public async Task HandlingDuplicateAreaTagCommand_ShouldAddTagToExistingProject()
{
// Act
var result = await _dut.Handle(_command, default);
// Assert
Assert.AreEqual(0, result.Errors.Count);
var duplicatedTag = _project.Tags.SingleOrDefault(t => t.TagNo == _command.GetTagNo());
Assert.IsNotNull(duplicatedTag);
}
public void Validate_ShouldFail_WhenTargetTagAlreadyExists()
{
_tagValidatorMock.Setup(r => r.ExistsAsync(_command.GetTagNo(), TagId, default)).Returns(Task.FromResult(true));
var result = _dut.Validate(_command);
Assert.IsFalse(result.IsValid);
Assert.AreEqual(1, result.Errors.Count);
Assert.IsTrue(result.Errors[0].ErrorMessage.StartsWith("Tag already exists in scope for project!"));
}
