Add tests for pkg util

Author: jvassev

config-reloader/util/util.go

@@ -24,10 +24,16 @@ func Trim(s string) string {
 }
 
 func MakeFluentdSafeName(s string) string {
-	filter := func(r rune) bool {
-		return !unicode.IsLetter(r) && !unicode.IsDigit(r) && r != '-' && r != '_'
+	buf := &bytes.Buffer{}
+	for _, r := range s {
+		if !unicode.IsLetter(r) && !unicode.IsDigit(r) && r != '-' && r != '_' {
+			buf.WriteRune('-')
+		} else {
+			buf.WriteRune(r)
+		}
 	}
-	return strings.TrimFunc(s, filter)
+
+	return buf.String()
 }
 
 func ToRubyMapLiteral(labels map[string]string) string {

config-reloader/util/util_test.go

@@ -0,0 +1,43 @@
+// Copyright © 2018 VMware, Inc. All Rights Reserved.
+// SPDX-License-Identifier: BSD-2-Clause
+
+package util
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestMakeFluentdSafeName(t *testing.T) {
+	assert.Equal(t, "a", MakeFluentdSafeName("a"))
+	assert.Equal(t, "123", MakeFluentdSafeName("123"))
+	assert.Equal(t, "", MakeFluentdSafeName(""))
+	assert.Equal(t, "a-a", MakeFluentdSafeName("a.a"))
+	assert.Equal(t, "a-a", MakeFluentdSafeName("a\na"))
+	assert.Equal(t, "---", MakeFluentdSafeName("   "))
+}
+
+func TestToRubyMapLiteral(t *testing.T) {
+	assert.Equal(t, "{}", ToRubyMapLiteral(map[string]string{}))
+	assert.Equal(t, "{'a'=>'1'}", ToRubyMapLiteral(map[string]string{
+		"a": "1",
+	}))
+	assert.Equal(t, "{'a'=>'1','z'=>'2'}", ToRubyMapLiteral(map[string]string{
+		"a": "1",
+		"z": "2",
+	}))
+}
+
+func TestTrim(t *testing.T) {
+	assert.Equal(t, "a", Trim("a"))
+	assert.Equal(t, "a", Trim("  a"))
+	assert.Equal(t, "a", Trim("a  \t "))
+	assert.Equal(t, "a", Trim(" \t a   "))
+}
+
+func TestTrimTrailingComment(t *testing.T) {
+	assert.Equal(t, "a", TrimTrailingComment("a #12451345"))
+	assert.Equal(t, "a", TrimTrailingComment("a"))
+	assert.Equal(t, "a", TrimTrailingComment("a#########"))
+}