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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Tests errors related to 'MarkDecorator'","articleBody":"### Bug report\r\n\r\n**Bug summary**\r\n\r\nDuring ArchLinux packaging builds, we have a bunch of errors related to 'MarkDecorator'.\r\n\r\nThree different errors:\r\n```\r\nE TypeError: object of type 'MarkDecorator' has no len()\r\nE AttributeError: 'MarkDecorator' object has no attribute 'encode'\r\nE TypeError: cannot concatenate 'str' and 'MarkDecorator' objects\r\n```\r\nthat lead to think it is supposed to be a string but actually is not.\r\n\r\nFull log (minus irrelevant `ImageComparisonFailure: images not close` due to fonts/freetype2 differences) available here: https://paste.xinu.at/KRdO/\r\n\r\nLikely yet another pytest issue?\r\n\r\n**Matplotlib version**\r\n  * Operating system: ArchLinux\r\n  * Matplotlib version: 2.2.3 + https://github.com/matplotlib/matplotlib/pull/13181 + https://github.com/matplotlib/matplotlib/commit/62297d167c2b7ac8305ba6a60ec0191c6e7a09af\r\n  * Python version: 2.7.15","author":{"url":"https://github.com/ArchangeGabriel","@type":"Person","name":"ArchangeGabriel"},"datePublished":"2019-01-14T14:55:39.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":4},"url":"https://github.com/13182/matplotlib/issues/13182"}