[SUREFIRE-1138] Enabling reuseForks runs all tests in series on just one fork

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.18, 2.18.1
• Fix Version/s: 2.19
• Component/s: Maven Surefire Plugin
• Environment: Apache Maven 3.0.4 (r1232337; 2012-01-17 19:44:56+1100); Java version: 1.7.0_17, vendor: Oracle Corporation; Ubuntu 12.04 LTS
• Assignee: Tibor Digana
• Reporter: Matthew Provis
• Created: 27/Jan/15 18:08
• Updated: 04/Aug/15 20:37
• Resolved: 04/Jul/15 09:06

Description

When using Surefire >= 2.18, I've encountered a problem when setting forkCount > 1 and reuseForks = true.

Expected behaviour:
Tests should run simultaneously, each on a separate fork.

Actual behaviour:
All tests run on just one fork, sequentially.

Setting reuseForks = false gives the expected behaviour.
Reverting to Surefire 2.17 also gives the expected behaviour.

I've attached a project that demonstrates the issue. Here I've created two tests, each of which prints the fork number and sleeps for 5 seconds. The total run time is 10 seconds with Surefire 2.18 and 2.18.1, but 5 seconds with version 2.17.

Issue Links

• is duplicated by: SUREFIRE-1171 Misleading documentation on forkCount with JUnit provider