Robolectric temporary files left in /tmp/

[Jens Andersen]

Hi,

we have inherited some tests leaving file of the form android-*robolectric in /tmp/. For obscure reasons we would like robolectric to use a different directory for temporaries, but cannot find documentation on how/why robolectric uses /tmp/. Is there a resource/environment setting we can set to achieve this? Is there a way to enforce robolectric to properly clean up aftter a test run?

We run the tests on Ubuntu...

Can anyone help?

Best regards

[Erich Douglass]

Hi Jens,

Robolectric does create temp files when it runs for things like db
drivers, system I/O, etc. Those files are placed under the directory
returned by System.getProperty("java.io.tmpdir") (on Linux, it'll be
under /tmp or /var/tmp). You should be able to set the value of the
java.io.tmpdir property on the JVM that's running the tests.

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[David Carver]

Any thought on using the JUnit @Rule annotation, and the TemporaryFolder class?  This would allow Robolectric to clean up after itself when running the tests.

http://junit.org/javadoc/4.9/org/junit/rules/TemporaryFolder.html

[Jake Wharton]

Rules are people writing the tests and are scoped to a test. Its innards just do the same thing as Robolectric (which is the test runner). If Robolectric isn't deleting the files it creates then that's a bug.

[David Carver]

yeah, i can verify that it doesn't as my tmp folder is littered with robolectric created temporary items.  I'm using 2.2 so not sure if 2.3 is different in this aspect.

[Jake Wharton]

Doubtful. Can you file a bug on GitHub for this? Let's destroy those files!