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In the OpenApi3-spec of my API I have an endpoint returning CSV-data. No my Dredd-Test fails although example and returned are exactly the same. I assume the problem that my API returns CSV with a BOM character.

Now I have no idea How I can encode the character correctly in OpenAPI3-YAML. Can anyone help me out?

I tried \ufeff as I would do in JSON but it didn't work.

      responses:
        "200":
          description: ffffoo
          content:
            text/csv;charset=UTF-8:
              schema:
                type: string
              example: |-
                a;b;c
                1;2;3
                4;5;5
Paflow
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1 Answers1

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A literal block scalar does not process escape sequences, you'll need a double-quoted scalar for that:

      responses:
        "200":
          description: ffffoo
          content:
            text/csv;charset=UTF-8:
              schema:
                type: string
              example: "\ufeff\
                a;b;c\n\
                1;2;3\n\
                4;5;5"

An escaped line break excludes the line break from the content. Unescaped line breaks in double-quoted scalars would be folded into an undesired space. \n\ basically replaces the space that would be generated from the line break with a proper line break.

You can of course do away with the line breaks in the source but I'd say this is more readable.

flyx
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  • In the End this dind't help because a strange behavior of Dredd. But it's still the correct answer, so... – Paflow Sep 01 '21 at 15:17