Move Mailer error tests to unit [MAILPOET-2009]

tests/unit/Mailer/MailerErrorTest.php

@@ -0,0 +1,54 @@
+<?php
+namespace MailPoet\Test\Mailer;
+
+use Codeception\Stub;
+use MailPoet\Mailer\MailerError;
+use MailPoet\Mailer\SubscriberError;
+use MailPoet\WP\Functions as WPFunctions;
+
+class MailerErrorTest extends \MailPoetUnitTest {
+
+  function _before() {
+    WPFunctions::set(Stub::make(new WPFunctions, [
+      '__' => function ($value) {
+        return $value;
+      }
+    ]));
+  }
+
+  function testItCanComposeErrorMessageWithoutSubscribers() {
+    $error = new MailerError(MailerError::OPERATION_SEND, MailerError::LEVEL_HARD, 'Some Message');
+    expect($error->getMessageWithFailedSubscribers())->equals('Some Message');
+  }
+
+  function testItCanComposeErrorMessageWithOneSubscriber() {
+    $subscriber_error = new SubscriberError('email@example.com', 'Subscriber message');
+    $error = new MailerError(
+      MailerError::OPERATION_SEND,
+      MailerError::LEVEL_HARD,
+      'Some Message',
+      null,
+      [$subscriber_error]
+    );
+    expect($error->getMessageWithFailedSubscribers())->equals('Some Message Unprocessed subscriber: (email@example.com: Subscriber message)');
+  }
+
+  function testItCanComposeErrorMessageWithMultipleSubscriberErrors() {
+    $subscriber_error_1 = new SubscriberError('email1@example.com', 'Subscriber 1 message');
+    $subscriber_error_2 = new SubscriberError('email2@example.com', null);
+    $error = new MailerError(
+      MailerError::OPERATION_SEND,
+      MailerError::LEVEL_HARD,
+      'Some Message',
+      null,
+      [$subscriber_error_1, $subscriber_error_2]
+    );
+    expect($error->getMessageWithFailedSubscribers())->equals(
+      'Some Message Unprocessed subscribers: (email1@example.com: Subscriber 1 message), (email2@example.com)'
+    );
+  }
+
+  function _after() {
+    WPFunctions::set(new WPFunctions);
+  }
+}