hspec-expectations with pretty printing on failure https://github.com/hspec/hspec-expectations#readme

Latest on Hackage:0.1

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MIT licensed by Daggerboard Inc, makers of docmunch.com
Maintained by Greg Weber

Use exactly the same as hspec-expectations. Require a PrettyTerm instance for anything under expectation. To start with you can define a Pretty instance and then just write: instance PrettyTerm YourData using wl-pprint-extras and wl-pprint-terminfo.

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