# Test unit Mailer test failing Mime-version

**URL:** <https://www.ruby-forum.com/t/test-unit-mailer-test-failing-mime-version/104238>\
**Category:** Rails\
**Created:** [May 15, 2007, 8:31pm UTC](https://www.ruby-forum.com/t/test-unit-mailer-test-failing-mime-version/104238 "2007-05-15T20:31:08Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![kadoudal](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/f0a364/32.png) [@kadoudal](https://www.ruby-forum.com/u/kadoudal)\
**Post date:** [May 15, 2007, 8:31pm UTC](https://www.ruby-forum.com/t/test-unit-mailer-test-failing-mime-version/104238/1 "2007-05-15T20:31:08Z")

</div>

my test is failing because of the string: Mime-Version: 1.0\r\n added  
to the subject

…  
To: removed\_email\_address@domain.invalid\r\n  
Subject: test\r\n  
Content-Type: text/plain; charset=utf-8\r\n\r\n  
…

expected but was

…  
To: removed\_email\_address@domain.invalid\r\n  
Subject: test\r\nMime-Version: 1.0\r\n  
Content-Type: text/plain; charset=utf-8\r\n\r\n  
…

how can I add the mime version in my test ?

thansk

kad