public IGen <Test> ItRendersOneLine() =>
from value in Gen.Choose(DomainGen.Any(), DomainGen.AnyList())
select Property.ForThese(() =>
{
var rendering = ExampleRenderer.Render(new object[] { value });
rendering.Should().ContainSingle();
});
public NebulaCheck.IGen <Test> ItDoesNotConsumeRandomness() =>
from value in DomainGen.Any()
from seed in DomainGen.Seed()
from size in DomainGen.Size()
select Property.ForThese(() =>
{
var gen = GalaxyCheck.Gen.Constant(value);
var sample = gen.Advanced.SampleOneWithMetrics(seed: seed, size: size);
sample.RandomnessConsumption.Should().Be(0);
});
public NebulaCheck.IGen <Test> ItCanGenerateAnEmptyRecord() =>
from value in DomainGen.Any()
from seed in DomainGen.Seed()
from size in DomainGen.Size()
select Property.ForThese(() =>
{
var gen = GalaxyCheck.Gen.Create <EmptyRecord>();
var instance = gen.SampleOne(seed: seed, size: size);
instance.Should().NotBeNull();
});
public NebulaCheck.IGen <Test> ItIsPure() =>
from input in DomainGen.Any().Two()
from returnGen in DomainGen.Gen()
from seed in DomainGen.Seed()
from size in DomainGen.Size()
select Property.ForThese(() =>
{
var gen = returnGen.FunctionOf <object, object, object>();
var func = gen.SampleOne(seed: seed, size: size);
func(input.Item1, input.Item2).Should().Be(func(input.Item1, input.Item2));
});
public NebulaCheck.IGen <Test> IfTheClassHasARecursiveProperty_ItErrors() =>
from value in DomainGen.Any()
from seed in DomainGen.Seed()
from size in DomainGen.Size()
select Property.ForThese(() =>
{
var gen = GalaxyCheck.Gen.Create <ClassWithRecursiveProperty>();
Action action = () => gen.SampleOne(seed: seed, size: size);
action.Should()
.Throw <GalaxyCheck.Exceptions.GenErrorException>()
.WithMessage("Error while running generator ReflectedGen: detected circular reference on type '*ClassWithRecursiveProperty' at path '$.Property'");
});
public NebulaCheck.IGen <Test> ItCanOverrideANestedExternalInitProperty() =>
from value in DomainGen.Any()
from seed in DomainGen.Seed()
from size in DomainGen.Size()
select Property.ForThese(() =>
{
var gen = GalaxyCheck.Gen
.Create <RecordWithOneNestedProperty>()
.OverrideMember(x => x.Property.Property, GalaxyCheck.Gen.Constant(value));
var instance = gen.SampleOne(seed: seed, size: size);
instance.Should().NotBeNull();
instance.Property.Property.Should().Be(value);
});
public NebulaCheck.IGen <Test> ItProducesTheGivenValue() =>
from value in DomainGen.Any()
from seed in DomainGen.Seed()
from size in DomainGen.Size()
select Property.ForThese(() =>
{
var gen = GalaxyCheck.Gen.Constant(value);
var traversal = gen.Advanced
.SampleOneExampleSpace(seed: seed, size: size)
.TraverseExamples()
.Take(100)
.ToList();
traversal
.Should().ContainSingle()
.Subject.Should().BeEquivalentTo(new Example <object>(ExampleId.Empty, value, 0));
});
public NebulaCheck.IGen <Test> ItCanGenerateAnObjectWithTwoProperties() =>
from value1 in DomainGen.Any()
from value2 in DomainGen.Any()
from seed in DomainGen.Seed()
from size in DomainGen.Size()
select Property.ForThese(() =>
{
var gen = GalaxyCheck.Gen
.Factory()
.RegisterType(GalaxyCheck.Gen.Int32().Where(x => x != 0))
.Create <ClassWithTwoProperties>();
var instance = gen.SampleOne(seed: seed, size: size);
instance.Should().NotBeNull();
instance.Property1.Should().NotBe(0);
instance.Property2.Should().NotBe(0);
});
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.*");
});
public static IGen <WeightedElement <object> > WeightedElement() => from weight in Gen.Int32().Between(0, 100) from value in DomainGen.Any() select new WeightedElement <object>(weight, value);