gradio/ui/packages/app/test/input-output.spec.ts

import { test, expect, Page } from "@playwright/test";

function mock_demo(page: Page, demo: string) {
	return page.route("**/config", (route) => {
		return route.fulfill({
			headers: {
				"Access-Control-Allow-Origin": "*"
			},
			path: `../../../demo/${demo}/config.json`
		});
	});
}

function mock_api(page: Page, body: Array<unknown>) {
	return page.route("**/api/predict/", (route) => {
		const id = JSON.parse(route.request().postData()!).fn_index;
		return route.fulfill({
			headers: {
				"Access-Control-Allow-Origin": "*"
			},
			body: JSON.stringify({
				data: body[id]
			})
		});
	});
}

test("a component acts as both input and output", async ({ page }) => {
	await mock_demo(page, "input-output");
	await mock_api(page, [["world hello"]]);
	await page.goto("http://localhost:3000");

	const textbox = await page.locator("label:has-text('Input-Output')");
	const button = await page.locator("button");

	await textbox.fill("hello world");

	await Promise.all([button.click(), page.waitForResponse("**/api/predict/")]);

	await expect(await page.inputValue("label:has-text('Input-Output')")).toEqual(
		"world hello"
	);
});