From 68e4734caf5256ad19f9fabf8d7c5b924849dead Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <mitchell.hashimoto@gmail.com>
Date: Sat, 13 Jun 2015 18:55:37 -0400
Subject: [PATCH] builder/null: pass unit tests

---
 builder/null/config_test.go    |  7 ++++-
 helper/communicator/testing.go | 47 ++++++++++++++++++++++++++++++++++
 2 files changed, 53 insertions(+), 1 deletion(-)
 create mode 100644 helper/communicator/testing.go

diff --git a/builder/null/config_test.go b/builder/null/config_test.go
index 12123378d..a3b96421e 100644
--- a/builder/null/config_test.go
+++ b/builder/null/config_test.go
@@ -1,7 +1,10 @@
 package null
 
 import (
+	"os"
 	"testing"
+
+	"github.com/mitchellh/packer/helper/communicator"
 )
 
 func testConfig() map[string]interface{} {
@@ -97,7 +100,9 @@ func TestConfigPrepare_sshCredential(t *testing.T) {
 	testConfigOk(t, warns, errs)
 
 	// only ssh_private_key_file
-	raw["ssh_private_key_file"] = "good"
+	testFile := communicator.TestPEM(t)
+	defer os.Remove(testFile)
+	raw["ssh_private_key_file"] = testFile
 	delete(raw, "ssh_password")
 	_, warns, errs = NewConfig(raw)
 	testConfigOk(t, warns, errs)
diff --git a/helper/communicator/testing.go b/helper/communicator/testing.go
new file mode 100644
index 000000000..1c89f15e3
--- /dev/null
+++ b/helper/communicator/testing.go
@@ -0,0 +1,47 @@
+package communicator
+
+import (
+	"io/ioutil"
+	"testing"
+)
+
+func TestPEM(t *testing.T) string {
+	tf, err := ioutil.TempFile("", "packer")
+	if err != nil {
+		t.Fatalf("err: %s", err)
+	}
+	tf.Write([]byte(TestPEMContents))
+	tf.Close()
+
+	return tf.Name()
+}
+
+const TestPEMContents = `
+-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----
+`