/// <summary>
/// Transforms the supplied builder into another.
/// </summary>
/// <param name="builder">The builder to transform.</param>
/// <returns>
/// A new <see cref="ISpecimenBuilder"/> created from <paramref name="builder"/>.
/// </returns>
/// <remarks>
/// <para>
/// Although a <see cref="NoSpecimenOutputGuard"/> throws if the decorated
/// <see cref="ISpecimenBuilder"/> returns a <see cref="NoSpecimen"/>, this
/// transformation permits NoSpecimen return values if the request is a
/// <see cref="SeededRequest"/> for the <see cref="TargetType"/>. This enables the
/// engine to retry the request with the unwrapped <see cref="Type"/> request.
/// </para>
/// </remarks>
public ISpecimenBuilder Transform(ISpecimenBuilder builder)
{
var allowedNoSpecimenFilter = new SeedRequestSpecification(this.targetType);
var throwSpec = new InverseRequestSpecification(allowedNoSpecimenFilter);
return(new NoSpecimenOutputGuard(builder, throwSpec));
}
public void IsSatisfiedByNullThrows()
{
// Fixture setup
var dummyType = typeof(object);
var sut = new SeedRequestSpecification(dummyType);
// Exercise system and verify outcome
Assert.Throws<ArgumentNullException>(() =>
sut.IsSatisfiedBy(null));
// Teardown
}
public void SutIsRequestSpecification()
{
// Fixture setup
var dummyType = typeof(object);
// Exercise system
var sut = new SeedRequestSpecification(dummyType);
// Verify outcome
Assert.IsAssignableFrom<IRequestSpecification>(sut);
// Teardown
}
public void TargetTypeIsCorrect()
{
// Fixture setup
var expectedType = typeof(DayOfWeek);
var sut = new SeedRequestSpecification(expectedType);
// Exercise system
Type result = sut.TargetType;
// Verify outcome
Assert.Equal(expectedType, result);
// Teardown
}
public void IsSatisfiedByReturnsCorrectResult(Type specType, Type seedRequestType, bool expectedResult)
{
// Fixture setup
var sut = new SeedRequestSpecification(specType);
var dummySeed = new object();
var seededRequest = new SeededRequest(seedRequestType, dummySeed);
// Exercise system
var result = sut.IsSatisfiedBy(seededRequest);
// Verify outcome
Assert.Equal(expectedResult, result);
// Teardown
}
public void IsSatisfiedByNonSeedReturnsCorrectResult()
{
// Fixture setup
var dummyType = typeof(object);
var sut = new SeedRequestSpecification(dummyType);
var nonSeedRequest = new object();
// Exercise system
var result = sut.IsSatisfiedBy(nonSeedRequest);
// Verify outcome
Assert.False(result);
// Teardown
}
/// <summary>
/// Transforms the supplied builder into another.
/// </summary>
/// <param name="builder">The builder to transform.</param>
/// <returns>
/// A new <see cref="ISpecimenBuilder"/> created from <paramref name="builder"/>.
/// </returns>
/// <remarks>
/// <para>
/// Although a <see cref="NoSpecimenOutputGuard"/> throws if the decorated
/// <see cref="ISpecimenBuilder"/> returns a <see cref="NoSpecimen"/>, this
/// transformation permits NoSpecimen return values if the request is a
/// <see cref="SeededRequest"/> for the <see cref="TargetType"/>. This enables the
/// engine to retry the request with the unwrapped <see cref="Type"/> request.
/// </para>
/// </remarks>
public ISpecimenBuilder Transform(ISpecimenBuilder builder)
{
var allowedNoSpecimenFilter = new SeedRequestSpecification(this.targetType);
var throwSpec = new InverseRequestSpecification(allowedNoSpecimenFilter);
return new NoSpecimenOutputGuard(builder, throwSpec);
}
