Back to Repositories

Validating UI Component Rendering and Event Handling in gradio-app

This test suite validates rendering functionality and event handling in the Gradio application, focusing on interactive UI components and real-time updates. The tests cover button interactions, event listeners, and dynamic rendering behaviors.

Test Coverage Overview

The test suite provides comprehensive coverage of rendering and event handling mechanisms.

Key areas tested include:

Button click event listeners and state updates
Time-based rendering with ‘every=’ functionality
Event and selection data processing
Example functionality validation
Dynamic UI updates and value propagation

Implementation Analysis

The testing approach utilizes Playwright’s page object model for UI interaction simulation. Tests employ async/await patterns for handling asynchronous operations and leverage built-in assertions for validating component states and values.

Key implementation features:

Page object selectors for element targeting
Timeout handling for time-sensitive tests
Value comparison and state validation
Click event simulation and response verification

Technical Details

Testing stack components:

Playwright for browser automation
Custom test utilities from @self/tootils
Expect assertions for validation
Page object model for element interaction
Async/await for handling asynchronous operations

Best Practices Demonstrated

The test suite exhibits strong testing practices through organized, focused test cases that validate specific functionality independently.

Notable practices include:

Descriptive test names indicating purpose
Isolated test scenarios
Proper async/await usage
Consistent element selection strategies
Clear assertions with specific expectations

gradio-app/gradio

js/spa/test/render_tests.spec.ts

            
import { test, expect } from "@self/tootils";

test("Test button.click listener works in render", async ({ page }) => {
	const slider = page.getByLabel("number input for Box Count");
	await slider.fill("6");
	await page.getByRole("button", { name: "Create Boxes" }).click();
	await expect(page.getByLabel("Count 4")).toHaveValue("3");
});

test("Test every= works in render", async ({ page }) => {
	const timebox = page.getByLabel("Time");
	const box_1 = page.getByLabel("Render 1");
	const slider = page.getByLabel("number input for Slider");
	let timebox_value_start = parseFloat(await timebox.inputValue());
	let box_1_value_start = parseFloat(await box_1.inputValue());

	await page.waitForTimeout(500);
	let timebox_value_end = parseFloat(await timebox.inputValue());
	expect(timebox_value_end).toBeGreaterThan(timebox_value_start);

	await page.waitForTimeout(500);
	await slider.fill("4");
	const box_2 = page.getByLabel("Render 2");
	let box_2_value_start = parseFloat(await box_2.inputValue());
	expect(box_2_value_start).toBeGreaterThan(box_1_value_start);

	await page.waitForTimeout(500);
	let box_2_value_end = parseFloat(await box_2.inputValue());
	expect(box_2_value_end).toBeGreaterThan(box_2_value_start);
});

test("Test event/selection data works in render", async ({ page }) => {
	const selected_button = page.getByLabel("Selected Button");
	const slider = page.getByLabel("number input for Slider");
	await slider.fill("3");
	await page.getByRole("button", { name: "Button 2" }).click();

	await expect(selected_button).toHaveValue("Button 2");

	const selected_chat = page.getByLabel("Selected Chat");
	await page.getByText("Hi").click();
	await expect(selected_chat).toHaveValue("[0, 1]");
});

test("Test event/selection data can trigger render", async ({ page }) => {
	await page.getByText("chat3").click();
	const selected_chat = page.getByLabel("Trigger Index");
	await expect(selected_chat).toHaveValue("[1, 0]");
});

test("Test examples work in render", async ({ page }) => {
	await page.getByRole("button", { name: "test" }).click();
	await expect(page.getByLabel("input", { exact: true })).toHaveValue("test");
	await page.getByRole("button", { name: "def", exact: true }).click();
	await expect(page.getByLabel("little textbox", { exact: true })).toHaveValue(
		"def"
	);
});