IsInCapsuleGroup binary search is case-sensitive broken (#181)

Co-authored-by: Maksim Fedotov <m_fedotov@wargaming.net>

pkg/utils/user_group.go

@@ -18,7 +18,6 @@ package utils
 
 import (
 	"sort"
-	"strings"
 )
 
 type UserGroupList []string
@@ -28,7 +27,7 @@ func (u UserGroupList) Len() int {
 }
 
 func (u UserGroupList) Less(i, j int) bool {
-	return strings.ToLower(u[i]) < strings.ToLower(u[j])
+	return u[i] < u[j]
 }
 
 func (u UserGroupList) Swap(i, j int) {

pkg/utils/user_group_test.go

@@ -0,0 +1,23 @@
+package utils
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestIsInCapsuleGroup(t *testing.T) {
+	groups := []string{
+		"DPS-QQ-DeparEE-Upload_RW",
+		"vsphere - glonqqqq-devopsq",
+		"OSAAA-WOO",
+		"crownuser-qq4",
+		"kubernetes-abilitytologin",
+		"waaazzz-prod-user",
+		"Zaxxxq_Global_Team_Leader_Automation",
+	}
+
+	capsuleGroup := "kubernetes-abilitytologin"
+
+	assert.True(t, UserGroupList(groups).IsInCapsuleGroup(capsuleGroup), nil)
+}