Use Cookies service within Session and add unit test

[MAILPOET-2248]

tests/unit/Config/SessionTest.php

@@ -0,0 +1,79 @@
+<?php
+namespace MailPoet\Config;
+
+use MailPoet\Util\Cookies;
+use PHPUnit_Framework_MockObject_MockObject as MockObject;
+
+class SessionTest extends \MailPoetUnitTest {
+
+  /** @var Session */
+  private $session;
+
+  /** @var MockObject */
+  private $cookies_mock;
+
+  function _before() {
+    parent::_before();
+    unset($_COOKIE[Session::COOKIE_NAME]);
+    $this->cookies_mock = $this->createMock(Cookies::class);
+    $this->session = new Session($this->cookies_mock);
+  }
+
+  function testItInitializesNewSessionCorrectly() {
+    $this->cookies_mock
+      ->expects($this->once())
+      ->method('get')
+      ->willReturn(null);
+    $this->cookies_mock
+      ->expects($this->once())
+      ->method('set')
+      ->with(
+        $this->equalTo(Session::COOKIE_NAME),
+        $this->isType('string'),
+        $this->callback(function ($options) {
+          if (!isset($options['expires']) || $options['expires'] < time()) {
+            return false;
+          }
+          if ($options['path'] !== '/') {
+            return false;
+          }
+          return true;
+        })
+      );
+    $this->session->init();
+  }
+
+  function testItPrologsCurrentSessionDuringInitialization() {
+    $session_id = 'abcd';
+    $this->cookies_mock
+      ->expects($this->once())
+      ->method('get')
+      ->willReturn($session_id);
+    $this->cookies_mock
+      ->expects($this->once())
+      ->method('set')
+      ->with(
+        $this->equalTo(Session::COOKIE_NAME),
+        $this->equalTo($session_id),
+        $this->callback(function ($options) {
+          if (!isset($options['expires']) || $options['expires'] < time()) {
+            return false;
+          }
+          if ($options['path'] !== '/') {
+            return false;
+          }
+          return true;
+        })
+      );
+    $this->session->init();
+  }
+
+  function testItReturnsSessionIdCorrectly() {
+    $session_id = 'abcd';
+    $this->cookies_mock
+      ->expects($this->once())
+      ->method('get')
+      ->willReturn($session_id);
+    expect($this->session->getid())->equals($session_id);
+  }
+}