--- /dev/null
+var fs = require('graceful-fs')
+var path = require('path')
+var existsSync = fs.existsSync || path.existsSync
+
+var mkdirp = require('mkdirp')
+var mr = require('npm-registry-mock')
+var osenv = require('osenv')
+var rimraf = require('rimraf')
+var test = require('tap').test
+
+var common = require('../common-tap.js')
+var server
+
+var pkg = path.resolve(__dirname, 'circular-dep')
+var minimist = path.join(pkg, 'minimist')
+
+var EXEC_OPTS = {
+ cwd: path.join(pkg, 'minimist/node_modules'),
+ npm_config_cache: path.join(pkg, 'cache')
+}
+
+var json = {
+ name: 'minimist',
+ version: '0.0.5',
+ dependencies: {
+ optimist: '0.6.0'
+ }
+}
+
+test('setup', function (t) {
+ t.comment('test for https://github.com/npm/npm/issues/4312')
+ setup(function () {
+ t.end()
+ })
+})
+
+test('installing a package that depends on the current package', function (t) {
+ common.npm(
+ [
+ '--registry', common.registry,
+ '--loglevel', 'silent',
+ 'install', 'optimist'
+ ],
+ EXEC_OPTS,
+ function (err, code, stdout, stderr) {
+ t.ifError(err, 'npm ran without issue')
+ t.notOk(code, 'npm ran without raising an error code')
+ t.notOk(stderr, 'no error output')
+
+ common.npm(
+ [
+ '--registry', common.registry,
+ '--loglevel', 'silent',
+ 'dedupe'
+ ],
+ EXEC_OPTS,
+ function (err, code, stdout, stderr) {
+ t.ifError(err, 'npm ran without issue')
+ t.notOk(code, 'npm ran without raising an error code')
+ t.notOk(stderr, 'no error output')
+
+ t.ok(existsSync(path.resolve(
+ minimist,
+ 'node_modules', 'optimist',
+ 'node_modules', 'minimist'
+ )), 'circular dependency uncircled')
+ t.end()
+ }
+ )
+ }
+ )
+})
+
+test('cleanup', function (t) {
+ cleanup()
+ server.close()
+ t.end()
+})
+
+function setup (cb) {
+ cleanup()
+ mkdirp.sync(minimist)
+ fs.writeFileSync(
+ path.join(minimist, 'package.json'),
+ JSON.stringify(json, null, 2)
+ )
+ process.chdir(path.resolve(pkg, 'minimist'))
+
+ fs.mkdirSync(path.resolve(pkg, 'minimist/node_modules'))
+ mr({ port: common.port }, function (er, s) {
+ server = s
+ cb()
+ })
+}
+
+function cleanup () {
+ process.chdir(osenv.tmpdir())
+ rimraf.sync(pkg)
+}