EngineDiscoveryListener

```
@API(status=STABLE,
     since="1.10")
public interface EngineDiscoveryListener
```
EngineDiscoveryListener defines the API which enables a TestEngine to publish information about events that occur during test discovery.
All methods in this interface have empty default implementations. Concrete implementations may therefore override one or more of these methods to be notified of the selected events.

Since:

1.6

See Also:

EngineDiscoveryRequest.getDiscoveryListener(), org.junit.platform.launcher.LauncherDiscoveryListener

Field Summary

Fields
Modifier and Type Field Description

static EngineDiscoveryListener NOOP
No-op implementation of EngineDiscoveryListener

Method Summary

All Methods Instance Methods Default Methods
Modifier and Type	Method	Description
`default void`	`issueEncountered(UniqueId engineId, DiscoveryIssue issue)`	Called when the engine with the supplied `engineId` encountered an issue during test discovery.
`default void`	`selectorProcessed(UniqueId engineId, DiscoverySelector selector, SelectorResolutionResult result)`	Must be called after a discovery selector has been processed by a test engine.

- Field Detail
  - NOOP
```
static final EngineDiscoveryListener NOOP
```
    No-op implementation of EngineDiscoveryListener
- Method Detail
  - selectorProcessed
```
default void selectorProcessed(UniqueId engineId,
                               DiscoverySelector selector,
                               SelectorResolutionResult result)
```
    Must be called after a discovery selector has been processed by a test engine.
    Exceptions thrown by implementations of this method will cause test discovery of the current engine to be aborted.
    
    Parameters:
    
    engineId - the unique ID of the engine descriptor
    
    selector - the processed selector
    
    result - the resolution result of the supplied engine and selector
    
    See Also:
    
    SelectorResolutionResult
  - issueEncountered
```
@API(status=MAINTAINED,
     since="1.13.3")
default void issueEncountered(UniqueId engineId,
                              DiscoveryIssue issue)
```
    Called when the engine with the supplied engineId encountered an issue during test discovery.
    
    Parameters:
    
    engineId - the unique ID of the engine descriptor
    
    issue - the encountered issue
    
    Since:
    
    1.13
    
    See Also:
    
    DiscoveryIssue