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https://issues.apache.org/jira/browse/CAMEL-25720?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on CAMEL-25720 started by Claus Ibsen.
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> camel-jbang - Run the tests of camel-jbang-core in parallel
> -----------------------------------------------------------
>
> Key: CAMEL-25720
> URL: https://issues.apache.org/jira/browse/CAMEL-25720
> Project: Camel
> Issue Type: Task
> Components: camel-jbang
> Reporter: Claus Ibsen
> Assignee: Claus Ibsen
> Priority: Minor
> Fix For: 4.24.0
>
>
> The tests of camel-jbang-core run one JVM per test class, one class at a time
> ({{forkCount=1}}, {{reuseForks=false}}). Aurélien Pupier noted that in a
> {{-T1C}} build on Jenkins they take almost 20% of the time, almost alone, as
> the module comes late in the build.
> The surefire time of the module, measured locally (14 cores, JDK 25):
> ||Setup||Time||Result||
> |today: a new JVM per test class (297 classes), one at a time|399 s|all pass|
> |4 reused forks, nothing else changed|116 s|161 tests fail in 56 classes|
> |4 reused forks, with the changes below|96 s|all pass|
> *Why the tests do not run in parallel*
> * {{dsl/pom.xml}} sets {{camel.surefire.parallel=true}}, so with a reused JVM
> the classes would run at the same time in one JVM, while the CLI keeps the
> home directory in a static field ({{CommandLineHelper.useHomeDir}}).
> {{reuseForks=false}} avoids that, at the cost of a JVM per class: half of the
> classes run in less than 0.5 seconds.
> * Forks share the file system: fixed homes of the tests ({{target}},
> {{target/test-action}}, {{target/test-process}}, ...), the working directory
> of the module ({{camel run}} deletes {{.camel-jbang}}, {{camel export}}
> builds in {{.camel-jbang/work}}, a local {{camel-cli.properties}}), and the
> fixed port 2121 of the ftp service of {{camel infra run}}.
> * A test that sets no home uses the {{~/.camel}} of the developer.
> * {{ExportTest}} alone takes 95 seconds: every export builds a new
> {{KameletsCatalog}}, which scans the whole classpath, and reads each Quarkus
> platform BOM with XPath.
> *The change* (two PRs)
> # Tests: 4 reused forks, a home of their own per fork ({{user.home}} under
> {{target}}) and per test, and the tests that use the working directory or a
> fixed port ({{@UsesWorkingDirectory}}, {{@UsesFixedPort}}) run after the
> others, one class at a time, in a fork of their own.
> # Load a released kamelet catalog, and the versions of a released Quarkus
> platform BOM, once per JVM, as camel shell, the TUI, the MCP server and the
> tests run several commands in one JVM. {{ExportTest}} then runs in 44 seconds.
> *Possible follow-ups*
> * {{camel export}} with a staging directory of its own instead of
> {{.camel-jbang/work}}, so the export tests can run in the parallel forks too,
> and {{ExportTest}} split up: about 50-60 seconds.
> * No static home or work directory in the CLI (the embedding item of
> CAMEL-25400), so the tests could also run concurrently in one JVM.
> _Claude Code on behalf of davsclaus_
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