public void ViewModelFieldToStringReturnsEmptyStringWhenValueIsNullTest()
        {
            var instance = new ModelFixture <string>();

            Assert.IsTrue(instance.Value is null, "Value should be null.");
            Assert.IsTrue(instance.ToString() == string.Empty, "ToString() should return empty.");
        }
        public void ViewModelFieldToStringTest()
        {
            var expectedValue = "expected value";

            var instance = new ModelFixture <string>(expectedValue);

            Assert.IsTrue(expectedValue.Equals(instance.Value), "Value was wrong.");
            Assert.IsTrue(expectedValue.Equals(instance.ToString()), "ToString() was wrong.");
        }