SubscriberBlackboxVerification (reactive-streams-tck 1.0.2 API)

java.lang.Object
- org.reactivestreams.tck.WithHelperPublisher<T>
- - org.reactivestreams.tck.SubscriberBlackboxVerification<T>

All Implemented Interfaces:

SubscriberBlackboxVerificationRules
```
public abstract class SubscriberBlackboxVerification<T>
extends WithHelperPublisher<T>
implements SubscriberBlackboxVerificationRules
```
Provides tests for verifying Subscriber and Subscription specification rules, without any modifications to the tested implementation (also known as "Black Box" testing). This verification is NOT able to check many of the rules of the spec, and if you want more verification of your implementation you'll have to implement org.reactivestreams.tck.SubscriberWhiteboxVerification instead.

See Also:

Subscriber, Subscription

Nested Class Summary

Nested Classes
Modifier and Type Class Description

class SubscriberBlackboxVerification.BlackboxTestStage

Nested Classes
Modifier and Type	Class	Description
`class`	`SubscriberBlackboxVerification.BlackboxTestStage`

Field Summary

Fields
Modifier and Type Field Description

protected TestEnvironment env

Fields
Modifier and Type	Field	Description
`protected TestEnvironment`	`env`

Constructor Summary

Constructors
Modifier Constructor Description

protected SubscriberBlackboxVerification(TestEnvironment env)

Constructors
Modifier	Constructor	Description
`protected`	`SubscriberBlackboxVerification(TestEnvironment env)`

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`blackboxSubscriberTest(org.reactivestreams.tck.SubscriberBlackboxVerification.BlackboxTestStageTestRun body)`
`void`	`blackboxSubscriberWithoutSetupTest(org.reactivestreams.tck.SubscriberBlackboxVerification.BlackboxTestStageTestRun body)`
`abstract org.reactivestreams.Subscriber<T>`	`createSubscriber()`	This is the main method you must implement in your test incarnation.
`void`	`notVerified()`
`java.util.concurrent.ExecutorService`	`publisherExecutorService()`	ExecutorService to be used by the provided helper `Publisher`
`void`	`required_spec201_blackbox_mustSignalDemandViaSubscriptionRequest()`	Asks for a `Subscriber` instance, expects it to call `request()` in a timely manner and signals as many `onNext` items as the very first request amount specified by the `Subscriber`.
`void`	`required_spec203_blackbox_mustNotCallMethodsOnSubscriptionOrPublisherInOnComplete()`	Asks for a `Subscriber`, signals an `onSubscribe` followed by an `onComplete` synchronously, and checks if neither `request` nor `cancel` was called from within the `Subscriber`'s `onComplete` implementation.
`void`	`required_spec203_blackbox_mustNotCallMethodsOnSubscriptionOrPublisherInOnError()`	Asks for a `Subscriber`, signals an `onSubscribe` followed by an `onError` synchronously, and checks if neither `request` nor `cancel` was called from within the `Subscriber`'s `onComplete` implementation.
`void`	`required_spec205_blackbox_mustCallSubscriptionCancelIfItAlreadyHasAnSubscriptionAndReceivesAnotherOnSubscribeSignal()`	Asks for a `Subscriber`, signals `onSubscribe` twice synchronously and expects the second `Subscription` gets cancelled in a timely manner and without any calls to its `request` method.
`void`	`required_spec209_blackbox_mustBePreparedToReceiveAnOnCompleteSignalWithoutPrecedingRequestCall()`	Asks for a `Subscriber` and expects it to handle `onComplete` independent of whether the `Subscriber` requests items or not.
`void`	`required_spec209_blackbox_mustBePreparedToReceiveAnOnCompleteSignalWithPrecedingRequestCall()`	Asks for a `Subscriber`, expects it to request some amount and in turn be able to receive an `onComplete` synchronously from the `request` call without any `onNext` signals before that.
`void`	`required_spec210_blackbox_mustBePreparedToReceiveAnOnErrorSignalWithoutPrecedingRequestCall()`	Asks for a `Subscriber`, signals `onSubscribe` followed by an `onError` synchronously.
`void`	`required_spec210_blackbox_mustBePreparedToReceiveAnOnErrorSignalWithPrecedingRequestCall()`	Asks for a `Subscriber`, signals `onSubscribe` followed by an `onError` synchronously.
`void`	`required_spec213_blackbox_onError_mustThrowNullPointerExceptionWhenParametersAreNull()`	Asks for a `Subscriber`, signals an `onSubscribe` event followed by a `onError` with `null` as a parameter and expects an immediate `NullPointerException` to be thrown by the `Subscriber.onError` method.
`void`	`required_spec213_blackbox_onNext_mustThrowNullPointerExceptionWhenParametersAreNull()`	Asks for a `Subscriber`, signals an `onSubscribe` event followed by a `onNext` with `null` as a parameter and expects an immediate `NullPointerException` to be thrown by the `Subscriber.onNext` method.
`void`	`required_spec213_blackbox_onSubscribe_mustThrowNullPointerExceptionWhenParametersAreNull()`	Asks for a `Subscriber` and signals an `onSubscribe` event with `null` as a parameter and expects an immediate `NullPointerException` to be thrown by the `Subscriber.onSubscribe` method.
`void`	`setUp()`
`void`	`shutdownPublisherExecutorService()`
`void`	`startPublisherExecutorService()`
`void`	`triggerRequest(org.reactivestreams.Subscriber<? super T> subscriber)`	Override this method if the Subscriber implementation you are verifying needs an external signal before it signals demand to its Publisher.
`void`	`untested_spec202_blackbox_shouldAsynchronouslyDispatch()`	Currently, this test is skipped because there is no agreed upon approach how to detect if the `Subscriber` really goes async or just responds in a timely manner.
`void`	`untested_spec204_blackbox_mustConsiderTheSubscriptionAsCancelledInAfterRecievingOnCompleteOrOnError()`	Currently, this test is skipped because there is no way to check what the `Subscriber` "considers" since rule §2.3 forbids interaction from within the `onError` and `onComplete` methods.
`void`	`untested_spec206_blackbox_mustCallSubscriptionCancelIfItIsNoLongerValid()`	Currently, this test is skipped because it requires more control over the `Subscriber` implementation to make it cancel the `Subscription` for some external condition.
`void`	`untested_spec207_blackbox_mustEnsureAllCallsOnItsSubscriptionTakePlaceFromTheSameThreadOrTakeCareOfSynchronization()`	Currently, this test is skipped because it requires more control over the `Subscriber` implementation to issue requests based on external stimulus.
`void`	`untested_spec208_blackbox_mustBePreparedToReceiveOnNextSignalsAfterHavingCalledSubscriptionCancel()`	Currently, this test is skipped because there is no way to make the `Subscriber` implementation cancel the test's `Subscription` and check the outcome of sending `onNext`s after such cancel.
`void`	`untested_spec211_blackbox_mustMakeSureThatAllCallsOnItsMethodsHappenBeforeTheProcessingOfTheRespectiveEvents()`	Currently, this test is skipped because it would require analyzing what the `Subscriber` implementation does.
`void`	`untested_spec212_blackbox_mustNotCallOnSubscribeMoreThanOnceBasedOnObjectEquality()`	Currently, this test is skipped because the test for `§2.5` is in a better position to test for handling the reuse of the same `Subscriber`.
`void`	`untested_spec213_blackbox_failingOnSignalInvocation()`	Currently, this test is skipped because it would require more control over the `Subscriber` to fail internally in response to a set of legal event emissions, not throw any exception from the `Subscriber` methods and have it cancel the `Subscription`.
`void`	`untested_spec301_blackbox_mustNotBeCalledOutsideSubscriberContext()`	Currently, this test is skipped because there is no agreed upon way for specifying, enforcing and testing a `Subscriber` with an arbitrary context.
`void`	`untested_spec308_blackbox_requestMustRegisterGivenNumberElementsToBeProduced()`	Currently, this test is skipped because element production is the responsibility of the `Publisher` and a `Subscription` is not expected to be the active element in an established subscription.
`void`	`untested_spec310_blackbox_requestMaySynchronouslyCallOnNextOnSubscriber()`	Currently, this test is skipped because element production is the responsibility of the `Publisher` and a `Subscription` is not expected to be the active element in an established subscription.
`void`	`untested_spec311_blackbox_requestMaySynchronouslyCallOnCompleteOrOnError()`	Currently, this test is skipped because signal production is the responsibility of the `Publisher` and a `Subscription` is not expected to be the active element in an established subscription.
`void`	`untested_spec314_blackbox_cancelMayCauseThePublisherToShutdownIfNoOtherSubscriptionExists()`	Currently, this test is skipped because it is the responsibility of the `Publisher` deal with the case that all subscribers have cancelled their subscription.
`void`	`untested_spec315_blackbox_cancelMustNotThrowExceptionAndMustSignalOnError()`	Currently, this test is skipped because it requires more control over the `Subscriber` implementation thus there is no way to detect that the `Subscriber` called its own `onError` method in response to an exception thrown from `Subscription.cancel`.
`void`	`untested_spec316_blackbox_requestMustNotThrowExceptionAndMustOnErrorTheSubscriber()`	Currently, this test is skipped because it requires more control over the `Subscriber` implementation thus there is no way to detect that the `Subscriber` called its own `onError` method in response to an exception thrown from `Subscription.request`.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from class org.reactivestreams.tck.WithHelperPublisher
createElement, createHelperPublisher

- Field Detail
  - env
```
protected final TestEnvironment env
```
- Constructor Detail
  - SubscriberBlackboxVerification
```
protected SubscriberBlackboxVerification(TestEnvironment env)
```
- Method Detail
  - createSubscriber
```
public abstract org.reactivestreams.Subscriber<T> createSubscriber()
```
    This is the main method you must implement in your test incarnation. It must create a new Subscriber instance to be subjected to the testing logic.
  - triggerRequest
```
public void triggerRequest(org.reactivestreams.Subscriber<? super T> subscriber)
```
    Override this method if the Subscriber implementation you are verifying needs an external signal before it signals demand to its Publisher. By default this method does nothing.
  - startPublisherExecutorService
```
public void startPublisherExecutorService()
```
  - shutdownPublisherExecutorService
```
public void shutdownPublisherExecutorService()
```
  - publisherExecutorService
```
public java.util.concurrent.ExecutorService publisherExecutorService()
```
    Description copied from class: WithHelperPublisher
    
    ExecutorService to be used by the provided helper Publisher
    
    Specified by:
    
    publisherExecutorService in class WithHelperPublisher<T>
  - setUp
```
public void setUp()
           throws java.lang.Exception
```
    Throws:
    
    java.lang.Exception
  - required_spec201_blackbox_mustSignalDemandViaSubscriptionRequest
```
public void required_spec201_blackbox_mustSignalDemandViaSubscriptionRequest()
                                                                      throws java.lang.Throwable
```
    Description copied from interface: SubscriberBlackboxVerificationRules
    Asks for a Subscriber instance, expects it to call request() in a timely manner and signals as many onNext items as the very first request amount specified by the Subscriber.
    Verifies rule: 2.1
    Notes:
    - This test emits the number of items requested thus the Subscriber implementation should not request too much.
    - Only the very first request amount is considered.
    - This test doesn't signal onComplete after the first set of onNext signals has been emitted and may cause resource leak in Subscribers that expect a finite Publisher.
    - The test ignores cancellation from the Subscriber and emits the requested amount regardless.
    If this test fails, the following could be checked within the Subscriber implementation:
    - if the Subscriber requires external stimulus to begin requesting; override the triggerRequest(org.reactivestreams.Subscriber) method in this case,
    - the TestEnvironment has large enough timeout specified in case the Subscriber has some time-delay behavior,
    - if the Subscriber requests zero or a negative value in some circumstances,
    - if the Subscriber throws an unchecked exception from its onSubscribe or onNext methods.
    Specified by:
    
    required_spec201_blackbox_mustSignalDemandViaSubscriptionRequest in interface SubscriberBlackboxVerificationRules
    
    Throws:
    
    java.lang.Throwable
  - untested_spec202_blackbox_shouldAsynchronouslyDispatch
```
public void untested_spec202_blackbox_shouldAsynchronouslyDispatch()
                                                            throws java.lang.Exception
```
    Description copied from interface: SubscriberBlackboxVerificationRules
    
    Currently, this test is skipped because there is no agreed upon approach how to detect if the Subscriber really goes async or just responds in a timely manner.
    Verifies rule: 2.2
    
    Specified by:
    
    untested_spec202_blackbox_shouldAsynchronouslyDispatch in interface SubscriberBlackboxVerificationRules
    
    Throws:
    
    java.lang.Exception
  - required_spec203_blackbox_mustNotCallMethodsOnSubscriptionOrPublisherInOnComplete
```
public void required_spec203_blackbox_mustNotCallMethodsOnSubscriptionOrPublisherInOnComplete()
                                                                                       throws java.lang.Throwable
```
    Description copied from interface: SubscriberBlackboxVerificationRules
    Asks for a Subscriber, signals an onSubscribe followed by an onComplete synchronously, and checks if neither request nor cancel was called from within the Subscriber's onComplete implementation.
    Verifies rule: 2.3
    Notes:
    - The test checks for the presensce of method named "onComplete" in the current stacktrace when handling the request or cancel calls in the test's own Subscription.
    If this test fails, the following could be checked within the Subscriber implementation:
    - no calls happen to request or cancel in response to an onComplete directly or indirectly,
    - if the Subscriber throws an unchecked exception from its onSubscribe or onComplete methods.
    Specified by:
    
    required_spec203_blackbox_mustNotCallMethodsOnSubscriptionOrPublisherInOnComplete in interface SubscriberBlackboxVerificationRules
    
    Throws:
    
    java.lang.Throwable
  - required_spec203_blackbox_mustNotCallMethodsOnSubscriptionOrPublisherInOnError
```
public void required_spec203_blackbox_mustNotCallMethodsOnSubscriptionOrPublisherInOnError()
                                                                                    throws java.lang.Throwable
```
    Description copied from interface: SubscriberBlackboxVerificationRules
    Asks for a Subscriber, signals an onSubscribe followed by an onError synchronously, and checks if neither request nor cancel was called from within the Subscriber's onComplete implementation.
    Verifies rule: 2.3
    Notes:
    - The test checks for the presensce of method named "onError" in the current stacktrace when handling the request or cancel calls in the test's own Subscription.
    If this test fails, the following could be checked within the Subscriber implementation:
    - no calls happen to request or cancel in response to an onError directly or indirectly,
    - if the Subscriber throws an unchecked exception from its onSubscribe or onError methods.
    Specified by:
    
    required_spec203_blackbox_mustNotCallMethodsOnSubscriptionOrPublisherInOnError in interface SubscriberBlackboxVerificationRules
    
    Throws:
    
    java.lang.Throwable
  - untested_spec204_blackbox_mustConsiderTheSubscriptionAsCancelledInAfterRecievingOnCompleteOrOnError
```
public void untested_spec204_blackbox_mustConsiderTheSubscriptionAsCancelledInAfterRecievingOnCompleteOrOnError()
                                                                                                         throws java.lang.Exception
```
    Description copied from interface: SubscriberBlackboxVerificationRules
    Currently, this test is skipped because there is no way to check what the Subscriber "considers" since rule §2.3 forbids interaction from within the onError and onComplete methods.
    Verifies rule: 2.4
    Notes:
    - It would be possible to check if there was an async interaction with the test's Subscription within a grace period but such check is still not generally decisive.
    Specified by:
    
    untested_spec204_blackbox_mustConsiderTheSubscriptionAsCancelledInAfterRecievingOnCompleteOrOnError in interface SubscriberBlackboxVerificationRules
    
    Throws:
    
    java.lang.Exception
  - required_spec205_blackbox_mustCallSubscriptionCancelIfItAlreadyHasAnSubscriptionAndReceivesAnotherOnSubscribeSignal
```
public void required_spec205_blackbox_mustCallSubscriptionCancelIfItAlreadyHasAnSubscriptionAndReceivesAnotherOnSubscribeSignal()
                                                                                                                         throws java.lang.Exception
```
    Description copied from interface: SubscriberBlackboxVerificationRules
    Asks for a Subscriber, signals onSubscribe twice synchronously and expects the second Subscription gets cancelled in a timely manner and without any calls to its request method.
    Verifies rule: 2.5
    Notes:
    - The test doesn't signal any other events than onSubscribe and may cause resource leak in Subscribers that expect a finite Publisher.
    If this test fails, the following could be checked within the Subscriber implementation:
    - if the Subscribe.onSubscribe implementation actually tries to detect multiple calls to it,
    - if the second Subscription is cancelled asynchronously and that takes longer time than the TestEnvironment's timeout permits.
    Specified by:
    
    required_spec205_blackbox_mustCallSubscriptionCancelIfItAlreadyHasAnSubscriptionAndReceivesAnotherOnSubscribeSignal in interface SubscriberBlackboxVerificationRules
    
    Throws:
    
    java.lang.Exception
  - untested_spec206_blackbox_mustCallSubscriptionCancelIfItIsNoLongerValid
```
public void untested_spec206_blackbox_mustCallSubscriptionCancelIfItIsNoLongerValid()
                                                                             throws java.lang.Exception
```
    Description copied from interface: SubscriberBlackboxVerificationRules
    
    Currently, this test is skipped because it requires more control over the Subscriber implementation to make it cancel the Subscription for some external condition.
    Verifies rule: 2.6
    
    Specified by:
    
    untested_spec206_blackbox_mustCallSubscriptionCancelIfItIsNoLongerValid in interface SubscriberBlackboxVerificationRules
    
    Throws:
    
    java.lang.Exception
  - untested_spec207_blackbox_mustEnsureAllCallsOnItsSubscriptionTakePlaceFromTheSameThreadOrTakeCareOfSynchronization
```
public void untested_spec207_blackbox_mustEnsureAllCallsOnItsSubscriptionTakePlaceFromTheSameThreadOrTakeCareOfSynchronization()
                                                                                                                        throws java.lang.Exception
```
    Description copied from interface: SubscriberBlackboxVerificationRules
    
    Currently, this test is skipped because it requires more control over the Subscriber implementation to issue requests based on external stimulus.
    Verifies rule: 2.7
    
    Specified by:
    
    untested_spec207_blackbox_mustEnsureAllCallsOnItsSubscriptionTakePlaceFromTheSameThreadOrTakeCareOfSynchronization in interface SubscriberBlackboxVerificationRules
    
    Throws:
    
    java.lang.Exception
  - untested_spec208_blackbox_mustBePreparedToReceiveOnNextSignalsAfterHavingCalledSubscriptionCancel
```
public void untested_spec208_blackbox_mustBePreparedToReceiveOnNextSignalsAfterHavingCalledSubscriptionCancel()
                                                                                                       throws java.lang.Throwable
```
    Description copied from interface: SubscriberBlackboxVerificationRules
    
    Currently, this test is skipped because there is no way to make the Subscriber implementation cancel the test's Subscription and check the outcome of sending onNexts after such cancel.
    Verifies rule: 2.8
    
    Specified by:
    
    untested_spec208_blackbox_mustBePreparedToReceiveOnNextSignalsAfterHavingCalledSubscriptionCancel in interface SubscriberBlackboxVerificationRules
    
    Throws:
    
    java.lang.Throwable
  - required_spec209_blackbox_mustBePreparedToReceiveAnOnCompleteSignalWithPrecedingRequestCall
```
public void required_spec209_blackbox_mustBePreparedToReceiveAnOnCompleteSignalWithPrecedingRequestCall()
                                                                                                 throws java.lang.Throwable
```
    Description copied from interface: SubscriberBlackboxVerificationRules
    Asks for a Subscriber, expects it to request some amount and in turn be able to receive an onComplete synchronously from the request call without any onNext signals before that.
    Verifies rule: 2.9
    Notes:
    - The test ignores cancellation from the Subscriber.
    - Invalid request amounts are ignored by this test.
    - Concurrent calls to the test's Subscription.request() must be externally synchronized, otherwise such case results probabilistically in multiple onComplete calls by the test.
    If this test fails, the following could be checked within the Subscriber implementation:
    - if the Subscriber throws an unchecked exception from its onSubscribe or onComplete methods.
    - if the Subscriber requires external stimulus to begin requesting; override the triggerRequest(org.reactivestreams.Subscriber) method in this case,
    Specified by:
    
    required_spec209_blackbox_mustBePreparedToReceiveAnOnCompleteSignalWithPrecedingRequestCall in interface SubscriberBlackboxVerificationRules
    
    Throws:
    
    java.lang.Throwable
  - required_spec209_blackbox_mustBePreparedToReceiveAnOnCompleteSignalWithoutPrecedingRequestCall
```
public void required_spec209_blackbox_mustBePreparedToReceiveAnOnCompleteSignalWithoutPrecedingRequestCall()
                                                                                                    throws java.lang.Throwable
```
    Description copied from interface: SubscriberBlackboxVerificationRules
    Asks for a Subscriber and expects it to handle onComplete independent of whether the Subscriber requests items or not.
    Verifies rule: 2.9
    Notes:
    - Currently, the test doesn't call onSubscribe on the Subscriber which violates §1.9.
    If this test fails, the following could be checked within the Subscriber implementation:
    - if the Subscriber throws an unchecked exception from its onSubscribe or onComplete methods.
    Specified by:
    
    required_spec209_blackbox_mustBePreparedToReceiveAnOnCompleteSignalWithoutPrecedingRequestCall in interface SubscriberBlackboxVerificationRules
    
    Throws:
    
    java.lang.Throwable
  - required_spec210_blackbox_mustBePreparedToReceiveAnOnErrorSignalWithPrecedingRequestCall
```
public void required_spec210_blackbox_mustBePreparedToReceiveAnOnErrorSignalWithPrecedingRequestCall()
                                                                                              throws java.lang.Throwable
```
    Description copied from interface: SubscriberBlackboxVerificationRules
    Asks for a Subscriber, signals onSubscribe followed by an onError synchronously.
    Verifies rule: 2.10
    Notes:
    - Despite the method name, the test doesn't expect a request signal from Subscriber and emits the onError signal anyway.
    If this test fails, the following could be checked within the Subscriber implementation:
    - if the Subscriber throws an unchecked exception from its onSubscribe or onError methods.
    Specified by:
    
    required_spec210_blackbox_mustBePreparedToReceiveAnOnErrorSignalWithPrecedingRequestCall in interface SubscriberBlackboxVerificationRules
    
    Throws:
    
    java.lang.Throwable
  - required_spec210_blackbox_mustBePreparedToReceiveAnOnErrorSignalWithoutPrecedingRequestCall
```
public void required_spec210_blackbox_mustBePreparedToReceiveAnOnErrorSignalWithoutPrecedingRequestCall()
                                                                                                 throws java.lang.Throwable
```
    Description copied from interface: SubscriberBlackboxVerificationRules
    Asks for a Subscriber, signals onSubscribe followed by an onError synchronously.
    Verifies rule: 2.10
    If this test fails, the following could be checked within the Subscriber implementation:
    - if the Subscriber throws an unchecked exception from its onSubscribe or onError methods.
    Specified by:
    
    required_spec210_blackbox_mustBePreparedToReceiveAnOnErrorSignalWithoutPrecedingRequestCall in interface SubscriberBlackboxVerificationRules
    
    Throws:
    
    java.lang.Throwable
  - untested_spec211_blackbox_mustMakeSureThatAllCallsOnItsMethodsHappenBeforeTheProcessingOfTheRespectiveEvents
```
public void untested_spec211_blackbox_mustMakeSureThatAllCallsOnItsMethodsHappenBeforeTheProcessingOfTheRespectiveEvents()
                                                                                                                  throws java.lang.Exception
```
    Description copied from interface: SubscriberBlackboxVerificationRules
    
    Currently, this test is skipped because it would require analyzing what the Subscriber implementation does.
    Verifies rule: 2.11
    
    Specified by:
    
    untested_spec211_blackbox_mustMakeSureThatAllCallsOnItsMethodsHappenBeforeTheProcessingOfTheRespectiveEvents in interface SubscriberBlackboxVerificationRules
    
    Throws:
    
    java.lang.Exception
  - untested_spec212_blackbox_mustNotCallOnSubscribeMoreThanOnceBasedOnObjectEquality
```
public void untested_spec212_blackbox_mustNotCallOnSubscribeMoreThanOnceBasedOnObjectEquality()
                                                                                       throws java.lang.Throwable
```
    Description copied from interface: SubscriberBlackboxVerificationRules
    Currently, this test is skipped because the test for §2.5 is in a better position to test for handling the reuse of the same Subscriber.
    Verifies rule: 2.12
    Notes:
    - In addition to §2.5, this rule could be better verified when testing a Publisher's subscription behavior.
    Specified by:
    
    untested_spec212_blackbox_mustNotCallOnSubscribeMoreThanOnceBasedOnObjectEquality in interface SubscriberBlackboxVerificationRules
    
    Throws:
    
    java.lang.Throwable
  - untested_spec213_blackbox_failingOnSignalInvocation
```
public void untested_spec213_blackbox_failingOnSignalInvocation()
                                                         throws java.lang.Exception
```
    Description copied from interface: SubscriberBlackboxVerificationRules
    
    Currently, this test is skipped because it would require more control over the Subscriber to fail internally in response to a set of legal event emissions, not throw any exception from the Subscriber methods and have it cancel the Subscription.
    Verifies rule: 2.13
    
    Specified by:
    
    untested_spec213_blackbox_failingOnSignalInvocation in interface SubscriberBlackboxVerificationRules
    
    Throws:
    
    java.lang.Exception
  - required_spec213_blackbox_onSubscribe_mustThrowNullPointerExceptionWhenParametersAreNull
```
public void required_spec213_blackbox_onSubscribe_mustThrowNullPointerExceptionWhenParametersAreNull()
                                                                                              throws java.lang.Throwable
```
    Description copied from interface: SubscriberBlackboxVerificationRules
    Asks for a Subscriber and signals an onSubscribe event with null as a parameter and expects an immediate NullPointerException to be thrown by the Subscriber.onSubscribe method.
    Verifies rule: 2.13
    If this test fails, the following could be checked within the Subscriber implementation:
    - if the Subscriber throws a NullPointerException from its onSubscribe method in response to a null parameter and not some other unchecked exception or no exception at all.
    Specified by:
    
    required_spec213_blackbox_onSubscribe_mustThrowNullPointerExceptionWhenParametersAreNull in interface SubscriberBlackboxVerificationRules
    
    Throws:
    
    java.lang.Throwable
  - required_spec213_blackbox_onNext_mustThrowNullPointerExceptionWhenParametersAreNull
```
public void required_spec213_blackbox_onNext_mustThrowNullPointerExceptionWhenParametersAreNull()
                                                                                         throws java.lang.Throwable
```
    Description copied from interface: SubscriberBlackboxVerificationRules
    Asks for a Subscriber, signals an onSubscribe event followed by a onNext with null as a parameter and expects an immediate NullPointerException to be thrown by the Subscriber.onNext method.
    Verifies rule: 2.13
    Notes:
    - The test ignores cancellation and requests from the Subscriber and emits the onNext signal with a null parameter anyway.
    If this test fails, the following could be checked within the Subscriber implementation:
    - if the Subscriber throws a NullPointerException from its onNext method in response to a null parameter and not some other unchecked exception or no exception at all.
    Specified by:
    
    required_spec213_blackbox_onNext_mustThrowNullPointerExceptionWhenParametersAreNull in interface SubscriberBlackboxVerificationRules
    
    Throws:
    
    java.lang.Throwable
  - required_spec213_blackbox_onError_mustThrowNullPointerExceptionWhenParametersAreNull
```
public void required_spec213_blackbox_onError_mustThrowNullPointerExceptionWhenParametersAreNull()
                                                                                          throws java.lang.Throwable
```
    Description copied from interface: SubscriberBlackboxVerificationRules
    Asks for a Subscriber, signals an onSubscribe event followed by a onError with null as a parameter and expects an immediate NullPointerException to be thrown by the Subscriber.onError method.
    Verifies rule: 2.13
    Notes:
    - The test ignores cancellation from the Subscriber and emits the onError signal with a null parameter anyway.
    If this test fails, the following could be checked within the Subscriber implementation:
    - if the Subscriber throws a NullPointerException from its onNext method in response to a null parameter and not some other unchecked exception or no exception at all.
    Specified by:
    
    required_spec213_blackbox_onError_mustThrowNullPointerExceptionWhenParametersAreNull in interface SubscriberBlackboxVerificationRules
    
    Throws:
    
    java.lang.Throwable
  - untested_spec301_blackbox_mustNotBeCalledOutsideSubscriberContext
```
public void untested_spec301_blackbox_mustNotBeCalledOutsideSubscriberContext()
                                                                       throws java.lang.Exception
```
    Description copied from interface: SubscriberBlackboxVerificationRules
    
    Currently, this test is skipped because there is no agreed upon way for specifying, enforcing and testing a Subscriber with an arbitrary context.
    Verifies rule: 3.1
    
    Specified by:
    
    untested_spec301_blackbox_mustNotBeCalledOutsideSubscriberContext in interface SubscriberBlackboxVerificationRules
    
    Throws:
    
    java.lang.Exception
  - untested_spec308_blackbox_requestMustRegisterGivenNumberElementsToBeProduced
```
public void untested_spec308_blackbox_requestMustRegisterGivenNumberElementsToBeProduced()
                                                                                  throws java.lang.Throwable
```
    Description copied from interface: SubscriberBlackboxVerificationRules
    
    Currently, this test is skipped because element production is the responsibility of the Publisher and a Subscription is not expected to be the active element in an established subscription.
    Verifies rule: 3.8
    
    Specified by:
    
    untested_spec308_blackbox_requestMustRegisterGivenNumberElementsToBeProduced in interface SubscriberBlackboxVerificationRules
    
    Throws:
    
    java.lang.Throwable
  - untested_spec310_blackbox_requestMaySynchronouslyCallOnNextOnSubscriber
```
public void untested_spec310_blackbox_requestMaySynchronouslyCallOnNextOnSubscriber()
                                                                             throws java.lang.Exception
```
    Description copied from interface: SubscriberBlackboxVerificationRules
    Currently, this test is skipped because element production is the responsibility of the Publisher and a Subscription is not expected to be the active element in an established subscription.
    Verifies rule: 3.10
    Notes:
    - This could be tested with a synchronous source currently not available within the TCK.
    Specified by:
    
    untested_spec310_blackbox_requestMaySynchronouslyCallOnNextOnSubscriber in interface SubscriberBlackboxVerificationRules
    
    Throws:
    
    java.lang.Exception
  - untested_spec311_blackbox_requestMaySynchronouslyCallOnCompleteOrOnError
```
public void untested_spec311_blackbox_requestMaySynchronouslyCallOnCompleteOrOnError()
                                                                              throws java.lang.Exception
```
    Description copied from interface: SubscriberBlackboxVerificationRules
    Currently, this test is skipped because signal production is the responsibility of the Publisher and a Subscription is not expected to be the active element in an established subscription.
    Verifies rule: 3.11
    Notes:
    - Tests §2.9 and §2.10 are supposed to cover this case from the Subscriber's perspective.
    Specified by:
    
    untested_spec311_blackbox_requestMaySynchronouslyCallOnCompleteOrOnError in interface SubscriberBlackboxVerificationRules
    
    Throws:
    
    java.lang.Exception
  - untested_spec314_blackbox_cancelMayCauseThePublisherToShutdownIfNoOtherSubscriptionExists
```
public void untested_spec314_blackbox_cancelMayCauseThePublisherToShutdownIfNoOtherSubscriptionExists()
                                                                                               throws java.lang.Exception
```
    Description copied from interface: SubscriberBlackboxVerificationRules
    Currently, this test is skipped because it is the responsibility of the Publisher deal with the case that all subscribers have cancelled their subscription.
    Verifies rule: 3.14
    Notes:
    - The specification lists this as an optional behavior because only some Publisher implementations (most likely Processors) would coordinate with multiple Subscribers.
    Specified by:
    
    untested_spec314_blackbox_cancelMayCauseThePublisherToShutdownIfNoOtherSubscriptionExists in interface SubscriberBlackboxVerificationRules
    
    Throws:
    
    java.lang.Exception
  - untested_spec315_blackbox_cancelMustNotThrowExceptionAndMustSignalOnError
```
public void untested_spec315_blackbox_cancelMustNotThrowExceptionAndMustSignalOnError()
                                                                               throws java.lang.Exception
```
    Description copied from interface: SubscriberBlackboxVerificationRules
    
    Currently, this test is skipped because it requires more control over the Subscriber implementation thus there is no way to detect that the Subscriber called its own onError method in response to an exception thrown from Subscription.cancel.
    Verifies rule: 3.15
    
    Specified by:
    
    untested_spec315_blackbox_cancelMustNotThrowExceptionAndMustSignalOnError in interface SubscriberBlackboxVerificationRules
    
    Throws:
    
    java.lang.Exception
  - untested_spec316_blackbox_requestMustNotThrowExceptionAndMustOnErrorTheSubscriber
```
public void untested_spec316_blackbox_requestMustNotThrowExceptionAndMustOnErrorTheSubscriber()
                                                                                       throws java.lang.Exception
```
    Description copied from interface: SubscriberBlackboxVerificationRules
    
    Currently, this test is skipped because it requires more control over the Subscriber implementation thus there is no way to detect that the Subscriber called its own onError method in response to an exception thrown from Subscription.request.
    Verifies rule: 3.16
    
    Specified by:
    
    untested_spec316_blackbox_requestMustNotThrowExceptionAndMustOnErrorTheSubscriber in interface SubscriberBlackboxVerificationRules
    
    Throws:
    
    java.lang.Exception
  - blackboxSubscriberTest
```
public void blackboxSubscriberTest(org.reactivestreams.tck.SubscriberBlackboxVerification.BlackboxTestStageTestRun body)
                            throws java.lang.Throwable
```
    Throws:
    
    java.lang.Throwable
  - blackboxSubscriberWithoutSetupTest
```
public void blackboxSubscriberWithoutSetupTest(org.reactivestreams.tck.SubscriberBlackboxVerification.BlackboxTestStageTestRun body)
                                        throws java.lang.Throwable
```
    Throws:
    
    java.lang.Throwable
  - notVerified
```
public void notVerified()
```

Class SubscriberBlackboxVerification<T>

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from class org.reactivestreams.tck.WithHelperPublisher

Field Detail

env

Constructor Detail

SubscriberBlackboxVerification

Method Detail

createSubscriber

triggerRequest

startPublisherExecutorService

shutdownPublisherExecutorService

publisherExecutorService

setUp

required_spec201_blackbox_mustSignalDemandViaSubscriptionRequest

untested_spec202_blackbox_shouldAsynchronouslyDispatch

required_spec203_blackbox_mustNotCallMethodsOnSubscriptionOrPublisherInOnComplete

required_spec203_blackbox_mustNotCallMethodsOnSubscriptionOrPublisherInOnError

untested_spec204_blackbox_mustConsiderTheSubscriptionAsCancelledInAfterRecievingOnCompleteOrOnError

required_spec205_blackbox_mustCallSubscriptionCancelIfItAlreadyHasAnSubscriptionAndReceivesAnotherOnSubscribeSignal

untested_spec206_blackbox_mustCallSubscriptionCancelIfItIsNoLongerValid

untested_spec207_blackbox_mustEnsureAllCallsOnItsSubscriptionTakePlaceFromTheSameThreadOrTakeCareOfSynchronization

untested_spec208_blackbox_mustBePreparedToReceiveOnNextSignalsAfterHavingCalledSubscriptionCancel

required_spec209_blackbox_mustBePreparedToReceiveAnOnCompleteSignalWithPrecedingRequestCall

required_spec209_blackbox_mustBePreparedToReceiveAnOnCompleteSignalWithoutPrecedingRequestCall

required_spec210_blackbox_mustBePreparedToReceiveAnOnErrorSignalWithPrecedingRequestCall

required_spec210_blackbox_mustBePreparedToReceiveAnOnErrorSignalWithoutPrecedingRequestCall

untested_spec211_blackbox_mustMakeSureThatAllCallsOnItsMethodsHappenBeforeTheProcessingOfTheRespectiveEvents

untested_spec212_blackbox_mustNotCallOnSubscribeMoreThanOnceBasedOnObjectEquality

untested_spec213_blackbox_failingOnSignalInvocation

required_spec213_blackbox_onSubscribe_mustThrowNullPointerExceptionWhenParametersAreNull

required_spec213_blackbox_onNext_mustThrowNullPointerExceptionWhenParametersAreNull

required_spec213_blackbox_onError_mustThrowNullPointerExceptionWhenParametersAreNull

untested_spec301_blackbox_mustNotBeCalledOutsideSubscriberContext

untested_spec308_blackbox_requestMustRegisterGivenNumberElementsToBeProduced

untested_spec310_blackbox_requestMaySynchronouslyCallOnNextOnSubscriber

untested_spec311_blackbox_requestMaySynchronouslyCallOnCompleteOrOnError

untested_spec314_blackbox_cancelMayCauseThePublisherToShutdownIfNoOtherSubscriptionExists

untested_spec315_blackbox_cancelMustNotThrowExceptionAndMustSignalOnError

untested_spec316_blackbox_requestMustNotThrowExceptionAndMustOnErrorTheSubscriber

blackboxSubscriberTest

blackboxSubscriberWithoutSetupTest

notVerified