GitHub user dipak-pawar opened a pull request:
https://github.com/apache/maven-surefire/pull/169
[SUREFIRE-1405] Allows user to extend RunOrder & RunOrderCalculator
* All supported runOrder options are hardCoded in RunOrder -
https://github.com/apache/maven-surefire/blob/master/surefire-api/src/main/java/org/apache/maven/surefire/util/RunOrder.java#L109
* With this implementation user can implement his own runOrder & it's
respective RunOrderCalculator.
Fixes: https://issues.apache.org/jira/browse/SUREFIRE-1405
**Implementation Details**
**How to create new RunOrder?**
To create new `runOrder` user has to implement `RunOrder` interface.
```java
public class YourRunOrder implements RunOrder
{
@Override
public String getName()
{
return "runOrderName";
}
@Override
public List<Class<?>> orderTestClasses( Collection<Class<?>>
scannedClasses,
RunOrderParameters
runOrderParameters, int threadCount )
{
// Add logic to order test classes for this runOrder.
return testClasses;
}
}
```
**How to define custom RunOrderCalculator?**
Implement `RunOrderCalculator` interface with logic you want to order test
classes.
e.g.
```java
public class YourRunOrderCalculator implements RunOrderCalculator {
private final RunOrderParameters runOrderParameters;
private final int threadCount;
private final RunOrder[] runOrder;
public YourRunOrderCalculator(RunOrderParameters runOrderParameters,
int threadCount) {
this.runOrder = runOrderParameters.getRunOrders();
this.runOrderParameters = runOrderParameters;
this.threadCount = threadCount;
}
// Add your logic to order test classes.
@Override
public TestsToRun orderTestClasses(TestsToRun scannedClasses) {
List<Class<?>> testClasses = new ArrayList<Class<?>>( 512 );
for ( Class<?> scannedClass : scannedClasses )
{
testClasses.add( scannedClass );
}
final Collection<Class<?>> classes =
runOrder[0].orderTestClasses(testClasses, runOrderParameters, threadCount);
return new TestsToRun(new LinkedHashSet<>(classes));
}
}
```
**How to tell surefire to use custom `RunOrder` & `RunOrderCalculator`?**
We have `RunOrderProvider` spi to overwrite default runOrders &
`RunOrderCalculator` provided by surefire.
You need to registrar impl of RunOrderProvider in the file named
`META-INF/services/org.apache.maven.plugin.surefire.runorder.spi.RunOrderProvider`
in main resources.
File should contain fully qualified name of RunOrderProvider impl.
e.g.
`com.surefire.YourRunOrderProviderImpl`
Implementation of YourRunOrderProviderImpl is as follows:
```java
public class YourRunOrderProviderImpl implements RunOrderProvider
{
@Override
public Collection<RunOrder> getRunOrders()
{
// here you can give all default runorders provided by surefire along
with custom runorder created above.
return Arrays.asList( ALPHABETICAL, FILESYSTEM, HOURLY,
RANDOM, REVERSE_ALPHABETICAL, BALANCED, FAILEDFIRST, new
YourRunOrder() );
}
@Override
public Integer priority()
{
return 1;
}
@Override
public RunOrderCalculator createRunOrderCalculator( RunOrderParameters
runOrderParameters, int threadCount )
{
return new YourRunOrderCalculator( runOrderParameters, threadCount
);
}
@Override
public Collection<RunOrder> defaultRunOrder()
{
return Collections.singletonList( FILESYSTEM );
}
}
```
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/dipak-pawar/maven-surefire
surefire_improvement
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/maven-surefire/pull/169.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #169
----
commit 6735b1ef750c3bcd613d5998a313e5007dc37349
Author: Dipak Pawar <dpa...@redhat.com>
Date: 2017-08-23T15:33:08Z
[SUREFIRE-1405] Allows user to extend RunOrder & RunOrderCalculator
----
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