--- /dev/null
+var fs = require('graceful-fs')
+var path = require('path')
+
+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')
+
+// Install from a tarball that thinks it is underscore@1.5.1
+// (but is actually a fork)
+var forkPath = path.resolve(
+ __dirname, '..', 'fixtures', 'forked-underscore-1.5.1.tgz'
+)
+var pkg = path.resolve(__dirname, 'cache-shasum-fork')
+var cache = path.join(pkg, 'cache')
+var server
+
+test('setup', function (t) {
+ setup()
+ t.comment('test for https://github.com/npm/npm/issues/3265')
+ mr({ port: common.port }, function (er, s) {
+ server = s
+ t.end()
+ })
+})
+
+test('npm cache - install from fork', function (t) {
+ setup()
+ common.npm(
+ [
+ '--loglevel', 'silent',
+ '--registry', common.registry,
+ 'install', forkPath
+ ],
+ {
+ cwd: pkg,
+ env: { npm_config_cache: cache }
+ },
+ function (err, code, stdout, stderr) {
+ t.ifErr(err, 'install finished without error')
+ t.notOk(stderr, 'Should not get data on stderr: ' + stderr)
+ t.equal(code, 0, 'install finished successfully')
+
+ t.equal(stdout, 'underscore@1.5.1 node_modules/underscore\n')
+ var index = fs.readFileSync(
+ path.join(pkg, 'node_modules', 'underscore', 'index.js'),
+ 'utf8'
+ )
+ t.equal(index, 'console.log("This is the fork");\n\n')
+ t.end()
+ }
+ )
+})
+
+// Now install the real 1.5.1.
+test('npm cache - install from origin', function (t) {
+ setup()
+ common.npm(
+ [
+ '--loglevel', 'silent',
+ '--registry', common.registry,
+ 'install', 'underscore'
+ ],
+ {
+ cwd: pkg,
+ env: { npm_config_cache: cache }
+ },
+ function (err, code, stdout, stderr) {
+ t.ifErr(err, 'install finished without error')
+ t.equal(code, 0, 'install finished successfully')
+ t.notOk(stderr, 'Should not get data on stderr: ' + stderr)
+ t.equal(stdout, 'underscore@1.5.1 node_modules/underscore\n')
+ var index = fs.readFileSync(
+ path.join(pkg, 'node_modules', 'underscore', 'index.js'),
+ 'utf8'
+ )
+ t.equal(index, 'module.exports = require(\'./underscore\');\n')
+ t.end()
+ }
+ )
+})
+
+test('cleanup', function (t) {
+ server.close()
+ cleanup()
+ t.end()
+})
+
+function cleanup () {
+ process.chdir(osenv.tmpdir())
+ rimraf.sync(pkg)
+}
+
+function setup () {
+ mkdirp.sync(cache)
+ mkdirp.sync(path.join(pkg, 'node_modules'))
+ process.chdir(pkg)
+}