export const tests = []
const t = (f) => tests.push(f)

// create specialized functions
t(({ ctx }) => {
  ctx.isFrench = hasCity('France', [
    'Bordeaux',
    'Paris',
    'Lille',
    'Lyon',
    'Marseille',
    'Saint-Étienne',
  ])
  ctx.isUS = hasCity('the US', [
    'New York',
    'Chicago',
    'San Francisco',
    'Washington DC',
    'Los Angeles',
  ])
  ctx.isChinese = hasCity('China', [
    'Beijing',
    'Shanghai',
    'Wuhan',
    'Shenzhen',
    'Tianjin',
    'Chengdu',
  ])
  return true
})

t(({ eq, ctx }) => eq(ctx.isChinese('Beijing'), 'Beijing is a city from China'))
t(({ eq, ctx }) => eq(ctx.isFrench('Lille'), 'Lille is a city from France'))
t(({ eq, ctx }) => eq(ctx.isUS('New York'), 'New York is a city from the US'))
t(({ eq, ctx }) => eq(ctx.isChinese('Tokyo'), 'Tokyo is not a city from China'))
t(({ eq, ctx }) => eq(ctx.isFrench('Paris'), 'Paris is a city from France'))
t(({ eq, ctx }) => eq(ctx.isUS('Abidjan'), 'Abidjan is not a city from the US'))
t(({ eq, ctx }) => eq(ctx.isChinese('Seul'), 'Seul is not a city from China'))
t(({ eq, ctx }) => eq(ctx.isUS(''), ' is not a city from the US'))
t(({ eq, ctx }) => eq(ctx.isChinese('Wuhan'), 'Wuhan is a city from China'))

t(({ eq, ctx }) =>
  eq(ctx.isFrench('Lisbon'), 'Lisbon is not a city from France'),
)

t(({ eq, ctx }) =>
  eq(ctx.isUS('Los Angeles'), 'Los Angeles is a city from the US'),
)

t(({ eq, ctx }) =>
  eq(ctx.isFrench('Chengdu'), 'Chengdu is not a city from France'),
)

Object.freeze(tests)