EngineExecutionListener (JUnit 5.0.0-M3 API)

```
@API(value=Experimental)
public interface EngineExecutionListener
```
Listener to be notified of test execution events by test engines.
Contrary to JUnit 4, test engines must report events not only for test descriptors that represent executable leaves but also for all intermediate containers.

Since:

1.0

See Also:

TestEngine, ExecutionRequest

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`void`	`dynamicTestRegistered(TestDescriptor testDescriptor)` Must be called when a new, dynamic `TestDescriptor` has been registered.
`void`	`executionFinished(TestDescriptor testDescriptor, TestExecutionResult testExecutionResult)` Must be called when the execution of a leaf or subtree of the test tree has finished, regardless of the outcome.
`void`	`executionSkipped(TestDescriptor testDescriptor, String reason)` Must be called when the execution of a leaf or subtree of the test tree has been skipped.
`void`	`executionStarted(TestDescriptor testDescriptor)` Must be called when the execution of a leaf or subtree of the test tree is about to be started.
`void`	`reportingEntryPublished(TestDescriptor testDescriptor, ReportEntry entry)` Can be called for any `testDescriptor` in order to publish additional information, e.g.: Output that would otherwise go to `System.out` Information about test context or test data

- Method Detail
  - dynamicTestRegistered
```
void dynamicTestRegistered(TestDescriptor testDescriptor)
```
    Must be called when a new, dynamic TestDescriptor has been registered.
    A dynamic test is a test that is not known a-priori and therefore was not present in the test tree when discovering tests.
    
    Parameters:
    
    testDescriptor - the descriptor of the newly registered test or container
  - executionSkipped
```
void executionSkipped(TestDescriptor testDescriptor,
                      String reason)
```
    Must be called when the execution of a leaf or subtree of the test tree has been skipped.
    The TestDescriptor may represent a test or a container. In the case of a container, engines must not fire any additional events for its descendants.
    A skipped test or subtree of tests must not be reported as started or finished.
    
    Parameters:
    
    testDescriptor - the descriptor of the skipped test or container
    
    reason - a human-readable message describing why the execution has been skipped
  - executionStarted
```
void executionStarted(TestDescriptor testDescriptor)
```
    Must be called when the execution of a leaf or subtree of the test tree is about to be started.
    The TestDescriptor may represent a test or a container. In the case of a container, engines have to fire additional events for its children.
    This method may only be called if the test or container has not been skipped.
    This method must be called for a container TestDescriptor before starting or skipping any of its children.
    
    Parameters:
    
    testDescriptor - the descriptor of the started test or container
  - executionFinished
```
void executionFinished(TestDescriptor testDescriptor,
                       TestExecutionResult testExecutionResult)
```
    Must be called when the execution of a leaf or subtree of the test tree has finished, regardless of the outcome.
    The TestDescriptor may represent a test or a container.
    This method may only be called if the test or container has not been skipped.
    This method must be called for a container TestIdentifier after all of its children have been skipped or have finished.
    The TestExecutionResult describes the result of the execution for the supplied testDescriptor. The result does not include or aggregate the results of its children. For example, a container with a failing test must be reported as SUCCESSFUL even if one or more of its children are reported as FAILED.
    
    Parameters:
    
    testDescriptor - the descriptor of the finished test or container
    
    testExecutionResult - the (unaggregated) result of the execution for the supplied TestDescriptor
    
    See Also:
    
    TestExecutionResult
  - reportingEntryPublished
```
void reportingEntryPublished(TestDescriptor testDescriptor,
                             ReportEntry entry)
```
    Can be called for any testDescriptor in order to publish additional information, e.g.:
    - Output that would otherwise go to System.out
    - Information about test context or test data
    The current lifecycle state of testDescriptor is not relevant; that means that reporting events can occur at all times.
    Parameters:
    
    testDescriptor - the descriptor of the test or container to which the entry belongs
    
    entry - a ReportEntry instance to be published

Interface EngineExecutionListener

Method Summary

Method Detail

dynamicTestRegistered

executionSkipped

executionStarted

executionFinished

reportingEntryPublished