From 55ba7b8f22cacfdafdd292ddcf3b9679da181c1e Mon Sep 17 00:00:00 2001
From: johan Vlaar <johan@adivare.nl>
Date: Mon, 12 Jun 2023 11:20:03 +0200
Subject: [PATCH] [Mailer] Add EmailSubjectContains constraint (#49939)

Adds assertEmailSubjectContains and assertEmailSubjectNotContains
---
 .../Test/MailerAssertionsTrait.php            | 10 ++++
 .../Tests/Functional/MailerTest.php           |  2 +
 .../Test/Constraint/EmailSubjectContains.php  | 47 +++++++++++++++++++
 3 files changed, 59 insertions(+)
 create mode 100644 src/Symfony/Component/Mime/Test/Constraint/EmailSubjectContains.php

diff --git a/src/Symfony/Bundle/FrameworkBundle/Test/MailerAssertionsTrait.php b/src/Symfony/Bundle/FrameworkBundle/Test/MailerAssertionsTrait.php
index d6b29d2b5a0c6..83643421ef880 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Test/MailerAssertionsTrait.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Test/MailerAssertionsTrait.php
@@ -90,6 +90,16 @@ public static function assertEmailAddressContains(RawMessage $email, string $hea
         self::assertThat($email, new MimeConstraint\EmailAddressContains($headerName, $expectedValue), $message);
     }
 
+    public static function assertEmailSubjectContains(RawMessage $email, string $expectedValue, string $message = ''): void
+    {
+        self::assertThat($email, new MimeConstraint\EmailSubjectContains($expectedValue), $message);
+    }
+
+    public static function assertEmailSubjectNotContains(RawMessage $email, string $expectedValue, string $message = ''): void
+    {
+        self::assertThat($email, new LogicalNot(new MimeConstraint\EmailSubjectContains($expectedValue)), $message);
+    }
+
     /**
      * @return MessageEvent[]
      */
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/MailerTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/MailerTest.php
index 942dd05178b24..0ca437c1e8d9c 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/MailerTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/MailerTest.php
@@ -104,6 +104,8 @@ public function testMailerAssertions()
         $this->assertEmailAttachmentCount($email, 1);
 
         $email = $this->getMailerMessage($second);
+        $this->assertEmailSubjectContains($email, 'Foo');
+        $this->assertEmailSubjectNotContains($email, 'Bar');
         $this->assertEmailAddressContains($email, 'To', 'fabien@symfony.com');
         $this->assertEmailAddressContains($email, 'To', 'thomas@symfony.com');
         $this->assertEmailAddressContains($email, 'Reply-To', 'me@symfony.com');
diff --git a/src/Symfony/Component/Mime/Test/Constraint/EmailSubjectContains.php b/src/Symfony/Component/Mime/Test/Constraint/EmailSubjectContains.php
new file mode 100644
index 0000000000000..64be30cd2f319
--- /dev/null
+++ b/src/Symfony/Component/Mime/Test/Constraint/EmailSubjectContains.php
@@ -0,0 +1,47 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Mime\Test\Constraint;
+
+use PHPUnit\Framework\Constraint\Constraint;
+use Symfony\Component\Mime\Email;
+
+final class EmailSubjectContains extends Constraint
+{
+    public function __construct(
+        private readonly string $expectedSubjectValue,
+    ) {
+    }
+
+    public function toString(): string
+    {
+        return sprintf('contains subject with value "%s"', $this->expectedSubjectValue);
+    }
+
+    protected function matches($other): bool
+    {
+        if (!$other instanceof Email) {
+            throw new \LogicException('Can only test a message subject on a Email instance.');
+        }
+
+        return str_contains((string) $other->getSubject(), $this->expectedSubjectValue);
+    }
+
+    protected function failureDescription($other): string
+    {
+        $message = 'The email subject '.$this->toString();
+        if ($other instanceof Email) {
+            $message .= sprintf('. The subject was: "%s"', $other->getSubject() ?? '<empty>');
+        }
+
+        return $message;
+    }
+}

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