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https://github.com/TheAlgorithms/JavaScript.git
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268796b0e8
* added fibonacci using formula along with test cases * updated the changes * added jest's each in test cases * added jest's each for testing * returned inline value * removed redundant comment * hoisted the variables * Use shorthand * considered adding resource of the formula --------- Co-authored-by: madhuredra <madhuredra.tiwari@zemosolabs.com> Co-authored-by: Lars Müller <34514239+appgurueu@users.noreply.github.com>
107 lines
3.5 KiB
JavaScript
107 lines
3.5 KiB
JavaScript
import {
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FibonacciDpWithoutRecursion,
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FibonacciRecursiveDP,
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FibonacciIterative,
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FibonacciGenerator,
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FibonacciRecursive,
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FibonacciMatrixExpo,
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FibonacciUsingFormula
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} from '../Fibonacci'
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describe('Fibonacci', () => {
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it('should return an array of numbers for FibonacciIterative', () => {
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expect(FibonacciIterative(6)).toEqual(
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expect.arrayContaining([0, 1, 1, 2, 3, 5, 8])
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)
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expect(FibonacciIterative(-6)).toEqual(
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expect.arrayContaining([0, 1, -1, 2, -3, 5, -8])
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)
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})
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it('should return number for FibonacciGenerator', () => {
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const positive = FibonacciGenerator()
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expect(positive.next().value).toBe(0)
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expect(positive.next().value).toBe(1)
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expect(positive.next().value).toBe(1)
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expect(positive.next().value).toBe(2)
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expect(positive.next().value).toBe(3)
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expect(positive.next().value).toBe(5)
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expect(positive.next().value).toBe(8)
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const negative = FibonacciGenerator(true)
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expect(negative.next().value).toBe(0)
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expect(negative.next().value).toBe(1)
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expect(negative.next().value).toBe(-1)
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expect(negative.next().value).toBe(2)
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expect(negative.next().value).toBe(-3)
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expect(negative.next().value).toBe(5)
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expect(negative.next().value).toBe(-8)
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})
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it('should return an array of numbers for FibonacciRecursive', () => {
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expect(FibonacciRecursive(6)).toEqual(
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expect.arrayContaining([0, 1, 1, 2, 3, 5, 8])
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)
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expect(FibonacciRecursive(-6)).toEqual(
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expect.arrayContaining([-0, 1, -1, 2, -3, 5, -8])
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)
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})
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it('should return number for FibonacciRecursiveDP', () => {
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expect(FibonacciRecursiveDP(6)).toBe(8)
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expect(FibonacciRecursiveDP(-6)).toBe(-8)
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})
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it('should return an array of numbers for FibonacciDpWithoutRecursion', () => {
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expect(FibonacciDpWithoutRecursion(6)).toEqual(
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expect.arrayContaining([0, 1, 1, 2, 3, 5, 8])
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)
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expect(FibonacciDpWithoutRecursion(-6)).toEqual(
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expect.arrayContaining([0, 1, -1, 2, -3, 5, -8])
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)
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})
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it('should return number for FibonacciMatrixExpo', () => {
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expect(FibonacciMatrixExpo(0)).toBe(0)
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expect(FibonacciMatrixExpo(1)).toBe(1)
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expect(FibonacciMatrixExpo(2)).toBe(1)
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expect(FibonacciMatrixExpo(3)).toBe(2)
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expect(FibonacciMatrixExpo(4)).toBe(3)
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expect(FibonacciMatrixExpo(5)).toBe(5)
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expect(FibonacciMatrixExpo(6)).toBe(8)
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expect(FibonacciMatrixExpo(-0)).toBe(-0)
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expect(FibonacciMatrixExpo(-1)).toBe(1)
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expect(FibonacciMatrixExpo(-2)).toBe(-1)
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expect(FibonacciMatrixExpo(-3)).toBe(2)
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expect(FibonacciMatrixExpo(-4)).toBe(-3)
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expect(FibonacciMatrixExpo(-5)).toBe(5)
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expect(FibonacciMatrixExpo(-6)).toBe(-8)
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})
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it('should return bigint for FibonacciMatrixExpo', () => {
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expect(FibonacciMatrixExpo(0n)).toBe(0n)
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expect(FibonacciMatrixExpo(1n)).toBe(1n)
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expect(FibonacciMatrixExpo(2n)).toBe(1n)
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expect(FibonacciMatrixExpo(3n)).toBe(2n)
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expect(FibonacciMatrixExpo(4n)).toBe(3n)
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expect(FibonacciMatrixExpo(5n)).toBe(5n)
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expect(FibonacciMatrixExpo(6n)).toBe(8n)
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expect(FibonacciMatrixExpo(-0n)).toBe(0n)
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expect(FibonacciMatrixExpo(-1n)).toBe(1n)
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expect(FibonacciMatrixExpo(-2n)).toBe(-1n)
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expect(FibonacciMatrixExpo(-3n)).toBe(2n)
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expect(FibonacciMatrixExpo(-4n)).toBe(-3n)
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expect(FibonacciMatrixExpo(-5n)).toBe(5n)
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expect(FibonacciMatrixExpo(-6n)).toBe(-8n)
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})
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it.each([
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[0, 0],
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[1, 1],
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[15, 610]
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])('should calculate the correct Fibonacci number for n = %i', (n, expected) => {
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expect(FibonacciUsingFormula(n)).toBe(expected)
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})
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})
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