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[Mailer] Add assertEmailAddressNotContains #60740

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@santysisi santysisi commented Jun 7, 2025

Q A
Branch? 7.4
Bug fix? no
New feature? yes
Deprecations? no
Issues No
License MIT

This PR introduces a new assertion method assertEmailAddressNotContains() to the MailerAssertionsTrait.

The new method complements the existing assertEmailAddressContains() by allowing developers to assert that a specific email address does not appear in a given header. This addition brings the assertEmailAddressContains in line with other similar assertion pairs already available in the trait, such as:

  • assertEmailTextBodyContains / assertEmailTextBodyNotContains
  • assertEmailHtmlBodyContains / assertEmailHtmlBodyNotContains
  • assertEmailSubjectContains / assertEmailSubjectNotContains

Example usage

$this->assertEmailAddressNotContains($email, 'To', 'test@test.com');

@@ -1,6 +1,10 @@
CHANGELOG
=========

7.4
---
* added `assertEmailAddressNotContains()` to `MailerAssertionsTrait`.
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Suggested change
* added `assertEmailAddressNotContains()` to `MailerAssertionsTrait`.
* Add `assertEmailAddressNotContains()` to the `MailerAssertionsTrait`

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I agree with your suggestion, and I've made that change.
Thanks a lot for your help!

Comment on lines 109 to 111
$this->assertEmailAddressNotContains($email, 'To', 'fabien@fake.symfony.com');
$this->assertEmailAddressNotContains($email, 'To', 'thomas@fake.symfony.com');
$this->assertEmailAddressNotContains($email, 'Reply-To', 'me@fake.symfony.com');
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It seems that these assertions are redundant, given that the addresses specified have never been used before.

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I don’t think the assertions are an issue, but I’m happy to update the emails if you have any suggestions for alternatives.
Thanks again! 😄❤️

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I've updated the emails to helene@symfony.com. I believe this still tests the same behavior, but this format is more in line with the emails currently used in Symfony tests 😊

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A test that cannot fail is not useful. I think you should to add assertions that would actually fail if something breaks.

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I'd like to clarify a couple of points:

  1. The method is simply applying a LogicalNot to an existing Constraint that is already implemented and tested.
  2. If you look at several of the current assertions in the same test file, you'll notice that they cover similar cases to the ones I'm adding now. In fact, the same email is already being tested, just in a different way.

As always, if you have any suggestions, they're more than welcome! 😄

@@ -1,6 +1,10 @@
CHANGELOG
=========

7.4
---
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Suggested change
---
---

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Thanks again! The change has been made.
Apologies for the many mistakes in the CHANGELOG.md, totally my fault 😄

@santysisi santysisi force-pushed the feature/add-assertEmailAddressNotContains branch from b64a567 to 559d45b Compare June 8, 2025 05:01
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