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const db = (() => {
//countries that won the FIFA World Cup
const countries = [
{ id: 1, name: 'Brazil', continent: 'South America' },
{ id: 2, name: 'Germany', continent: 'Europe' },
{ id: 3, name: 'Italy', continent: 'Europe' },
{ id: 4, name: 'Argentina', continent: 'South America' },
{ id: 5, name: 'France', continent: 'Europe' },
{ id: 6, name: 'Uruguay', continent: 'South America' },
{ id: 7, name: 'England', continent: 'Europe' },
{ id: 8, name: 'Spain', continent: 'Europe' },
]
//Information about the wins
const results = [
{ id: 1, countryId: 6, year: 1930, score: '4-2' },
{ id: 2, countryId: 3, year: 1934, score: '2-1' },
{ id: 3, countryId: 3, year: 1938, score: '4-2' },
{ id: 4, countryId: 6, year: 1950, score: '2-1' },
{ id: 5, countryId: 2, year: 1954, score: '3-2' },
{ id: 6, countryId: 1, year: 1958, score: '5-2' },
{ id: 7, countryId: 1, year: 1962, score: '3-1' },
{ id: 8, countryId: 7, year: 1966, score: '4-2' },
{ id: 9, countryId: 1, year: 1970, score: '4-1' },
{ id: 10, countryId: 2, year: 1974, score: '2-1' },
{ id: 11, countryId: 4, year: 1978, score: '3-1' },
{ id: 12, countryId: 3, year: 1982, score: '3-1' },
{ id: 13, countryId: 4, year: 1986, score: '3-2' },
{ id: 14, countryId: 2, year: 1990, score: '1-0' },
{ id: 15, countryId: 1, year: 1994, score: '3-2p' },
{ id: 16, countryId: 5, year: 1998, score: '3-0' },
{ id: 17, countryId: 1, year: 2002, score: '2-0' },
{ id: 18, countryId: 3, year: 2006, score: '5-3p' },
{ id: 19, countryId: 8, year: 2010, score: '1-0' },
{ id: 20, countryId: 2, year: 2014, score: '1-0' },
{ id: 21, countryId: 5, year: 2018, score: '4-2' },
]
return {
//returns the information of the country
getWinner: async (countryName) => {
const match = countries.find((country) => country.name === countryName)
if (!match) throw Error('Country Not Found')
return match
},
//returns the information of the wins of that country
getResults: async (countryId) => {
const match = results.filter((result) => result.countryId === countryId)
if (!match.length) throw Error('Results Not Found')
return match
},
addCountry: (country) => countries.push(country),
addResults: (result) => results.push(result),
}
})()
// /*/ // ⚡
export const tests = []
const t = (f) => tests.push(f)
t(async ({ eq }) =>
// testing correct continent but wrong number of times
eq(
await isWinner('England'),
'England is not what we are looking for because of the number of times it was champion'
)
)
t(async ({ eq }) =>
// testing non winner country
eq(await isWinner('Colombia'), 'Colombia never was a winner')
)
t(async ({ eq }) =>
// testing wrong continent country
eq(
await isWinner('Uruguay'),
'Uruguay is not what we are looking for because of the continent'
)
)
t(async ({ eq }) =>
// testing no country
eq(await isWinner(''), ' never was a winner')
)
t(async ({ eq }) =>
// testing correct number of times but wrong continent
eq(
await isWinner('Brazil'),
'Brazil is not what we are looking for because of the continent'
)
)
t(async ({ eq }) =>
// testing correct number of times and correct continent
eq(
await isWinner('Germany'),
'Germany won the FIFA World Cup in 1954, 1974, 1990, 2014 winning by 3-2, 2-1, 1-0, 1-0'
)
)
t(async ({ eq, ctx }) =>
// testing correct number of times and correct continent, for the fake country
eq(
await isWinner(ctx.name),
`${ctx.name} won the FIFA World Cup in 2022, 2026, 2030 winning by 1-0, 3-1, 2-1`
)
)
Object.freeze(tests)
export const setup = () => {
const seed = Math.random()
const name = seed.toString(36).slice(2)
db.addCountry({ id: 9, name, continent: 'Europe' })
db.addResults({ countryId: 9, year: 2022, score: '1-0' })
db.addResults({ countryId: 9, year: 2026, score: '3-1' })
db.addResults({ countryId: 9, year: 2030, score: '2-1' })
return { name }
}