update

test/helpers/smtp.client.ts

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+import { SmtpClient } from '../../ts/mail/delivery/classes.smtp.client.js';
+import type { ISmtpClientOptions } from '../../ts/mail/delivery/smtpclient/interfaces.js';
+
+/**
+ * Create a test SMTP client
+ */
+export function createTestSmtpClient(options: Partial<ISmtpClientOptions> = {}): SmtpClient {
+  const defaultOptions: ISmtpClientOptions = {
+    host: options.host || 'localhost',
+    port: options.port || 2525,
+    secure: options.secure || false,
+    auth: options.auth,
+    ignoreTLS: options.ignoreTLS || true,
+    requireTLS: options.requireTLS || false,
+    connectionTimeout: options.connectionTimeout || 5000,
+    socketTimeout: options.socketTimeout || 5000,
+    greetingTimeout: options.greetingTimeout || 5000,
+    maxConnections: options.maxConnections || 5,
+    maxMessages: options.maxMessages || 100,
+    rateDelta: options.rateDelta || 1000,
+    rateLimit: options.rateLimit || 5,
+    logger: options.logger || false,
+    debug: options.debug || false,
+    authMethod: options.authMethod || 'PLAIN',
+    tls: options.tls || {
+      rejectUnauthorized: false
+    }
+  };
+  
+  return new SmtpClient(defaultOptions);
+}
+
+/**
+ * Send test email using SMTP client
+ */
+export async function sendTestEmail(
+  client: SmtpClient,
+  options: {
+    from?: string;
+    to?: string | string[];
+    subject?: string;
+    text?: string;
+    html?: string;
+  } = {}
+): Promise<any> {
+  const mailOptions = {
+    from: options.from || 'test@example.com',
+    to: options.to || 'recipient@example.com',
+    subject: options.subject || 'Test Email',
+    text: options.text || 'This is a test email',
+    html: options.html
+  };
+  
+  return client.sendMail(mailOptions);
+}
+
+/**
+ * Test SMTP client connection
+ */
+export async function testClientConnection(
+  host: string,
+  port: number,
+  timeout: number = 5000
+): Promise<boolean> {
+  const client = createTestSmtpClient({
+    host,
+    port,
+    connectionTimeout: timeout
+  });
+  
+  try {
+    const result = await client.verify();
+    return result;
+  } catch (error) {
+    throw error;
+  } finally {
+    if (client.close) {
+      await client.close();
+    }
+  }
+}
+
+/**
+ * Create authenticated SMTP client
+ */
+export function createAuthenticatedClient(
+  host: string,
+  port: number,
+  username: string,
+  password: string,
+  authMethod: 'PLAIN' | 'LOGIN' = 'PLAIN'
+): SmtpClient {
+  return createTestSmtpClient({
+    host,
+    port,
+    auth: {
+      user: username,
+      pass: password
+    },
+    authMethod,
+    secure: false,
+    ignoreTLS: true
+  });
+}
+
+/**
+ * Create TLS-enabled SMTP client
+ */
+export function createTlsClient(
+  host: string,
+  port: number,
+  options: {
+    secure?: boolean;
+    requireTLS?: boolean;
+    rejectUnauthorized?: boolean;
+  } = {}
+): SmtpClient {
+  return createTestSmtpClient({
+    host,
+    port,
+    secure: options.secure || false,
+    requireTLS: options.requireTLS || false,
+    ignoreTLS: false,
+    tls: {
+      rejectUnauthorized: options.rejectUnauthorized || false
+    }
+  });
+}
+
+/**
+ * Test client pool status
+ */
+export async function testClientPoolStatus(client: SmtpClient): Promise<any> {
+  if (typeof client.getPoolStatus === 'function') {
+    return client.getPoolStatus();
+  }
+  
+  // Fallback for clients without pool status
+  return {
+    size: 1,
+    available: 1,
+    pending: 0,
+    connecting: 0,
+    active: 0
+  };
+}
+
+/**
+ * Send multiple emails concurrently
+ */
+export async function sendConcurrentEmails(
+  client: SmtpClient,
+  count: number,
+  emailOptions: {
+    from?: string;
+    to?: string;
+    subject?: string;
+    text?: string;
+  } = {}
+): Promise<any[]> {
+  const promises = [];
+  
+  for (let i = 0; i < count; i++) {
+    promises.push(
+      sendTestEmail(client, {
+        ...emailOptions,
+        subject: `${emailOptions.subject || 'Test Email'} ${i + 1}`
+      })
+    );
+  }
+  
+  return Promise.all(promises);
+}
+
+/**
+ * Measure client throughput
+ */
+export async function measureClientThroughput(
+  client: SmtpClient,
+  duration: number = 10000,
+  emailOptions: {
+    from?: string;
+    to?: string;
+    subject?: string;
+    text?: string;
+  } = {}
+): Promise<{ totalSent: number; successCount: number; errorCount: number; throughput: number }> {
+  const startTime = Date.now();
+  let totalSent = 0;
+  let successCount = 0;
+  let errorCount = 0;
+  
+  while (Date.now() - startTime < duration) {
+    try {
+      await sendTestEmail(client, emailOptions);
+      successCount++;
+    } catch (error) {
+      errorCount++;
+    }
+    totalSent++;
+  }
+  
+  const actualDuration = (Date.now() - startTime) / 1000; // in seconds
+  const throughput = totalSent / actualDuration;
+  
+  return {
+    totalSent,
+    successCount,
+    errorCount,
+    throughput
+  };
+}