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Testing Context Menu List Item Component Behavior in OpenHands

This test suite validates the functionality of the ContextMenuListItem component, focusing on rendering, click handling, and disabled state behavior. The tests ensure proper component rendering and event handling while maintaining accessibility standards.

Test Coverage Overview

The test suite provides comprehensive coverage of the ContextMenuListItem component’s core functionality:

Component rendering validation with children elements
Click event handler execution verification
Disabled state behavior testing
User interaction simulation

Implementation Analysis

The testing approach utilizes React Testing Library’s best practices for component testing. It leverages userEvent for simulating user interactions and vitest’s mocking capabilities for tracking function calls. The implementation follows the component isolation pattern, testing each feature independently.

Technical Details

Testing tools and setup:

Vitest for test runner and mocking
React Testing Library for component rendering and queries
userEvent for simulating user interactions
Custom test IDs for reliable element selection

Best Practices Demonstrated

The test suite exemplifies several testing best practices:

Isolation of component testing
Use of meaningful test descriptions
Proper async/await handling
Effective use of mock functions
Accessibility-minded element queries

all-hands-ai/openhands

frontend/__tests__/components/context-menu/context-menu-list-item.test.tsx

            
import { describe, it, expect, vi } from "vitest";
import { render, screen } from "@testing-library/react";
import userEvent from "@testing-library/user-event";
import { ContextMenuListItem } from "#/components/features/context-menu/context-menu-list-item";

describe("ContextMenuListItem", () => {
  it("should render the component with the children", () => {
    render(<ContextMenuListItem onClick={vi.fn}>Test</ContextMenuListItem>);

    expect(screen.getByTestId("context-menu-list-item")).toBeInTheDocument();
    expect(screen.getByText("Test")).toBeInTheDocument();
  });

  it("should call the onClick callback when clicked", async () => {
    const user = userEvent.setup();
    const onClickMock = vi.fn();
    render(
      <ContextMenuListItem onClick={onClickMock}>Test</ContextMenuListItem>,
    );

    const element = screen.getByTestId("context-menu-list-item");
    await user.click(element);

    expect(onClickMock).toHaveBeenCalledOnce();
  });

  it("should not call the onClick callback when clicked and the button is disabled", async () => {
    const user = userEvent.setup();
    const onClickMock = vi.fn();
    render(
      <ContextMenuListItem onClick={onClickMock} isDisabled>
        Test
      </ContextMenuListItem>,
    );

    const element = screen.getByTestId("context-menu-list-item");
    await user.click(element);

    expect(onClickMock).not.toHaveBeenCalled();
  });
});