public void ModelIsNull()
        {
            // Arrange
            var validator = new PrefixNumberValidator(null, codeService);

            // Act
            validator.Validate(controller.ModelState);

            // Assert
            controller.ModelState.IsValid.Should().BeTrue();
        }
        public void ModelSetAndLanguageDoesNotExist()
        {
            // Arrange
            codeServiceMockSetup.Setup(c => c.GetDialCode(It.IsAny <string>())).Returns((VmDialCode)null);
            var validator = new PrefixNumberValidator("number", codeService);

            // Act
            validator.Validate(controller.ModelState);

            // Assert
            controller.ModelState.IsValid.Should().BeFalse();
        }
        public void ModelSetAndLanguageExists()
        {
            // Arrange
            codeServiceMockSetup.Setup(c => c.GetDialCode(It.IsAny <string>())).Returns(new VmDialCode()
            {
                Id = Guid.NewGuid()
            });
            var validator = new PrefixNumberValidator("number", codeService);

            // Act
            validator.Validate(controller.ModelState);

            // Assert
            controller.ModelState.IsValid.Should().BeTrue();
        }