matcho 
Idea
The main goal is to provide the simpliest DSL to describe pattern of expected value.
Problem
Not so easy to write tests with multiple asserts. Code grows fast, a lot of repetitions, hard to read.
(def person
{:age 42
:name "Health Samurai"
:email "samurai@hs.io"
:favorite {:numbers [1 3 17]}})
(is (even? (get person :age)))
(is (re-find #"Health.*" (get person :name)))
(is (= [1 3 17] (get-in person [:favorite :numbers])))Solution
Part of expected datastructure can be used as a pattern. If exact value not know
a predicate or spec can be used instead of it. matcho/match will check if
expected value matches the pattern(s) and assert with is.
(def person-pattern
{:age #(even? %)
:name #"Health.*"
:favorite {:numbers [1 3 17]}})
(match person person-pattern)Usage
Add following project dependency to deps.edn:
{healthsamurai/matcho {:mvn/version "RELEASE"}}Snippets
Understand and pick out needed parts:
(ns hello-world.core
(:require [clojure.test :refer :all]
[matcho.core :as :m]))
(s/def ::pos-coll (s/coll-of pos?))
(deftest readme-test
(is (m/valid? pos? 1))
(m/assert 1 1)
(m/assert {:status #(< % 300)
:body #(not (empty? %))}
{:status 200
:body "hello"})
(m/assert ::pos-coll [1 2 3])
(m/assert [{:expected #"conforms.*pos-coll"}]
(m/explain-data ::pos-coll [1 -1 2])))
More advanced examples can be found here.
License
Copyright © 2016 HealthSamurai
Distributed under the Eclipse Public License either version 1.0 or (at your option) any later version.
