public bool TryBuild(out ClearableValue <T> result)
{
T value = Value;
string state = State;
if (string.IsNullOrEmpty(state) || string.Equals(state, Constants.Clearable_NoActionState, StringComparison.OrdinalIgnoreCase))
{
result = ClearableValue <T> .NoAction();
return(true);
}
if (string.Equals(state, Constants.Clearable_ClearState, StringComparison.OrdinalIgnoreCase))
{
result = ClearableValue <T> .Clear();
return(true);
}
if (string.Equals(state, Constants.Clearable_SetState, StringComparison.OrdinalIgnoreCase))
{
result = ClearableValue <T> .Set(value);
return(true);
}
result = default(ClearableValue <T>);
return(false);
}
public void GenericNoAction_ShouldBeNoAction()
{
// arrange
var sut = ClearableValue.NoAction(Fixture.Create <int>());
// act
// assert
sut.Should().BeNoActionVariant(because: "{0} is created using generic NoAction<T>() method and should be treated as 'noAction'", sut);
}
public void DomesticNoAction_ShouldBeNoAction()
{
// arrange
var sut = ClearableValue <int> .NoAction();
// act
// assert
sut.Should().BeNoActionVariant(because: "{0} is created using domestic static NoAction() method and should be treated as 'noAction'", sut);
}
public void NoAction_ShouldNotCallMapper()
{
// arrange
var sut = ClearableValue <int> .NoAction();
// act
Action map = () => sut.Map <int>(_ => throw new InvalidOperationException());
// assert
map.Should().NotThrow(because: "mapping 'noAction' should not call mapper function");
}
public void NoAction_ShouldMapToNoAction()
{
// arrange
var sut = ClearableValue <int> .NoAction();
// act
var result = sut.Map(e => e.ToString());
// assert
result.Should().BeNoActionVariant();
}
public void NoActionAndClear_ShouldNotBeEqual()
{
// arrange
var noAction = ClearableValue <int> .NoAction();
var clear = ClearableValue <int> .Clear();
// act
// assert
noAction.Equals(clear).Should().BeFalse();
clear.Equals(noAction).Should().BeFalse();
}
public void NoActionAndSetOfDefaultValue_ShouldNotBeEqual()
{
// arrange
var noAction = ClearableValue <int> .NoAction();
var set = ClearableValue <int> .Set(default(int));
// act
// assert
noAction.Equals(set).Should().BeFalse();
set.Equals(noAction).Should().BeFalse();
}
public void NoActionAndDefaultClearableValue_ShouldBeEqual()
{
// arrange
var noAction = ClearableValue <int> .NoAction();
var @default = default(ClearableValue <int>);
// act
// assert
noAction.Equals(@default).Should().BeTrue();
@default.Equals(noAction).Should().BeTrue();
}
private static IEnumerable <ClearableValue <string> > GetSerializeTestData()
{
yield return(ClearableValue <string> .NoAction());
yield return(ClearableValue <string> .Clear());
yield return(ClearableValue <string> .Set(null));
yield return(ClearableValue <string> .Set(string.Empty));
yield return(ClearableValue <string> .Set(System.Guid.NewGuid().ToString()));
}
public void NoAction_ShouldNotCallSetOrClearFunc()
{
// arrange
var sut = ClearableValue <int> .NoAction();
// act
Action match = () => sut.Match(
set: _ => throw new InvalidOperationException(),
clear: () => throw new InvalidOperationException(),
noAction: () => State.NoAction);
// assert
match.Should().NotThrow(because: "matching 'noAction' should not call neither 'set' nor 'clear' function");
}
public void NoAction_ShouldMatch()
{
// arrange
var sut = ClearableValue <int> .NoAction();
// act
var result = sut.Match(
set: _ => State.Set,
clear: () => State.Clear,
noAction: () => State.NoAction);
// assert
result.Should().Be(State.NoAction);
}
public static ClearableValue <T> SetIfNotNull <T>(this T?value) where T : struct =>
value.HasValue
? ClearableValue.Set(value.Value)
: ClearableValue <T> .NoAction();