update packages to latest version

node_modules/npm/test/tap/cache-add-unpublished.js

@@ -0,0 +1,34 @@
+var common = require("../common-tap.js")
+var test = require("tap").test
+var mr = require("npm-registry-mock")
+
+test("cache add", function (t) {
+  setup(function (er, s) {
+    if (er) {
+      throw er
+    }
+    common.npm([
+      "cache",
+      "add",
+      "superfoo",
+      "--registry=http://localhost:1337/"
+    ], {}, function (er, c, so, se) {
+      if (er) throw er
+      t.ok(c, "got non-zero exit code")
+      t.equal(so, "", "nothing printed to stdout")
+      t.similar(se, /404 Not Found: superfoo/, "got expected error")
+      s.close()
+      t.end()
+    })
+  })
+})
+
+function setup (cb) {
+  var s = require("http").createServer(function (req, res) {
+    res.statusCode = 404
+    res.end("{\"error\":\"not_found\"}\n")
+  })
+  s.listen(1337, function () {
+    cb(null, s)
+  })
+}