Fix GetFirstCharacters for Unicode

Author: JakobDev

modules/util/string.go

@@ -98,8 +98,9 @@ func UnsafeStringToBytes(s string) []byte {
 
 // GetFirstCharacters returns the first n characters of a string
 func GetFirstCharacters(s string, n int) string {
+	r := []rune(s)
 	if len(s) <= n {
-		return s
+		return string(r[:n])
 	}
 	return s[:n]
 }

modules/util/string_test.go

@@ -49,4 +49,5 @@ func TestToSnakeCase(t *testing.T) {
 func TestGetFirstCharacters(t *testing.T) {
 	assert.Equal(t, "Test123", GetFirstCharacters("Test123", 10))
 	assert.Equal(t, "Test", GetFirstCharacters("Test123", 4))
+	assert.Equal(t, "こん", GetFirstCharacters("こんにちは", 2))
 }