Simple monitor for displaying MIDI status for digital pianos.
Não pode escolher mais do que 25 tópicos Os tópicos devem começar com uma letra ou um número, podem incluir traços ('-') e podem ter até 35 caracteres.
 
 
 
 

65 linhas
1.7 KiB

  1. import * as fc from 'fast-check'
  2. import isNaturalKey from './isNaturalKey'
  3. it('should exist', () => {
  4. expect(isNaturalKey).toBeDefined()
  5. })
  6. it('should be a callable', () => {
  7. expect(typeof isNaturalKey).toBe('function')
  8. })
  9. it('should accept 1 parameter', () => {
  10. expect(isNaturalKey).toHaveLength(1)
  11. })
  12. it('should throw TypeError upon passing invalid types', () => {
  13. fc.assert(
  14. fc.property(
  15. fc.anything().filter((anything) => typeof anything !== 'number'),
  16. (anything) => {
  17. expect(() => isNaturalKey(anything as number)).toThrowError(TypeError)
  18. },
  19. ),
  20. )
  21. })
  22. it('should throw RangeError upon passing NaN', () => {
  23. expect(() => isNaturalKey(NaN)).toThrowError(RangeError)
  24. })
  25. it('should throw RangeError upon passing negative numbers', () => {
  26. fc.assert(
  27. fc.property(
  28. fc.anything().filter((anything) => typeof anything! === 'number' && !isNaN(anything) && anything < 0),
  29. (negativeValue) => {
  30. expect(() => isNaturalKey(negativeValue as number)).toThrowError(RangeError)
  31. },
  32. ),
  33. )
  34. })
  35. describe('upon passing a positive number or zero', () => {
  36. it('should not throw any error', () => {
  37. fc.assert(
  38. fc.property(
  39. fc.anything().filter((anything) => typeof anything! === 'number' && !isNaN(anything) && anything >= 0),
  40. (value) => {
  41. expect(() => isNaturalKey(value as number)).not.toThrow()
  42. },
  43. ),
  44. )
  45. })
  46. it('should return a boolean', () => {
  47. fc.assert(
  48. fc.property(
  49. fc.anything().filter((anything) => typeof anything! === 'number' && !isNaN(anything) && anything >= 0),
  50. (value) => {
  51. expect(typeof isNaturalKey(value as number)).toBe('boolean')
  52. },
  53. ),
  54. )
  55. })
  56. })