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var tape = require('tape')
var from = require('from2')
var iterate = require('./')
tape('merge sort', function (t) {
var a = from.obj(['a', 'b', 'd', 'e', 'g', 'h'])
var b = from.obj(['b', 'c', 'f'])
var output = []
var readA = iterate(a)
var readB = iterate(b)
var loop = function () {
readA(function (err, dataA, nextA) {
if (err) throw err
readB(function (err, dataB, nextB) {
if (err) throw err
if (!dataA && !dataB) {
t.same(output, ['a', 'b', 'b', 'c', 'd', 'e', 'f', 'g', 'h'], 'sorts list')
t.end()
return
}
if (!dataB || dataA < dataB) {
output.push(dataA)
nextA()
return loop()
}
if (!dataA || dataA > dataB) {
output.push(dataB)
nextB()
return loop()
}
output.push(dataA)
output.push(dataB)
nextA()
nextB()
loop()
})
})
}
loop()
})
tape('error handling', function (t) {
var a = from.obj(['a', 'b', 'd', 'e', 'g', 'h'])
var read = iterate(a)
a.destroy(new Error('oh no'))
read(function (err) {
t.ok(err, 'had error')
t.same(err.message, 'oh no')
t.end()
})
})