bool b = MyVo_validate_with_camelCase_method_name.TryFrom(-1, out var vo);
vo.Should().Be(default);
b.Should().BeFalse();
var voe = MyVo_validate_with_camelCase_method_name.TryFrom(-1);
voe.IsSuccess.Should().BeFalse();
}
{
Action pascalCase1 = () => MyVo_validate_with_PascalCase_method_name.From(-1);
pascalCase1.Should().ThrowExactly<ValueObjectValidationException>().WithMessage("must be greater than zero");
bool b = MyVo_validate_with_PascalCase_method_name.TryFrom(-1, out var vo);
vo.Should().Be(default);
b.Should().BeFalse();
var voe = MyVo_validate_with_PascalCase_method_name.TryFrom(-1);
voe.IsSuccess.Should().BeFalse();
}
}
[Fact]
public void Validation_can_have_different_synonyms_for_input()
{
Action vo = () => MyVo_validate_with_synonymous_input_parameter.From(-1);
vo.Should().ThrowExactly<ValueObjectValidationException>().WithMessage("must be greater than zero");
}
[Fact]
public void Validation_can_throw_a_different_exception()
{
Action vo = () => MyVo_throws_custom_exception.From(-1);
vo.Should().ThrowExactly<InvalidAmountException>().WithMessage("must be greater than zero");
}
[SkippableIfBuiltWithNoValidationFlagFact]
public void TryFrom_that_fails_for_a_struct_has_an_uninitialized_instance()
{
VoStruct.TryFrom(-1, out var vo).Should().BeFalse();
vo.IsInitialized().Should().BeFalse();
}
[SkippableIfNotBuiltWithNoValidationFlagFact]
public void TryFrom_that_fails_for_a_struct_has_an_default_instance()
{
VoStruct.TryFrom(-1, out var vo).Should().BeFalse();
vo.IsInitialized().Should().BeTrue();
}
[Fact]
public void Validation()
{
Func<Age> act = () => Age.From(12);
act.Should().ThrowExactly<ValueObjectValidationException>();
{
var r = Age.TryFrom(12);
r.IsSuccess.Should().BeFalse();
r.Error.ErrorMessage.Should().Be("Must be 18 or over");
}
{
bool b = Age.TryFrom(12, out var age);
b.Should().BeFalse();
age.Should().BeNull();
}
Func<EightiesDate> act2 = () => EightiesDate.From(new DateTime(1990, 1, 1));
act2.Should().ThrowExactly<ValueObjectValidationException>();
Func<EightiesDate> act3 = () => EightiesDate.From(new DateTime(1985, 6, 10));
act3.Should().NotThrow();
string[] validDaves = new[] { "dave grohl", "david beckham", "david bowie" };
foreach (var name in validDaves)
{
Func<Dave> act4 = () => Dave.From(name);
act4.Should().NotThrow();
{
var r = Dave.TryFrom(name);
r.IsSuccess.Should().BeTrue();
}
{
bool b = Dave.TryFrom(name, out var r);
b.Should().BeTrue();
r.Value.Should().Be(name);
}
}
string[] invalidDaves = new[] { "dafid jones", "fred flintstone", "davidoff cool water" };
foreach (var name in invalidDaves)
{
Func<Dave> act5 = () => Dave.From(name);
act5.Should().ThrowExactly<ValueObjectValidationException>();
{
var r = Dave.TryFrom(name);
r.IsSuccess.Should().BeFalse();
r.Error.ErrorMessage.Should().Be("must be a dave or david");
}
{
bool b = Dave.TryFrom(name, out var r);
b.Should().BeFalse();
r.Should().BeNull();
}
}
Func<MinimalValidation> act6 = () => MinimalValidation.From(1);
act6.Should().ThrowExactly<ValueObjectValidationException>().WithMessage("[none provided]");
}
[Fact]
public void No_validation()
{
Func<Anything> act = () => Anything.From(int.MaxValue);
act.Should().NotThrow();
bool b = Anything.TryFrom(-1, out var vo);
vo.Value.Should().Be(-1);
b.Should().BeTrue();
