--- /dev/null
+var common = require("../common-tap.js")
+var test = require("tap").test
+var rimraf = require("rimraf")
+var prefix = __filename.replace(/\.js$/, "")
+var rcfile = __filename.replace(/\.js$/, ".npmrc")
+var fs = require("fs")
+var conf = "prefix = " + prefix + "\n"
+
+test("setup", function (t) {
+ rimraf.sync(prefix)
+ fs.writeFileSync(rcfile, conf)
+ t.pass("ready")
+ t.end()
+})
+
+test("run command", function (t) {
+ var args = ["prefix", "-g", "--userconfig=" + rcfile]
+ common.npm(args, {env: {}}, function (er, code, so) {
+ if (er) throw er
+ t.notOk(code, "npm prefix exited with code 0")
+ t.equal(so.trim(), prefix)
+ t.end()
+ })
+})
+
+test("made dir", function (t) {
+ t.ok(fs.statSync(prefix).isDirectory())
+ t.end()
+})
+
+test("cleanup", function (t) {
+ rimraf.sync(prefix)
+ rimraf.sync(rcfile)
+ t.pass("clean")
+ t.end()
+})