clojure.test tutorial

(ns example.basic-types-tests

  (:gen-class)

  (:require [clojure.test :refer [deftest testing is use-fixtures]]

            [example.basic-types :as basic]

            [clojure.spec :as s]

            [clojure.spec.gen :as gen]))

(defn once-fixture [f]

  (println "Prepare for for all tests...")

  (f)

  (println "Clean up after all tests..."))

(defn before-any-test-fixture [f]

  (println "Next test preparation...")

  (f)

  (println "Clean up after test..."))

(use-fixtures :once once-fixture)

(use-fixtures :each before-any-test-fixture)

(deftest basic-types-spec

  (testing "testing basic types spec"

    (is (= 1 1))))

(deftest basic-types-generator-test

  (testing "testing generators for basic types"

    (is (= 1000 (count (gen/sample (s/gen ::basic/string) 1000))))))

(deftest arithmetic-test

  (testing "this should throw exception"

    (is (thrown? ArithmeticException (/ 1 0)))))

;; This will make tests hook: only specified tests will be run.

;; Warining! if hook was installed then only specified tests will be run

;; to disable hook perform (ns-unmap *ns* 'test-ns-hook)

;(defn test-ns-hook []

;  (basic-types-generator-test))

;; To run particular test form some namespace use follwing command in repl:

;;(clojure.test/test-vars [#'example.basic-types-tests/arithmetic-test])

;; if everything ok it returns nil, otherwise returns report. This will run test with existing fixtures

;; or lein test :only my.namespace/my-test