[SUREFIRE-2266] Execute ITs in parallel

[slawekjaranowski]

We can execute tests in parallel, since we have many fork with new JVM for surefire tests should not interacted during execution.

[slawekjaranowski]

On GitHUb it will take about 1 hour instead of 2 ... on Jenkins I also see less time consumption for build

[michael-o]

Are we sure that all of the test code is thread-safe and does not share any resources on disk?

[slawekjaranowski]

Are we sure that all of the test code is thread-safe and does not share any resources on disk?

In each JVM tests are executed sequentially only one shared resources is local maven repository.

[michael-o]

Are we sure that all of the test code is thread-safe and does not share any resources on disk?

In each JVM tests are executed sequentially only one shared resources is local maven repository.

Sounds reasonable. Running that too here for testing.

[michael-o]

on "hw.model: Intel(R) Xeon(R) CPU E5-2640 v4 @ 2.40GHz" I am down to:

[WARNING] Tests run: 1042, Failures: 0, Errors: 0, Skipped: 162
[INFO]
[INFO]
[INFO] --- animal-sniffer-maven-plugin:1.24:check (signature-check) @ surefire-its ---
[INFO] Checking unresolved references to org.codehaus.mojo.signature:java18:1.0
[INFO]
[INFO] --- maven-failsafe-plugin:3.5.0:verify (default) @ surefire-its ---
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary for Apache Maven Surefire 3.5.1-SNAPSHOT:
[INFO]
[INFO] Apache Maven Surefire .............................. SUCCESS [  7.949 s]
[INFO] Surefire Shared Utils .............................. SUCCESS [  4.467 s]
[INFO] Surefire Logger API ................................ SUCCESS [  6.380 s]
[INFO] Surefire API ....................................... SUCCESS [ 25.108 s]
[INFO] Surefire Extensions API ............................ SUCCESS [  5.652 s]
[INFO] Surefire Extensions SPI ............................ SUCCESS [  1.964 s]
[INFO] Surefire Booter .................................... SUCCESS [ 18.719 s]
[INFO] Maven Surefire Test-Grouping Support ............... SUCCESS [  5.389 s]
[INFO] Surefire Providers ................................. SUCCESS [  0.823 s]
[INFO] Shared JUnit3 Provider Code ........................ SUCCESS [  3.747 s]
[INFO] Shared Java 5 Provider Base ........................ SUCCESS [  5.330 s]
[INFO] Shared JUnit4 Provider Code ........................ SUCCESS [  4.862 s]
[INFO] Shared JUnit48 Provider Code ....................... SUCCESS [  8.168 s]
[INFO] Surefire JUnit Runner .............................. SUCCESS [  4.689 s]
[INFO] Surefire JUnit4 Runner ............................. SUCCESS [  4.438 s]
[INFO] Maven Surefire Common .............................. SUCCESS [01:12 min]
[INFO] Surefire JUnitCore Runner .......................... SUCCESS [02:12 min]
[INFO] Surefire JUnit Platform Runner ..................... SUCCESS [ 10.352 s]
[INFO] Surefire TestNG Utils .............................. SUCCESS [  4.436 s]
[INFO] Surefire TestNG Runner ............................. SUCCESS [  7.624 s]
[INFO] ShadeFire JUnit3 Provider .......................... SUCCESS [  1.683 s]
[INFO] Surefire Report Parser ............................. SUCCESS [  5.522 s]
[INFO] Maven Surefire Plugin .............................. SUCCESS [  8.808 s]
[INFO] Maven Failsafe Plugin .............................. SUCCESS [ 46.672 s]
[INFO] Maven Surefire Report Plugin ....................... SUCCESS [ 15.820 s]
[INFO] Maven Surefire Integration Tests ................... SUCCESS [22:15 min]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  29:08 min
[INFO] Finished at: 2024-09-20T10:49:48+02:00
[INFO] ------------------------------------------------------------------------

very nice