var tape = require('tape')
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var Hash = require('../hash')
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var hex = '0A1B2C3D4E5F6G7H'
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function equal (t, a, b) {
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t.equal(a.length, b.length)
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t.equal(a.toString('hex'), b.toString('hex'))
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}
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var hexBuf = Buffer.from('0A1B2C3D4E5F6G7H', 'utf8')
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var count16 = {
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strings: ['0A1B2C3D4E5F6G7H'],
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buffers: [
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hexBuf,
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Buffer.from('80000000000000000000000000000080', 'hex')
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]
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}
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var empty = {
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strings: [''],
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buffers: [
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Buffer.from('80000000000000000000000000000000', 'hex')
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]
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}
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var multi = {
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strings: ['abcd', 'efhijk', 'lmnopq'],
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buffers: [
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Buffer.from('abcdefhijklmnopq', 'ascii'),
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Buffer.from('80000000000000000000000000000080', 'hex')
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]
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}
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var long = {
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strings: [hex + hex],
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buffers: [
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hexBuf,
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hexBuf,
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Buffer.from('80000000000000000000000000000100', 'hex')
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]
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}
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function makeTest (name, data) {
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tape(name, function (t) {
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var h = new Hash(16, 8)
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var hash = Buffer.alloc(20)
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var n = 2
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var expected = data.buffers.slice()
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// t.plan(expected.length + 1)
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h._update = function (block) {
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var e = expected.shift()
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equal(t, block, e)
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if (n < 0) {
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throw new Error('expecting only 2 calls to _update')
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}
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}
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h._hash = function () {
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return hash
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}
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data.strings.forEach(function (string) {
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h.update(string, 'ascii')
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})
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equal(t, h.digest(), hash)
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t.end()
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})
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}
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makeTest('Hash#update 1 in 1', count16)
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makeTest('empty Hash#update', empty)
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makeTest('Hash#update 1 in 3', multi)
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makeTest('Hash#update 2 in 1', long)
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