test: use dedicated cache for mocked packages

test/tap/noargs-install-config-save.js

@@ -19,6 +19,7 @@ pkg += path.sep + "noargs-install-config-save"
 function writePackageJson() {
   rimraf.sync(pkg)
   mkdirp.sync(pkg)
+  mkdirp.sync(pkg + "/cache")
 
   fs.writeFileSync(pkg + "/package.json", JSON.stringify({
     "author": "Rocko Artischocko",
@@ -34,6 +35,7 @@ function createChild (args) {
   var env = {
     npm_config_save: true,
     npm_config_registry: common.registry,
+    npm_config_cache: pkg + "/cache",
     HOME: process.env.HOME,
     Path: process.env.PATH,
     PATH: process.env.PATH
@@ -78,3 +80,8 @@ test("updates the package.json (adds dependencies) with an argument", function (
     })
   })
 })
+
+test("cleanup", function (t) {
+  rimraf.sync(pkg + "/cache")
+  t.end()
+})

test/tap/outdated-include-devdependencies.js

@@ -1,17 +1,18 @@
 var common = require("../common-tap.js")
 var test = require("tap").test
 var npm = require("../../")
-
+var mkdirp = require("mkdirp")
+var rimraf = require("rimraf")
 var mr = require("npm-registry-mock")
 
 // config
 var pkg = __dirname + '/outdated-include-devdependencies'
-
+mkdirp.sync(pkg + "/cache")
 
 test("includes devDependencies in outdated", function (t) {
   process.chdir(pkg)
   mr(common.port, function (s) {
-    npm.load({registry: common.registry}, function () {
+    npm.load({cache: pkg + "/cache", registry: common.registry}, function () {
       npm.outdated(function (er, d) {
         t.equal("1.5.1", d[0][3])
         s.close()
@@ -20,3 +21,8 @@ test("includes devDependencies in outdated", function (t) {
     })
   })
 })
+
+test("cleanup", function (t) {
+  rimraf.sync(pkg + "/cache")
+  t.end()
+})

test/tap/outdated.js

@@ -9,11 +9,12 @@ var mr = require("npm-registry-mock")
 var pkg = __dirname + '/outdated'
 
 test("it should not throw", function (t) {
-  rimraf.sync(pkg + "/node_modules")
+  cleanup()
   process.chdir(pkg)
 
   mr(common.port, function (s) {
     npm.load({
+      cache: pkg + "/cache",
       registry: common.registry }
     , function () {
       npm.install(".", function (err) {
@@ -31,3 +32,8 @@ test("cleanup", function (t) {
   cleanup()
   t.end()
 })
+
+function cleanup () {
+  rimraf.sync(pkg + "/node_modules")
+  rimraf.sync(pkg + "/cache")
+}