Add LinkTokens service

[MAILPOET-2340]

tests/integration/Subscribers/LinkTokensTest.php

@@ -0,0 +1,54 @@
+<?php
+
+namespace MailPoet\Subscribers;
+
+use MailPoet\Models\Subscriber;
+
+class LinkTokensTest extends \MailPoetTest {
+
+  /** @var LinkTokens */
+  private $link_tokens;
+
+  function _before() {
+    parent::_before();
+    $this->link_tokens = new LinkTokens;
+  }
+
+  function testItGeneratesSubscriberToken() {
+    $subscriber1 = $this->makeSubscriber(['email' => 'demo1@fake.loc']);
+    $subscriber2 = $this->makeSubscriber(['email' => 'demo2@fake.loc']);
+    $token1 = $this->link_tokens->getToken($subscriber1);
+    $token2 = $this->link_tokens->getToken($subscriber2);
+    expect(strlen($token1))->equals(6);
+    expect(strlen($token2))->equals(6);
+    expect($token1 != $token2)->equals(true);
+  }
+
+  function testItGetsSubscriberToken() {
+    $subscriber1 = $this->makeSubscriber(['email' => 'demo1@fake.loc', 'link_token' => 'already-existing-token']);
+    $subscriber2 = $this->makeSubscriber(['email' => 'demo2@fake.loc']);
+    expect($this->link_tokens->getToken($subscriber1))->equals('already-existing-token');
+    expect(strlen($this->link_tokens->getToken($subscriber2)))->equals(6);
+  }
+
+  function testItVerifiesSubscriberToken() {
+    $subscriber = $this->makeSubscriber([
+      'email' => 'demo@fake.loc',
+    ]);
+    $token = $this->link_tokens->getToken($subscriber);
+    expect($this->link_tokens->verifyToken($subscriber, $token))->true();
+    expect($this->link_tokens->verifyToken($subscriber, 'faketoken'))->false();
+  }
+
+  function _after() {
+    \ORM::raw_execute('TRUNCATE ' . Subscriber::$_table);
+  }
+
+  private function makeSubscriber($data) {
+    $subscriber = Subscriber::create();
+    $subscriber->hydrate($data);
+    $subscriber->save();
+    return $subscriber;
+  }
+
+}