test: use os.tmpdir() (#12)

* test: use os.tmpdir()

* fix: use hat() for unique names

Author: richardschneider

package.json

@@ -39,6 +39,7 @@
     "0x": "^2.4.2",
     "async": "^2.1.5",
     "benchmark-async": "^2.2.0",
+    "hat": "0.0.3",
     "ipfs": "^0.22.1",
     "ipfsd-ctl": "^0.20.0",
     "opn": "^4.0.2",

src/prepare/js-core/create-repo.js

@@ -3,9 +3,12 @@
 const IPFSRepo = require('ipfs-repo')
 const Store = require('fs-pull-blob-store')
 const clean = require('./destroy-repo')
+const os = require('os')
+const path = require('path')
+const hat = require('hat')
 
 module.exports = function createTempRepo (repoPath) {
-  repoPath = repoPath || '/tmp/ipfs-test-' + Math.random().toString().substring(2, 8)
+  repoPath = repoPath || path.join(os.tmpdir(), 'ipfs-test-' + hat())
 
   const repo = new IPFSRepo(repoPath, {
     bits: 1024,