adding mermaid packages

node_modules/npm/test/network/git-cache-locking.js

@@ -0,0 +1,45 @@
+var test = require('tap').test
+var common = require('../common-tap')
+var path = require('path')
+var rimraf = require('rimraf')
+var mkdirp = require('mkdirp')
+var pkg = path.resolve(__dirname, 'git-cache-locking')
+var tmp = path.join(pkg, 'tmp')
+var cache = path.join(pkg, 'cache')
+var shallowClone = Object.assign || require('util')._extend
+
+test('setup', function (t) {
+  rimraf.sync(pkg)
+  mkdirp.sync(path.resolve(pkg, 'node_modules'))
+  t.end()
+})
+
+test('git-cache-locking: install a git dependency', function (t) {
+  // disable git integration tests on Travis.
+  if (process.env.TRAVIS) return t.end()
+
+  var gitEnv = shallowClone({}, process.env)
+  gitEnv.npm_config_cache = cache
+  gitEnv.npm_config_tmp = tmp
+  gitEnv.npm_config_prefix = pkg
+  gitEnv.npm_config_global = 'false'
+
+  // package c depends on a.git#master and b.git#master
+  // package b depends on a.git#master
+  common.npm([
+    'install',
+    'git://github.com/nigelzor/npm-4503-c.git'
+  ], {
+    cwd: pkg,
+    env: gitEnv
+  }, function (err, code, stdout, stderr) {
+    if (err) throw err
+    t.equal(0, code, 'npm install should succeed')
+    t.end()
+  })
+})
+
+test('cleanup', function (t) {
+  rimraf.sync(pkg)
+  t.end()
+})