JavaScript/Data-Structures/Array/test/LocalMaximumPoint.test.js

import { LocalMaximumPoint } from '../LocalMaximumPoint'

describe('LocalMaximumPoint tests', () => {
  it('test boundary maximum points - last element', () => {
    const Array = [1, 2, 3, 4, 5, 6, 12]
    expect(LocalMaximumPoint(Array)).toEqual(6)
  })

  it('test boundary maximum points - first element', () => {
    const Array2 = [13, 6, 5, 4, 3, 2, 1]
    expect(LocalMaximumPoint(Array2)).toEqual(0)
  })

  it('test boundary maximum points - should find first maximum point from the top', () => {
    // Test a mix of number types (i.e., positive/negative, numbers with decimals, fractions)
    const Array = [13, 2, 3, 4, 5, 6, 12]
    expect(LocalMaximumPoint(Array)).toEqual(6)
  })

  it('test inner points - second element', () => {
    const Array2 = [13, 16, 5, 4, 3, 2, 1]
    expect(LocalMaximumPoint(Array2)).toEqual(1)
  })

  it('test inner points - element some where in the middle', () => {
    const Array2 = [13, 16, 5, 41, 3, 2, 1]
    expect(LocalMaximumPoint(Array2)).toEqual(3)
  })
})