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https://jira.codehaus.org/browse/SUREFIRE-865?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Kristian Rosenvold closed SUREFIRE-865.
---------------------------------------
Resolution: Fixed
Fix Version/s: 2.13
Assignee: Kristian Rosenvold
Fixed with the ClassDemarcatingRunner issue
> surefire 2.12 with parallel=methods does not execute junit 4.7+ tests in
> parallel
> ---------------------------------------------------------------------------------
>
> Key: SUREFIRE-865
> URL: https://jira.codehaus.org/browse/SUREFIRE-865
> Project: Maven Surefire
> Issue Type: Bug
> Components: Junit 4.7+ (parallel) support
> Environment: Maven 2.2.1 and 3.0.4, JDK6, JUnit 4.10
> Reporter: Neil Hartner
> Assignee: Kristian Rosenvold
> Fix For: 2.13
>
> Attachments: surefire-parallel-junit.zip
>
>
> parallel=methods with junit does not appear to parallelize junit test
> execution in surefire 2.12 or 2.13-SNAPSHOT. parallel=classes works with
> 2.12, but parallel=methods only works for me in earlier versions of surefire
> like 2.10 and 2.11. I saw an earlier bug related to TestSuite classes but my
> tests are not using @Test. I have attached a very simple maven project that
> demonstrates this issue. It has 2 test classes with 2 tests each where each
> test calls Thread.sleep() for 4-8 seconds. Here are a few build commands to
> reproduce the bug:
> First run: mvn test -Dsurefire-version=2.11 -Dparallel=methods
> Notice that in 2.11 the tests execute in two threads and in parallel. Total
> execution time on my box was 15s.
> Then run: mvn test -Dsurefire-version=2.12 -Dparallel=methods
> Notice that in 2.12 the tests execute in the same main thread. Total
> execution time on my box was 26s.
> Finally run: mvn test -Dsurefire-version=2.12 -Dparallel=classes
> Notice that parallel=classes does correctly execute tests in two threads and
> in parallel. Total execution time on my box was 17s.
> ---
> Here is output from my machine when running these commands...
> Run:
> mvn test -Dsurefire-version=2.11 -Dparallel=methods
> OUTPUT:
> Concurrency config is parallel='methods', perCoreThreadCount=true,
> threadCount=2, useUnlimitedThreads=false
> Running com.overstock.BarTest
> Fri May 11 11:26:34 MDT 2012: BarTest calling sleep(5) in thread
> pool-1-thread-2
> Fri May 11 11:26:34 MDT 2012: BarTest calling sleep(4) in thread
> pool-1-thread-1
> Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.033 sec
> Running com.overstock.FooTest
> Fri May 11 11:26:39 MDT 2012: FooTest calling sleep(7) in thread
> pool-1-thread-3
> Fri May 11 11:26:39 MDT 2012: FooTest calling sleep(8) in thread
> pool-1-thread-4
> Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 15.008 sec
> Results :
> Tests run: 4, Failures: 0, Errors: 0, Skipped: 0
> [INFO]
> ------------------------------------------------------------------------
> [INFO] BUILD SUCCESSFUL
> [INFO]
> ------------------------------------------------------------------------
> [INFO] Total time: 15 seconds
> Run:
> mvn test -Dsurefire-version=2.12 -Dparallel=methods
> OUTPUT:
> Concurrency config is parallel='methods', perCoreThreadCount=true,
> threadCount=2, useUnlimitedThreads=false
> Running com.overstock.BarTest
> Fri May 11 11:25:53 MDT 2012: BarTest calling sleep(4) in thread main
> Fri May 11 11:25:58 MDT 2012: BarTest calling sleep(5) in thread main
> Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.017 sec
> Running com.overstock.FooTest
> Fri May 11 11:26:03 MDT 2012: FooTest calling sleep(7) in thread main
> Fri May 11 11:26:10 MDT 2012: FooTest calling sleep(8) in thread main
> Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 15.003 sec
> Results :
> Tests run: 4, Failures: 0, Errors: 0, Skipped: 0
> [INFO]
> ------------------------------------------------------------------------
> [INFO] BUILD SUCCESSFUL
> [INFO]
> ------------------------------------------------------------------------
> [INFO] Total time: 26 seconds
> Run:
> mvn test -Dsurefire-version=2.12 -Dparallel=classes
> OUTPUT:
> Concurrency config is parallel='classes', perCoreThreadCount=true,
> threadCount=2, useUnlimitedThreads=false
> Running com.overstock.BarTest
> Fri May 11 11:27:38 MDT 2012: BarTest calling sleep(4) in thread
> pool-1-thread-1
> Fri May 11 11:27:42 MDT 2012: BarTest calling sleep(5) in thread
> pool-1-thread-1
> Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.016 sec
> Running com.overstock.FooTest
> Fri May 11 11:27:38 MDT 2012: FooTest calling sleep(7) in thread
> pool-1-thread-2
> Fri May 11 11:27:45 MDT 2012: FooTest calling sleep(8) in thread
> pool-1-thread-2
> Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 15.016 sec
> Results :
> Tests run: 4, Failures: 0, Errors: 0, Skipped: 0
> [INFO]
> ------------------------------------------------------------------------
> [INFO] BUILD SUCCESSFUL
> [INFO]
> ------------------------------------------------------------------------
> [INFO] Total time: 17 seconds
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