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diff --git a/deps/npm/node_modules/cacache/node_modules/mississippi/node_modules/duplexify/test.js b/deps/npm/node_modules/cacache/node_modules/mississippi/node_modules/duplexify/test.js
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index 0000000000..4330e93cf0
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+++ b/deps/npm/node_modules/cacache/node_modules/mississippi/node_modules/duplexify/test.js
@@ -0,0 +1,291 @@
+var tape = require('tape')
+var through = require('through2')
+var concat = require('concat-stream')
+var net = require('net')
+var duplexify = require('./')
+
+tape('passthrough', function(t) {
+ t.plan(2)
+
+ var pt = through()
+ var dup = duplexify(pt, pt)
+
+ dup.end('hello world')
+ dup.on('finish', function() {
+ t.ok(true, 'should finish')
+ })
+ dup.pipe(concat(function(data) {
+ t.same(data.toString(), 'hello world', 'same in as out')
+ }))
+})
+
+tape('passthrough + double end', function(t) {
+ t.plan(2)
+
+ var pt = through()
+ var dup = duplexify(pt, pt)
+
+ dup.end('hello world')
+ dup.end()
+
+ dup.on('finish', function() {
+ t.ok(true, 'should finish')
+ })
+ dup.pipe(concat(function(data) {
+ t.same(data.toString(), 'hello world', 'same in as out')
+ }))
+})
+
+tape('async passthrough + end', function(t) {
+ t.plan(2)
+
+ var pt = through.obj({highWaterMark:1}, function(data, enc, cb) {
+ setTimeout(function() {
+ cb(null, data)
+ }, 100)
+ })
+
+ var dup = duplexify(pt, pt)
+
+ dup.write('hello ')
+ dup.write('world')
+ dup.end()
+
+ dup.on('finish', function() {
+ t.ok(true, 'should finish')
+ })
+ dup.pipe(concat(function(data) {
+ t.same(data.toString(), 'hello world', 'same in as out')
+ }))
+})
+
+tape('duplex', function(t) {
+ var readExpected = ['read-a', 'read-b', 'read-c']
+ var writeExpected = ['write-a', 'write-b', 'write-c']
+
+ t.plan(readExpected.length+writeExpected.length+2)
+
+ var readable = through.obj()
+ var writable = through.obj(function(data, enc, cb) {
+ t.same(data, writeExpected.shift(), 'onwrite should match')
+ cb()
+ })
+
+ var dup = duplexify.obj(writable, readable)
+
+ readExpected.slice().forEach(function(data) {
+ readable.write(data)
+ })
+ readable.end()
+
+ writeExpected.slice().forEach(function(data) {
+ dup.write(data)
+ })
+ dup.end()
+
+ dup.on('data', function(data) {
+ t.same(data, readExpected.shift(), 'ondata should match')
+ })
+ dup.on('end', function() {
+ t.ok(true, 'should end')
+ })
+ dup.on('finish', function() {
+ t.ok(true, 'should finish')
+ })
+})
+
+tape('async', function(t) {
+ var dup = duplexify()
+ var pt = through()
+
+ dup.pipe(concat(function(data) {
+ t.same(data.toString(), 'i was async', 'same in as out')
+ t.end()
+ }))
+
+ dup.write('i')
+ dup.write(' was ')
+ dup.end('async')
+
+ setTimeout(function() {
+ dup.setWritable(pt)
+ setTimeout(function() {
+ dup.setReadable(pt)
+ }, 50)
+ }, 50)
+})
+
+tape('destroy', function(t) {
+ t.plan(2)
+
+ var write = through()
+ var read = through()
+ var dup = duplexify(write, read)
+
+ write.destroy = function() {
+ t.ok(true, 'write destroyed')
+ }
+
+ dup.on('close', function() {
+ t.ok(true, 'close emitted')
+ })
+
+ dup.destroy()
+ dup.destroy() // should only work once
+})
+
+tape('destroy both', function(t) {
+ t.plan(3)
+
+ var write = through()
+ var read = through()
+ var dup = duplexify(write, read)
+
+ write.destroy = function() {
+ t.ok(true, 'write destroyed')
+ }
+
+ read.destroy = function() {
+ t.ok(true, 'read destroyed')
+ }
+
+ dup.on('close', function() {
+ t.ok(true, 'close emitted')
+ })
+
+ dup.destroy()
+ dup.destroy() // should only work once
+})
+
+tape('bubble read errors', function(t) {
+ t.plan(2)
+
+ var write = through()
+ var read = through()
+ var dup = duplexify(write, read)
+
+ dup.on('error', function(err) {
+ t.same(err.message, 'read-error', 'received read error')
+ })
+ dup.on('close', function() {
+ t.ok(true, 'close emitted')
+ })
+
+ read.emit('error', new Error('read-error'))
+ write.emit('error', new Error('write-error')) // only emit first error
+})
+
+tape('bubble write errors', function(t) {
+ t.plan(2)
+
+ var write = through()
+ var read = through()
+ var dup = duplexify(write, read)
+
+ dup.on('error', function(err) {
+ t.same(err.message, 'write-error', 'received write error')
+ })
+ dup.on('close', function() {
+ t.ok(true, 'close emitted')
+ })
+
+ write.emit('error', new Error('write-error'))
+ read.emit('error', new Error('read-error')) // only emit first error
+})
+
+tape('reset writable / readable', function(t) {
+ t.plan(3)
+
+ var toUpperCase = function(data, enc, cb) {
+ cb(null, data.toString().toUpperCase())
+ }
+
+ var passthrough = through()
+ var upper = through(toUpperCase)
+ var dup = duplexify(passthrough, passthrough)
+
+ dup.once('data', function(data) {
+ t.same(data.toString(), 'hello')
+ dup.setWritable(upper)
+ dup.setReadable(upper)
+ dup.once('data', function(data) {
+ t.same(data.toString(), 'HELLO')
+ dup.once('data', function(data) {
+ t.same(data.toString(), 'HI')
+ t.end()
+ })
+ })
+ dup.write('hello')
+ dup.write('hi')
+ })
+ dup.write('hello')
+})
+
+tape('cork', function(t) {
+ var passthrough = through()
+ var dup = duplexify(passthrough, passthrough)
+ var ok = false
+
+ dup.on('prefinish', function() {
+ dup.cork()
+ setTimeout(function() {
+ ok = true
+ dup.uncork()
+ }, 100)
+ })
+ dup.on('finish', function() {
+ t.ok(ok)
+ t.end()
+ })
+ dup.end()
+})
+
+tape('prefinish not twice', function(t) {
+ var passthrough = through()
+ var dup = duplexify(passthrough, passthrough)
+ var prefinished = false
+
+ dup.on('prefinish', function() {
+ t.ok(!prefinished, 'only prefinish once')
+ prefinished = true
+ })
+
+ dup.on('finish', function() {
+ t.end()
+ })
+
+ dup.end()
+})
+
+tape('close', function(t) {
+ var passthrough = through()
+ var dup = duplexify(passthrough, passthrough)
+
+ passthrough.emit('close')
+ dup.on('close', function() {
+ t.ok(true, 'should forward close')
+ t.end()
+ })
+})
+
+tape('works with node native streams (net)', function(t) {
+ t.plan(1)
+
+ var server = net.createServer(function(socket) {
+ var dup = duplexify(socket, socket)
+
+ dup.once('data', function(chunk) {
+ t.same(chunk, Buffer('hello world'))
+ server.close()
+ socket.end()
+ t.end()
+ })
+ })
+
+ server.listen(0, function () {
+ var socket = net.connect(server.address().port)
+ var dup = duplexify(socket, socket)
+
+ dup.write(Buffer('hello world'))
+ })
+})