Factor test-helper out of tests

Bonus:
  - Fix test in `startstop.js`

1 files changed, 32 insertions, 0 deletions

diff --git a/test/common-tap.js b/test/common-tap.js
index a13a0a7cd..c4f3f613f 100644
--- a/test/common-tap.js
+++ b/test/common-tap.js
@@ -1,2 +1,34 @@
+var spawn = require('child_process').spawn
+
 var port = exports.port = 1337
 exports.registry = "http://localhost:" + port
+
+exports.run = run
+function run (cmd, t, opts, cb) {
+  if (!opts)
+    opts = {}
+  if (!Array.isArray(cmd))
+    throw new Error("cmd must be an Array")
+  if (!t || !t.end)
+    throw new Error("node-tap instance is missing")
+
+  var c = ""
+    , e = ""
+    , node = process.execPath
+    , child = spawn(node, cmd, opts)
+
+  child.stderr.on("data", function (chunk) {
+    e += chunk
+  })
+
+  child.stdout.on("data", function (chunk) {
+    c += chunk
+  })
+
+  child.stdout.on("end", function () {
+    if (cb)
+      cb(t, c, e, { cmd: cmd, opts: opts })
+    else
+      t.end()
+  })
+}