chore: better tests exports (#128)

On-behalf-of: @SAP a.shcherbatiuk@sap.com

Signed-off-by: Artem Shcherbatiuk <vertex451@gmail.com>
Co-authored-by: Leidy Patricia Garzón Rodriguez <guitarlady86@gmail.com>

Author: vertex451

gateway/resolver/export_test.go

@@ -0,0 +1,13 @@
+package resolver
+
+func (r *Service) GetOriginalGroupName(key string) string {
+	return r.getOriginalGroupName(key)
+}
+
+func (r *Service) GetGroupName(key string) string {
+	return r.groupNames[key]
+}
+
+func (r *Service) SetGroupNames(names map[string]string) {
+	r.groupNames = names
+}

gateway/resolver/resolver_private_fields_test.go

@@ -484,3 +484,54 @@ func TestDeleteItem(t *testing.T) {
 		})
 	}
 }
+
+func TestSanitizeGroupName(t *testing.T) {
+	r := &resolver.Service{}
+	r.SetGroupNames(make(map[string]string))
+
+	tests := []struct {
+		name     string
+		input    string
+		expected string
+	}{
+		{"empty_string", "", "core"},
+		{"valid_group_name", "validName", "validName"},
+		{"hyphen_to_underscore", "group-name", "group_name"},
+		{"special_char_to_underscore", "group@name", "group_name"},
+		{"invalid_start_with_prepend", "!invalidStart", "_invalidStart"},
+		{"leading_underscore", "_leadingUnderscore", "_leadingUnderscore"},
+		{"start_with_number", "123startWithNumber", "_123startWithNumber"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := r.SanitizeGroupName(tt.input)
+			assert.Equal(t, tt.expected, result)
+			assert.Equal(t, tt.input, r.GetGroupName(result), "The original group name should be stored correctly")
+		})
+	}
+}
+
+func TestGetOriginalGroupName(t *testing.T) {
+	r := &resolver.Service{}
+	r.SetGroupNames(map[string]string{
+		"group1": "originalGroup1",
+		"group2": "originalGroup2",
+	})
+
+	tests := []struct {
+		name     string
+		input    string
+		expected string
+	}{
+		{"existing_group", "group1", "originalGroup1"},
+		{"non_existing_group", "group3", "group3"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := r.GetOriginalGroupName(tt.input)
+			assert.Equal(t, tt.expected, result)
+		})
+	}
+}