import { normalizeBrowserScreenshot } from "./screenshot.js";

describe("browser screenshot normalization", () => {

const unavailableImageBackend = process.platform === "win32" ? "sips" : "windows-native";

async function withUnavailableImageBackend<T>(fn: () => Promise<T>): Promise<T> {

const previousBackend = process.env.OPENCLAW_IMAGE_BACKEND;

process.env.OPENCLAW_IMAGE_BACKEND = unavailableImageBackend;

try {

return await fn();

} finally {

if (previousBackend === undefined) {

delete process.env.OPENCLAW_IMAGE_BACKEND;

} else {

process.env.OPENCLAW_IMAGE_BACKEND = previousBackend;

}

}

}

it("shrinks oversized images to <=2000x2000 and <=5MB", async () => {

const bigPng = createSolidPngBuffer(2100, 2100, { r: 12, g: 34, b: 56 });

expect(normalized.buffer.equals(jpeg)).toBe(true);

});

it("rejects screenshots above max side when no image processor is available", async () => {

const png = createSolidPngBuffer(420, 120, { r: 12, g: 34, b: 56 });

expect(png.byteLength).toBeLessThan(5 * 1024 * 1024);

await withUnavailableImageBackend(async () => {

await expect(

normalizeBrowserScreenshot(png, {

maxSide: 120,

maxBytes: 5 * 1024 * 1024,

}),

).rejects.toThrow(/image processor unavailable/i);

});

});

});