From 9124a47ee92b33b2e2aac90d87ccf36439e93947 Mon Sep 17 00:00:00 2001
From: Manuel de Brito Fontes <aledbf@gmail.com>
Date: Mon, 6 Nov 2017 20:48:34 -0300
Subject: [PATCH] Add nginx helper tests

---
 pkg/ingress/controller/process/nginx.go      |  1 +
 pkg/ingress/controller/process/nginx_test.go | 44 ++++++++++++++++++++
 2 files changed, 45 insertions(+)
 create mode 100644 pkg/ingress/controller/process/nginx_test.go

diff --git a/pkg/ingress/controller/process/nginx.go b/pkg/ingress/controller/process/nginx.go
index 326b7ca48..4a925a3e1 100644
--- a/pkg/ingress/controller/process/nginx.go
+++ b/pkg/ingress/controller/process/nginx.go
@@ -29,6 +29,7 @@ import (
 	"github.com/ncabatoff/process-exporter/proc"
 )
 
+// IsRespawnIfRequired checks if error type is exec.ExitError or not
 func IsRespawnIfRequired(err error) bool {
 	exitError, ok := err.(*exec.ExitError)
 	if !ok {
diff --git a/pkg/ingress/controller/process/nginx_test.go b/pkg/ingress/controller/process/nginx_test.go
new file mode 100644
index 000000000..7174e4d8e
--- /dev/null
+++ b/pkg/ingress/controller/process/nginx_test.go
@@ -0,0 +1,44 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package process
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"testing"
+)
+
+func TestIsRespawnIfRequired(t *testing.T) {
+	cases := []struct {
+		err   error
+		isReq bool
+	}{
+		{nil, false},
+		{fmt.Errorf("dummy"), false},
+		{&exec.ExitError{
+			ProcessState: &os.ProcessState{},
+		}, true},
+	}
+
+	for _, tc := range cases {
+		isReq := IsRespawnIfRequired(tc.err)
+		if tc.isReq != isReq {
+			t.Error("expected an error but none returned")
+		}
+	}
+}