public void Validate_ValidCommand_ShouldBeTrue()
        {
            var command = new UpdateConversationNameCommand
            {
                Name = new string('a', 200),
                Id   = validConversationId1
            };

            var validator = new UpdateConversationNameCommandValidator();

            var result = validator.Validate(command);

            result.IsValid.ShouldBe(true);
        }
        public void Validate_NameIsGreaterThan200_ShouldBeFalse()
        {
            var command = new UpdateConversationNameCommand
            {
                Name = new string('a', 201),
                Id   = validConversationId1
            };

            var validator = new UpdateConversationNameCommandValidator();

            var result = validator.Validate(command);

            result.IsValid.ShouldBe(false);
        }