number-name/src/systems/tl/construct/tens.test.ts

import tensFn from './tens'

it('should exist', () => {
  expect(tensFn).toBeDefined()
})

it('should be a callable', () => {
  expect(typeof tensFn).toBe('function')
})

it('should accept 2 arguments', () => {
  expect(tensFn).toHaveLength(2)
})

describe('on 0 in tens place', () => {
  test.each`
    ones | onesName
    ${0} | ${'sero'}
    ${1} | ${'isa'}
    ${2} | ${'dalawa'}
    ${3} | ${'tatlo'}
    ${4} | ${'apat'}
    ${5} | ${'lima'}
    ${6} | ${'anim'}
    ${7} | ${'pito'}
    ${8} | ${'walo'}
    ${9} | ${'siyam'}
  `(`should return "$onesName" for $ones`, ({ ones, onesName }) => {
    expect(tensFn(0, ones)).toBe(onesName)
  })
})

describe('on 1 in tens place', () => {
  test.each`
    ones | tenPlusName
    ${0} | ${'sampu'}
    ${1} | ${'labing-isa'}
    ${2} | ${'labindalawa'}
    ${3} | ${'labintatlo'}
    ${4} | ${'labing-apat'}
    ${5} | ${'labinlima'}
    ${6} | ${'labing-anim'}
    ${7} | ${'labimpito'}
    ${8} | ${'labingwalo'}
    ${9} | ${'labinsiyam'}
  `(`should return "$tenPlusName" for 1$ones`, ({ ones, tenPlusName }) => {
    expect(tensFn(1, ones)).toBe(tenPlusName)
  })
})

describe.each`
  tens | tensName
  ${2} | ${'dalawampu'}
  ${3} | ${'tatlumpu'}
  ${4} | ${'apatnapu'}
  ${5} | ${'limampu'}
  ${6} | ${'animnapu'}
  ${7} | ${'pitumpu'}
  ${8} | ${'walumpu'}
  ${9} | ${'siyamnapu'}
`('on $tens in tens place', ({ tens, tensName }) => {
  test.each`
    ones | onesName
    ${0} | ${''}
    ${1} | ${"'t isa"}
    ${2} | ${"'t dalawa"}
    ${3} | ${"'t tatlo"}
    ${4} | ${"'t apat"}
    ${5} | ${"'t lima"}
    ${6} | ${"'t anim"}
    ${7} | ${"'t pito"}
    ${8} | ${"'t walo"}
    ${9} | ${"'t siyam"}
  `(`should return "${tensName}$onesName" for ${tens}$ones`, ({ ones, onesName }) => {
    expect(tensFn(tens, ones)).toBe([tensName, onesName].join(''))
  })
})