Question around verification on the ValidationError

[Yang Yang]

Hi all,

I am writing some integration type test for all validation. For happy pass case, it's easy just assert the data is exactly the same. But for the negative case, since I am interested in the validation result/information, I am using this function validation-error-explain https://github.com/plumatic/schema/blob/master/src/cljx/schema/utils.cljx#L91 in my test to get a list and verify the information is what I expected.

(validation-error-explain (first (keys (:error (#'sut/is-valid-root-elements? (merge MIN_VALID_DATA {:exteral-key "bla"}))))))
;; => (not ("Resource must starts with /" :exteral-key))

Is this the correct way to verify the validation result? is there a better way? Thanks.

[Jason Wolfe]

The ValidationError will not necessarily be at the top level.  The easiest thing would be to just call e.g. `pr-str` on the error (or at least, that's what we do in the schema tests). 

https://github.com/plumatic/schema/blob/master/test/clj/schema/test_macros.clj#L20

https://github.com/plumatic/schema/blob/master/test/cljx/schema/core_test.cljx

-Jason

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