diff --git a/_site/acceptance/tools/tools.go b/_site/acceptance/tools/tools.go
new file mode 100644
index 0000000..4771ebb
--- /dev/null
+++ b/_site/acceptance/tools/tools.go
@@ -0,0 +1,50 @@
+// +build acceptance
+package tools
+
+import (
+	"crypto/rand"
+	"errors"
+	"time"
+)
+
+// ErrTimeout is returned if WaitFor takes longer than 300 second to happen.
+var ErrTimeout = errors.New("Timed out")
+
+// WaitFor polls a predicate function once per second to wait for a certain state to arrive.
+func WaitFor(predicate func() (bool, error)) error {
+	for i := 0; i < 300; i++ {
+		time.Sleep(1 * time.Second)
+
+		satisfied, err := predicate()
+		if err != nil {
+			return err
+		}
+		if satisfied {
+			return nil
+		}
+	}
+	return ErrTimeout
+}
+
+// MakeNewPassword generates a new string that's guaranteed to be different than the given one.
+func MakeNewPassword(oldPass string) string {
+	randomPassword := RandomString("", 16)
+	for randomPassword == oldPass {
+		randomPassword = RandomString("", 16)
+	}
+	return randomPassword
+}
+
+// RandomString generates a string of given length, but random content.
+// All content will be within the ASCII graphic character set.
+// (Implementation from Even Shaw's contribution on
+// http://stackoverflow.com/questions/12771930/what-is-the-fastest-way-to-generate-a-long-random-string-in-go).
+func RandomString(prefix string, n int) string {
+	const alphanum = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
+	var bytes = make([]byte, n)
+	rand.Read(bytes)
+	for i, b := range bytes {
+		bytes[i] = alphanum[b%byte(len(alphanum))]
+	}
+	return prefix + string(bytes)
+}