Server Integration

/**
 * Creates a browser server instance for running tests
 * @param project - Vitest test project instance
 * @param configFile - Optional path to Vite config file
 * @param prePlugins - Plugins to add before default plugins
 * @param postPlugins - Plugins to add after default plugins
 * @returns Promise resolving to ParentBrowserProject instance
 */
function createBrowserServer(
  project: TestProject,
  configFile: string | undefined,
  prePlugins?: Plugin[],
  postPlugins?: Plugin[]
): Promise<ParentBrowserProject>;

import { createBrowserServer } from "@vitest/browser";
import type { TestProject, Plugin } from "vitest/node";

// Basic browser server creation
async function setupBrowserTests(project: TestProject) {
  const browserServer = await createBrowserServer(
    project,
    undefined // Use default config
  );
  
  return browserServer;
}

// With custom plugins
const customPlugin: Plugin = {
  name: 'custom-plugin',
  configureServer(server) {
    // Custom server configuration
  }
};

const browserServer = await createBrowserServer(
  project,
  './vitest.config.ts',
  [customPlugin], // Pre-plugins
  [] // Post-plugins
);

/**
 * Creates a browser test pool for managing multiple browser instances
 * @param vitest - Vitest instance for test execution
 * @returns ProcessPool instance for parallel test execution
 */
function createBrowserPool(vitest: Vitest): ProcessPool;

import { createBrowserPool } from "@vitest/browser";
import type { Vitest } from "vitest/node";

// Create browser pool for parallel testing
function setupBrowserPool(vitest: Vitest) {
  const browserPool = createBrowserPool(vitest);
  return browserPool;
}

// Pool is typically managed internally by Vitest
// but can be used for custom test orchestration

/**
 * Browser project interface for configuration and test management
 */
interface ProjectBrowser {
  // Project browser implementation details
  // (specific properties depend on internal implementation)
}

/**
 * Path to the distribution directory of @vitest/browser package
 */
const distRoot: string;

import { distRoot } from "@vitest/browser";
import { join } from "path";

// Access client-side assets
const clientScriptPath = join(distRoot, "client.js");
const locatorScriptPath = join(distRoot, "locators", "index.js");

// Useful for custom plugin development
function customBrowserPlugin() {
  return {
    name: 'custom-browser-plugin',
    configureServer(server) {
      // Serve additional browser assets
      server.middlewares.use('/browser-assets', express.static(distRoot));
    }
  };
}

import { createBrowserServer } from "@vitest/browser";
import type { Plugin } from "vite";

// Custom plugin for browser tests
const browserTestPlugin: Plugin = {
  name: 'browser-test-plugin',
  configureServer(server) {
    // Add custom middleware
    server.middlewares.use('/api', (req, res, next) => {
      // Handle test API requests
      if (req.url?.startsWith('/api/test-data')) {
        res.setHeader('Content-Type', 'application/json');
        res.end(JSON.stringify({ data: 'test' }));
      } else {
        next();
      }
    });
  },
  buildStart() {
    // Setup test environment
    console.log('Browser test environment starting...');
  }
};

// Use plugin with browser server
const browserServer = await createBrowserServer(
  project,
  configFile,
  [browserTestPlugin]
);

// vitest.config.ts - Server-side configuration
export default defineConfig({
  test: {
    browser: {
      enabled: true,
      provider: 'playwright',
      name: 'chromium',
      // Server-side options
      providerOptions: {
        launch: {
          headless: process.env.CI === 'true',
          devtools: !process.env.CI
        }
      }
    }
  },
  server: {
    // Vite server options for browser tests
    port: 3000,
    host: true,
    fs: {
      // Allow serving files from test fixtures
      allow: ['..']
    }
  }
});

import { createBrowserServer } from "@vitest/browser";
import type { TestProject } from "vitest/node";

class CustomTestRunner {
  private browserServer?: ParentBrowserProject;

  async setup(project: TestProject) {
    // Create browser server with project configuration
    this.browserServer = await createBrowserServer(project, project.config.configFile);
    
    // Server is now ready for browser tests
    console.log(`Browser server ready on port ${this.browserServer.port}`);
  }

  async runTests() {
    if (!this.browserServer) {
      throw new Error('Browser server not initialized');
    }
    
    // Run tests using the browser server
    // (typically handled by Vitest internally)
  }

  async cleanup() {
    if (this.browserServer) {
      await this.browserServer.close();
    }
  }
}

import { createBrowserServer } from "@vitest/browser";

try {
  const browserServer = await createBrowserServer(project, configFile);
} catch (error) {
  if (error.message.includes('version mismatch')) {
    console.error('Vitest and @vitest/browser versions do not match');
    // Handle version compatibility issues
  } else if (error.message.includes('port already in use')) {
    console.error('Server port is already in use');
    // Handle port conflicts
  } else {
    console.error('Failed to create browser server:', error);
    // Handle other server creation errors
  }
}

// Custom environment that uses browser server
export default class BrowserTestEnvironment implements Environment {
  private browserServer?: ParentBrowserProject;

  async setup(project: TestProject) {
    this.browserServer = await createBrowserServer(project);
    // Environment is ready
  }
}

// Vitest plugin that enhances browser testing
function vitestBrowserPlugin(): Plugin {
  return {
    name: 'vitest-browser-plugin',
    config(config) {
      // Modify browser test configuration
      if (config.test?.browser?.enabled) {
        // Add browser-specific settings
      }
    }
  };
}

interface ParentBrowserProject {
  // Internal browser project implementation
  // Handles browser test orchestration and lifecycle
}

interface BrowserPool {
  // Internal browser pool implementation  
  // Manages multiple browser instances for parallel testing
}