merge: Add test cases (#854)

Recursive/test/FibonacciNumberRecursive.test.js

@@ -0,0 +1,19 @@
+import { fibonacci } from '../FibonacciNumberRecursive'
+
+describe('FibonacciNumberRecursive', () => {
+  it('should return 0', () => {
+    expect(fibonacci(0)).toBe(0)
+  })
+
+  it('should return 1', () => {
+    expect(fibonacci(1)).toBe(1)
+  })
+
+  it('should return 5', () => {
+    expect(fibonacci(5)).toBe(5)
+  })
+
+  it('should return 9', () => {
+    expect(fibonacci(9)).toBe(34)
+  })
+})