import { Abi } from 'ox'
import { describe, expectTypeOf, test } from 'vp/test'

describe('Abi.format', () => {
  test('infers abi', () => {
    const formatted = Abi.format(value)
    expectTypeOf(formatted).toEqualTypeOf([
      'function approve(address spender, uint256 amount) returns (bool)',
    ] as const)
  })

  test('not narrowable', () => {
    const abi = {} as Abi.Abi
    const formatted = Abi.format(abi)
    expectTypeOf(formatted).toEqualTypeOf<readonly string[]>()
  })

  const value = [
    {
      type: 'function',
      name: 'approve',
      stateMutability: 'nonpayable',
      inputs: [
        {
          name: 'spender',
          type: 'address',
        },
        {
          name: 'amount',
          type: 'uint256',
        },
      ],
      outputs: [{ type: 'bool' }],
    },
  ] as const
})

describe('Abi.from', () => {
  test('infers abi', () => {
    const abi = Abi.from(value)
    expectTypeOf(abi).toEqualTypeOf(value)
  })

  test('from signatures', () => {
    const abi = Abi.from([
      'function approve(address spender, uint256 amount) returns (bool)',
    ])
    expectTypeOf(abi).toEqualTypeOf(value)
  })

  test('not narrowable', () => {
    const abi = Abi.from({} as Abi.Abi)
    expectTypeOf(abi).toEqualTypeOf<Abi.Abi>()
  })

  const value = [
    {
      type: 'function',
      name: 'approve',
      stateMutability: 'nonpayable',
      inputs: [
        {
          name: 'spender',
          type: 'address',
        },
        {
          name: 'amount',
          type: 'uint256',
        },
      ],
      outputs: [{ type: 'bool' }],
    },
  ] as const
})