simple validator test

commons/validator_test.go

+// SPDX-FileCopyrightText: © 2025 Paweł J. Wal <p@steamshard.net>
+//
+// SPDX-License-Identifier: AGPL-3.0-only
+
+package commons_test
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/suite"
+	"kita.gawa.moe/paweljw/vellum/commons"
+)
+
+type testForm struct {
+	Name string `validate:"required,min=3"`
+}
+
+type ValidatorTestSuite struct {
+	suite.Suite
+	sut *commons.Validator
+}
+
+func (s *ValidatorTestSuite) SetupTest() {
+	s.sut = commons.NewValidator()
+}
+
+func (s *ValidatorTestSuite) TestValidateWithValidData() {
+	form := testForm{
+		Name: "Test Name",
+	}
+
+	result := s.sut.Validate(form)
+
+	s.True(result)
+	s.Nil(s.sut.Error)
+}
+
+func (s *ValidatorTestSuite) TestValidateWithInvalidData() {
+	form := testForm{
+		Name: "Te", // Too short, minimum 3 characters
+	}
+
+	result := s.sut.Validate(form)
+
+	s.False(result)
+	s.NotNil(s.sut.Error)
+}
+
+func (s *ValidatorTestSuite) TestMessagesWithValidData() {
+	form := testForm{
+		Name: "Test Name",
+	}
+
+	_ = s.sut.Validate(form)
+
+	messages := s.sut.Messages("Name")
+
+	s.Equal("", messages)
+}
+
+func (s *ValidatorTestSuite) TestMessagesWithInvalidData() {
+	form := testForm{
+		Name: "Te", // Too short, minimum 3 characters
+	}
+
+	_ = s.sut.Validate(form)
+
+	messages := s.sut.Messages("Name")
+
+	s.Equal("Name must be at least 3 characters in length", messages)
+}
+
+func TestValidatorTestSuite(t *testing.T) {
+	suite.Run(t, new(ValidatorTestSuite))
+}