Tutorial by Examples

The is macro is the core of the clojure.test library. It returns the value of its body expression, printing an error message if the expression returns a falsey value. (defn square [x] (+ x x)) (require '[clojure.test :as t]) (t/is (= 0 (square 0))) ;;=> true (t/is (= 1 (square 1))) ...

You can group related assertions in deftest unit tests within a context using the testing macro: (deftest add-nums (testing "Positive cases" (is (= 2 (+ 1 1))) (is (= 4 (+ 2 2)))) (testing "Negative cases" (is (= -1 (+ 2 -3))) (is (= -4 (+ 8 -12))))) ...

deftest is a macro for defining a unit test, similar to unit tests in other languages. You can create a test as follows: (deftest add-nums (is (= 2 (+ 1 1))) (is (= 3 (+ 1 2)))) Here we are defining a test called add-nums, which tests the + function. The test has two assertions. You can ...

The are macro is also part of the clojure.test library. It allows you to make multiple assertions against a template. For example: (are [x y] (= x y) 4 (+ 2 2) 8 (* 2 4)) => true Here, (= x y) acts as a template which takes each argument and creates an is assertion out of it. Thi...

use-fixtures allows to wrap each deftest in namespace with code that runs before and after test. It can be used for fixtures or stubbing. Fixtures are just functions that take test function and run it with other necessary steps (before/after, wrap). (ns myapp.test (require [clojure.test :refer ...

If you are using Leiningen and your tests are located in the test directory in your project root then you can run your tests using lein test