

if (!call) {

throw new Error(`expected ${label} call`);

}

return call;

}

afterAll(() => {

vi.doUnmock("playwright-core");

vi.resetModules();

expect(launchMock).toHaveBeenCalledTimes(1);

expect(pages).toHaveLength(1);

expect(pages[0]?.pdf).toHaveBeenCalledTimes(1);

const pdfCall = pages[0]?.pdf.mock.calls.at(0)?.[0] as Record<string, unknown> | undefined;

const pdfCall = firstMockCall(pages[0]?.pdf, "PDF render")[0] as

| Record<string, unknown>

| undefined;

if (!pdfCall) {

throw new Error("expected PDF render call");

}

registerDiffsPlugin(api as unknown as OpenClawPluginApi);

expect(on).toHaveBeenCalledTimes(1);

expect(on.mock.calls.at(0)?.[0]).toBe("before_prompt_build");

const beforePromptBuild = on.mock.calls.at(0)?.[1];

const promptResult = await beforePromptBuild?.({}, {});

const [hookName, beforePromptBuild] = firstMockCall(on, "plugin hook registration");

expect(hookName).toBe("before_prompt_build");

if (typeof beforePromptBuild !== "function") {

throw new Error("expected before_prompt_build callback");

}

const promptResult = await beforePromptBuild({}, {});

expect(promptResult?.prependSystemContext).toBe(

[

"When you need to show edits as a real diff, prefer the `diffs` tool instead of writing a manual summary.",