public IGen <Test> EncodeDecodeIsAnIsomorphism() =>
from seed in Gen.Int32()
from size in Gen.Int32().Between(0, 100)
from exampleSpacePath in Gen.Int32().ListOf()
select Property.ForThese(() =>
{
var replay0 = CreateReplay(seed, size, exampleSpacePath);
var replay1 = ReplayEncoding.Decode(ReplayEncoding.Encode(replay0));
replay1.GenParameters.Should().Be(replay0.GenParameters);
replay1.ExampleSpacePath.Should().BeEquivalentTo(replay0.ExampleSpacePath);
});
public void Examples(int seed, int size, IEnumerable <int> exampleSpacePath, string expectedEncoding)
{
var replay = CreateReplay(seed, size, exampleSpacePath);
// TODO: Cross-platform consistent replay encoding
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
var encoded = ReplayEncoding.Encode(replay);
encoded.Should().Be(expectedEncoding);
}
}
public NebulaCheck.IGen <Test> IfTheReplayEncodesAGenError_ItThrows() =>
from func in Gen.Function <object, bool>(Gen.Boolean())
from replaySeed in Gen.Int32()
from replaySize in Gen.Int32().Between(0, 100)
from replayPath in Gen.Int32().ListOf()
select Property.ForThese(() =>
{
var property = GalaxyCheck.Gen.Advanced.Error <object>("", "").ForAll(func);
var replay = ReplayEncoding.Encode(CreateReplay(replaySeed, replaySize, replayPath));
Action test = () => property.Check(replay: replay);
test.Should()
.Throw <GalaxyCheck.Exceptions.GenErrorException>()
.WithMessage("Error replaying last example, given replay string was no longer valid.*");
});
public NebulaCheck.IGen <Test> IfTheReplayEncodesAnInvalidShrinkPath_ItThrows() =>
from func in Gen.Function(Gen.Boolean())
from replaySeed in Gen.Int32()
from replaySize in Gen.Int32().Between(0, 100)
from replayPath in Gen.Int32().ListOf().WithCountGreaterThanEqual(1)
select Property.ForThese(() =>
{
var property = GalaxyCheck.Property.Nullary(func);
var replay = ReplayEncoding.Encode(CreateReplay(replaySeed, replaySize, replayPath));
Action test = () => property.Check(replay: replay);
test.Should()
.Throw <GalaxyCheck.Exceptions.GenErrorException>()
.WithMessage("Error replaying last example, given replay string was no longer valid.*");
});
private static Counterexample <T> FromCounterexampleContext <T>(
CounterexampleContext <T> counterexampleContext)
{
var replay = new Replay(counterexampleContext.ReplayParameters, counterexampleContext.ReplayPath);
var replayEncoded = ReplayEncoding.Encode(replay);
return(new Counterexample <T>(
counterexampleContext.ExampleSpace.Current.Id,
counterexampleContext.ExampleSpace.Current.Value,
counterexampleContext.ExampleSpace.Current.Distance,
counterexampleContext.ReplayParameters,
counterexampleContext.ReplayPath,
replayEncoded,
counterexampleContext.Exception,
counterexampleContext.PresentationalValue));
}
public NebulaCheck.IGen <Test> IfTheReplayEncodesAPreconditionFailure_ItThrows() =>
from value in DomainGen.Any()
from replaySeed in Gen.Int32()
from replaySize in Gen.Int32().Between(0, 100)
from replayPath in Gen.Int32().ListOf()
select Property.ForThese(() =>
{
var property = GalaxyCheck.Gen.Constant(value).ForAll((_) =>
{
GalaxyCheck.Property.Precondition(false);
});
var replay = ReplayEncoding.Encode(CreateReplay(replaySeed, replaySize, replayPath));
Action test = () => property.Check(replay: replay);
test.Should()
.Throw <GalaxyCheck.Exceptions.GenErrorException>()
.WithMessage("Error replaying last example, given replay string was no longer valid.*");
});