Prevent unit tests but allow integration tests in Maven

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I found the simplest way to skip only surefire tests is to configure surefire (but not failsafe) as follows:

<plugin>
    <artifactId>maven-surefire-plugin</artifactId>
    <version>2.14</version>
    <configuration>
        <!-- skips surefire tests without skipping failsafe tests.
                 Property value seems to magically default to false -->
        <skipTests>${skip.surefire.tests}</skipTests>
    </configuration>
</plugin>

This allows you to run mvn verify -Dskip.surefire.tests and only surefire, not failsafe, tests will be skipped; it will also run all other necessary phases including pre-integration and post-integration, and will also run the verify goal which is required to actually fail your maven build if your integration tests fail.

Note that this redefines the property used to specify that tests should be skipped, so if you supply the canonical -DskipTests=true, surefire will ignore it but failsafe will respect it, which may be unexpected, especially if you have existing builds/users specifying that flag already. A simple workaround seems to be to default skip.surefire.tests to the value of skipTests in your <properties> section of the pom:

<properties>
    <skip.surefire.tests>${skipTests}</skip.surefire.tests>
</properties>

If you need to, you could provide an analagous parameter called skip.failsafe.tests for failsafe, however I haven’t found it necessary – because unit tests usually run in an earlier phase, and if I want to run unit tests but not integration tests, I would run the test phase instead of the verify phase. Your experiences may vary!

These skip.(surefire|failsafe).tests properties should probably be integrated into surefire/failsafe code itself, but I’m not sure how much it would violate the “they’re exactly the same plugin except for 1 tiny difference” ethos.

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