Add jasmine tests

package.json

@@ -7,7 +7,7 @@
  "scripts": {
  "start": "nodemon src/index.js",
  "start-babel": "nodemon --exec babel-node src/index.js",
- "test": "echo \"Error: no test specified\" && exit 1"
+ "test": "jasmine"
  },
  "keywords": [],
  "author": "",
@@ -16,6 +16,7 @@
  "@babel/core": "^7.17.4",
  "@babel/node": "^7.16.8",
  "@babel/preset-env": "^7.12.11",
+ "jasmine": "^4.1.0",
  "nodemon": "^2.0.15"
  }
-}
+}

spec/recursion.spec.js

@@ -0,0 +1,16 @@
+import { findFactorialRecursive, findFactorialIterative } from '../src/algorithms/recursion.js'
+
+describe("Recursion function which", function () {
+ var resultRecursive;
+ var resultIterative;
+
+ it("calculates factorial recursively", function () {
+ resultRecursive = findFactorialRecursive(5);
+ expect(resultRecursive).toBe(120);
+ });
+ it("calculates factorial iteratively", function () {
+ resultIterative = findFactorialIterative(5);
+ expect(resultIterative).toBe(120);
+ });
+});
+

spec/support/jasmine.json

@@ -0,0 +1,13 @@
+{
+ "spec_dir": "spec",
+ "spec_files": [
+ "**/*[sS]pec.?(m)js"
+ ],
+ "helpers": [
+ "helpers/**/*.?(m)js"
+ ],
+ "env": {
+ "stopSpecOnExpectationFailure": false,
+ "random": true
+ }
+}

src/algorithms/recursion.js

@@ -9,6 +9,24 @@ function inception(counter) {
  return inception(--counter);
 }
 
+export function findFactorialRecursive(number) {
+ if (number < 2) {
+ return 1;
+ }
+ return number * findFactorialRecursive(--number);
+}
+
+export function findFactorialIterative(number) {
+ var result = 1;
+ while (number > 1) {
+ result *= number--;
+ }
+ return result;
+}
+
 export function test() {
- console.log(inception(3));
-}
+ const resultRecursive = findFactorialRecursive(5);
+ const resultIterative = findFactorialIterative(5);
+
+ return;
+}