number-name/src/systems/en/base/kilo/combiningPrefix.test.ts

import combiningPrefix from './combiningPrefix'

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

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

it('should accept a minimum of 3 arguments', () => {
  expect(combiningPrefix).toHaveLength(3)
})

describe('on 0 in hundreds place', () => {
  describe('on 0 in tens place', () => {
    test.each`
      value | display | name
      ${1}  | ${'1'}  | ${'mi'}
      ${2}  | ${'2'}  | ${'bi'}
      ${3}  | ${'3'}  | ${'tri'}
      ${4}  | ${'4'}  | ${'quadri'}
      ${5}  | ${'5'}  | ${'quinti'}
      ${6}  | ${'6'}  | ${'sexti'}
      ${7}  | ${'7'}  | ${'septi'}
      ${8}  | ${'8'}  | ${'octi'}
      ${9}  | ${'9'}  | ${'noni'}
    `('should return "$name" on $display', ({ value, name }) => {
      expect(combiningPrefix(0n, 0, value)).toBe(name)
    })
  })

  describe.each`
    tens | tensName
    ${1} | ${'deci'}
    ${2} | ${'viginti'}
    ${3} | ${'triginti'}
    ${4} | ${'quadraginti'}
    ${5} | ${'quinquaginti'}
    ${6} | ${'sexaginti'}
    ${7} | ${'septuaginti'}
    ${8} | ${'octoginti'}
    ${9} | ${'nonaginti'}
  `('on $tens in tens place', ({ tens, tensName }) => {
    test.each`
      ones | display
      ${0} | ${tensName}
      ${1} | ${'un' + tensName}
      ${2} | ${'duo' + tensName}
      ${3} | ${'tre' + tensName}
      ${4} | ${'quattuor' + tensName}
      ${5} | ${'quin' + tensName}
      ${6} | ${'sex' + tensName}
      ${7} | ${'septen' + tensName}
      ${8} | ${'octo' + tensName}
      ${9} | ${'novem' + tensName}
    `(`should return "$display" for ${tens}$ones`, ({ ones, display }) => {
      expect(combiningPrefix(0n, tens, ones)).toBe(display)
    })
  })
})

describe.each`
  hundreds | hundredsName
  ${1n}    | ${'cen'}
  ${2n}    | ${'duocen'}
  ${3n}    | ${'trecen'}
  ${4n}    | ${'quadringen'}
  ${5n}    | ${'quingen'}
  ${6n}    | ${'sescen'}
  ${7n}    | ${'septingen'}
  ${8n}    | ${'octingen'}
  ${9n}    | ${'nongen'}
`('on $hundreds in hundreds place', ({ hundreds, hundredsName }) => {
  describe.each`
    tens | tensName
    ${0} | ${'ti'}
    ${1} | ${'deci'}
    ${2} | ${'viginti'}
    ${3} | ${'triginti'}
    ${4} | ${'quadraginti'}
    ${5} | ${'quinquaginti'}
    ${6} | ${'sexaginti'}
    ${7} | ${'septuaginti'}
    ${8} | ${'octoginti'}
    ${9} | ${'nonaginti'}
  `('on $tens in tens place', ({ tens, tensName }) => {
    test.each`
      ones | display
      ${0} | ${hundredsName + tensName}
      ${1} | ${hundredsName + 'un' + tensName}
      ${2} | ${hundredsName + 'duo' + tensName}
      ${3} | ${hundredsName + 'tre' + tensName}
      ${4} | ${hundredsName + 'quattuor' + tensName}
      ${5} | ${hundredsName + 'quin' + tensName}
      ${6} | ${hundredsName + 'sex' + tensName}
      ${7} | ${hundredsName + 'septen' + tensName}
      ${8} | ${hundredsName + 'octo' + tensName}
      ${9} | ${hundredsName + 'novem' + tensName}
    `(`should return "$display" for ${hundreds}${tens}$ones`, ({ ones, display }) => {
      expect(combiningPrefix(hundreds, tens, ones)).toBe(display)
    })
  })
})

describe.each`
  hundredThousands | hundredThousandsName
  ${1n}            | ${'cen'}
  ${2n}            | ${'duocen'}
  ${3n}            | ${'trecen'}
  ${4n}            | ${'quadringen'}
  ${5n}            | ${'quingen'}
  ${6n}            | ${'sescen'}
  ${7n}            | ${'septingen'}
  ${8n}            | ${'octingen'}
  ${9n}            | ${'nongen'}
`('on $hundredThousands in hundred thousands place', ({ hundredThousands, hundredThousandsName }) => {
  describe.each`
    tenThousands | tenThousandsName
    ${0n}        | ${''}
    ${1n}        | ${'dec'}
    ${2n}        | ${'vigin'}
    ${3n}        | ${'trigin'}
    ${4n}        | ${'quadragin'}
    ${5n}        | ${'quinquagin'}
    ${6n}        | ${'sexagin'}
    ${7n}        | ${'septuagin'}
    ${8n}        | ${'octogin'}
    ${9n}        | ${'nonagin'}
  `('on $tenThousands in ten thousands place', ({ tenThousands, tenThousandsName }) => {
    test.each`
      thousands | display                                          | name
      ${0n}     | ${hundredThousands + '' + tenThousands + '0000'} | ${hundredThousandsName + tenThousandsName + 'milliati'}
      ${1000n}  | ${hundredThousands + '' + tenThousands + '1000'} | ${hundredThousandsName + 'un' + tenThousandsName + 'milliati'}
      ${2000n}  | ${hundredThousands + '' + tenThousands + '2000'} | ${hundredThousandsName + 'duo' + tenThousandsName + 'milliati'}
      ${3000n}  | ${hundredThousands + '' + tenThousands + '3000'} | ${hundredThousandsName + 'tre' + tenThousandsName + 'milliati'}
      ${4000n}  | ${hundredThousands + '' + tenThousands + '4000'} | ${hundredThousandsName + 'quattuor' + tenThousandsName + 'milliati'}
      ${5000n}  | ${hundredThousands + '' + tenThousands + '5000'} | ${hundredThousandsName + 'quin' + tenThousandsName + 'milliati'}
      ${6000n}  | ${hundredThousands + '' + tenThousands + '6000'} | ${hundredThousandsName + 'sex' + tenThousandsName + 'milliati'}
      ${7000n}  | ${hundredThousands + '' + tenThousands + '7000'} | ${hundredThousandsName + 'septen' + tenThousandsName + 'milliati'}
      ${8000n}  | ${hundredThousands + '' + tenThousands + '8000'} | ${hundredThousandsName + 'octo' + tenThousandsName + 'milliati'}
      ${9000n}  | ${hundredThousands + '' + tenThousands + '9000'} | ${hundredThousandsName + 'novem' + tenThousandsName + 'milliati'}
    `(`should return "$name" for $display`, ({ thousands, name }) => {
      const kiloHundreds = hundredThousands * 1000n + tenThousands * 100n + thousands / 100n
      expect(combiningPrefix(kiloHundreds, 0, 0)).toBe(name)
    })
  })
})

test.each`
  value | display      | name
  ${1n} | ${'1000000'} | ${'milliamilliati'}
  ${2n} | ${'2000000'} | ${'duomilliamilliati'}
  ${3n} | ${'3000000'} | ${'tremilliamilliati'}
  ${4n} | ${'4000000'} | ${'quattuormilliamilliati'}
  ${5n} | ${'5000000'} | ${'quinmilliamilliati'}
  ${6n} | ${'6000000'} | ${'sexmilliamilliati'}
  ${7n} | ${'7000000'} | ${'septenmilliamilliati'}
  ${8n} | ${'8000000'} | ${'octomilliamilliati'}
  ${9n} | ${'9000000'} | ${'novemmilliamilliati'}
`('should return "$name" on $display', ({ value, name }) => {
  expect(combiningPrefix(value * 10000n, 0, 0)).toBe(name)
})

test.each`
  value | display      | name
  ${1n} | ${'1001000'} | ${'milliamilliaunmilliati'}
  ${2n} | ${'2002000'} | ${'duomilliamilliaduomilliati'}
  ${3n} | ${'3003000'} | ${'tremilliamilliatremilliati'}
  ${4n} | ${'4004000'} | ${'quattuormilliamilliaquattuormilliati'}
  ${5n} | ${'5005000'} | ${'quinmilliamilliaquinmilliati'}
  ${6n} | ${'6006000'} | ${'sexmilliamilliasexmilliati'}
  ${7n} | ${'7007000'} | ${'septenmilliamilliaseptenmilliati'}
  ${8n} | ${'8008000'} | ${'octomilliamilliaoctomilliati'}
  ${9n} | ${'9009000'} | ${'novemmilliamillianovemmilliati'}
`('should return "$name" on $display', ({ value, name }) => {
  expect(combiningPrefix(value * 10010n, 0, 0)).toBe(name)
})