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const { describe, it } = require('mocha')
const assert = require('assert')
const bscriptSig = require('../src/script').signature
const Buffer = require('safe-buffer').Buffer
const fixtures = require('./fixtures/signature.json')
describe('Script Signatures', function () {
function fromRaw (signature) {
return Buffer.concat([
Buffer.from(signature.r, 'hex'),
Buffer.from(signature.s, 'hex')
], 64)
}
function toRaw (signature) {
return {
r: signature.slice(0, 32).toString('hex'),
s: signature.slice(32, 64).toString('hex')
}
}
describe('encode', function () {
fixtures.valid.forEach(function (f) {
it('encodes ' + f.hex, function () {
const buffer = bscriptSig.encode(fromRaw(f.raw), f.hashType)
assert.strictEqual(buffer.toString('hex'), f.hex)
})
})
fixtures.invalid.forEach(function (f) {
if (!f.raw) return
it('throws ' + f.exception, function () {
const signature = fromRaw(f.raw)
assert.throws(function () {
bscriptSig.encode(signature, f.hashType)
}, new RegExp(f.exception))
})
})
})
describe('decode', function () {
fixtures.valid.forEach(function (f) {
it('decodes ' + f.hex, function () {
const decode = bscriptSig.decode(Buffer.from(f.hex, 'hex'))
assert.deepEqual(toRaw(decode.signature), f.raw)
assert.strictEqual(decode.hashType, f.hashType)
})
})
fixtures.invalid.forEach(function (f) {
it('throws on ' + f.hex, function () {
const buffer = Buffer.from(f.hex, 'hex')
assert.throws(function () {
bscriptSig.decode(buffer)
}, new RegExp(f.exception))
})
})
})
})