deep-diff not working for expectations.clojure.test

[AlexChalk]

I'm getting the

Expected:
  (=
   {:huge "map"}
   result)
Actual:
  (not=
   {:huge "map"}
   {:slightly "different" :huge "map"}
...

style output when I use kaocha with https://github.com/clojure-expectations/expectations.

Versions:

org.clojure/clojure {:mvn/version "1.11.3"}
org.clojure/tools.cli {:mvn/version "1.1.230"}
org.clojure/tools.logging {:mvn/version "1.3.0"}
com.github.seancorfield/expectations {:mvn/version "2.1.201"}
lambdaisland/kaocha {:mvn/version "1.89.1380"}

With regular clojure.test assertions:

Test file:

(ns my.test.ns
  (:require
   [clojure.test :refer [deftest is]]))

(deftest test
  (is (= {:foo "bar"
          :baz "quux"}
         {:foo "bar"
          :baz "quuux"})))

Output:

./bin/kaocha
[(F)]
Randomized with --seed 943555300

FAIL in my.test.ns (ns_test.clj:6)
{:foo "bar", :baz "quuux"}

Expected:
  {:baz "quux", :foo "bar"}
Actual:
  {:baz -"quux" +"quuux", :foo "bar"}
1 tests, 1 assertions, 1 failures.

With clojure-expectations:

Test file:

(ns my.test.ns
  (:require
   [expectations.clojure.test :refer [defexpect expect]]))

(defexpect my-test
  (expect {:foo "bar"
           :baz "quux"}
          {:foo "bar"
           :baz "quuux"}))

Output:

./bin/kaocha
[(F)]
Randomized with --seed 943555300

FAIL in my.test.ns (ns_test.clj:6)
{:foo "bar", :baz "quuux"}

Expected:
  (= {:baz "quux", :foo "bar"} {:baz "quuux", :foo "bar"})
Actual:
  (not= {:baz "quux", :foo "bar"} {:baz "quuux", :foo "bar"})
1 tests, 1 assertions, 1 failures.

I'm opening an issue as the docs suggest clojure-expectations is supported: https://cljdoc.org/d/lambdaisland/kaocha/1.0.861/doc/1-introduction#1-introduction.

Let me know if there's anything I can do to help debug. Thanks!

[plexus]

Kaocha is "compatible" with expectations because expectations is compatible with clojure.test. It seems in this case they deviate from the clojure.test behavior.

I would try running with the debug reporter and comparing the output.

[plexus]

I think it might actually be an easy fix, try adding this to report.clj (see lines 276-280)

(defmethod print-expr 'not= [m]
  (print-expression m))

[AlexChalk]

Thanks for the quick reply. I've taken a look at report.clj and done some println debugging:

Expectations diverges from clojure-test here:

kaocha/src/kaocha/report.clj

Lines 241 to 249 in 0fef3a3

	(defn print-expression [m]
	(let [printer (output/printer)]
	;; :actual is of the form (not (= ...))
	(if (and (not= (:type m) ::one-arg-eql)
	(seq? (second (:actual m)))
	(> (count (second (:actual m))) 2))
	(let [[_ expected & actuals] (-> m :actual second)]

The if passes for clojure-test but not for expectations, which fails to satisfy (seq? (second (:actual m))).

• clojure test outputs (not (=...., so (=... satisfies seq?.
• expectations outputs (not= val, which doesn't.

As a solution, what do you think about adding a new multimethod like this?

(defmulti get-actual
  (fn [m] (first (:actual m))))

;; e.g. (not= ...)
(defmethod get-actual 'not= [m]
  (-> m :actual))

;; e.g. (not (= ...))
(defmethod get-actual :default [m]
  (-> m :actual second))

(defn print-expression [m]
  (let [printer (output/printer)]
    (if (and (not= (:type m) ::one-arg-eql)
             (seq? (get-actual m))
             (> (count (get-actual m)) 2))

      (let [[_ expected & actuals] (get-actual m)]
        (output/print-doc

I'd be happy to contribute this PR—I'll have some time next week. If that sounds good, can you point me to any development docs you have?

[plexus]

Go for it!

[AlexChalk]

This was pretty short so I just submitted the PR. Tests pass locally, but it's failing one that seems unrelated in CI.

[AlexChalk]

Any advice on the failing workflow?