SingleFirstStep

Type Parameters:

T - The type of SingleSource.Subscriber.

All Superinterfaces:

SingleLastStep<T>
```
public interface SingleFirstStep<T>
extends SingleLastStep<T>
```
Provides the ability to express expectations for the first step in a Subscriber's lifecycle.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`SingleLastStep<T>`	`expectCancellable()`	Declare an expectation that `SingleSource.Subscriber.onSubscribe(Cancellable)` is the next signal.
`SingleLastStep<T>`	`expectCancellableConsumed(java.util.function.Consumer<? super Cancellable> consumer)`	Declare an expectation that can be asserted when the `SingleSource.Subscriber.onSubscribe(Cancellable)` method is called.

Methods inherited from interface io.servicetalk.concurrent.api.test.SingleLastStep
expectError, expectError, expectErrorConsumed, expectErrorMatches, expectNoSignals, expectSuccess, expectSuccess, expectSuccessConsumed, expectSuccessMatches, then, thenAwait, thenCancel

- Method Detail
  - expectCancellable
```
SingleLastStep<T> expectCancellable()
```
    Declare an expectation that SingleSource.Subscriber.onSubscribe(Cancellable) is the next signal.
    
    Returns:
    
    An object which allows for subsequent expectations to be defined.
  - expectCancellableConsumed
```
SingleLastStep<T> expectCancellableConsumed(java.util.function.Consumer<? super Cancellable> consumer)
```
    Declare an expectation that can be asserted when the SingleSource.Subscriber.onSubscribe(Cancellable) method is called.
    
    Parameters:
    
    consumer - Consumes the Cancellable from SingleSource.Subscriber.onSubscribe(Cancellable).
    
    Returns:
    
    An object which allows for subsequent expectations to be defined.