docs: reorder & testing

backend/internal/geo/geo_test.go

@@ -8,22 +8,6 @@ import (
 	"go.uber.org/zap"
 )
 
-func TestLanguageForCountry(t *testing.T) {
-	cases := map[string]string{
-		"DE": "de",
-		"de": "de", // case-insensitive input
-		"RU": "ru",
-		"BR": "pt",
-		"":   "",
-		"ZZ": "",
-	}
-	for input, want := range cases {
-		if got := languageForCountry(input); got != want {
-			t.Errorf("languageForCountry(%q) = %q, want %q", input, got, want)
-		}
-	}
-}
-
 func TestLookupCountryNilSafety(t *testing.T) {
 	var s *Service
 	if got := s.LookupCountry("8.8.8.8"); got != "" {
@@ -31,13 +15,6 @@ func TestLookupCountryNilSafety(t *testing.T) {
 	}
 }
 
-func TestLanguageForIPNilSafety(t *testing.T) {
-	var s *Service
-	if got := s.LanguageForIP("8.8.8.8"); got != "" {
-		t.Errorf("nil Service LanguageForIP = %q, want empty", got)
-	}
-}
-
 func TestSetLoggerNilSafety(t *testing.T) {
 	var s *Service
 	s.SetLogger(zap.NewNop())