Bump to SciJava common to be able to use the improved TestUtils

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Move the writeJarWithDatedFile() method into the UpdaterTestUtils

It is really a helper, not a test case in of itself...

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Remove unneeded imports

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
No need to pass the class to createTemporaryDirectory() any longer

SciJava common now lets us use a more convenient method.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Rename some temporary directories in the tests

Now that our tests consistently write into target/ rather than tmp/, we
might as well give the directories conciser names.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Bump parent pre-emptively in preparation for imminent release

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
UpdaterTestUtils: work around bug in scijava-common 2.20.0

There was a bug in 2.20.0 (which pom-imagej 2.15 references) that has been
fixed in the meantime. It only affected tests, so the bug fix is not
crucial enough to merit a full release cascade.

Let's have a work around just so we can run the tests even with the buggy
TestUtils class.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Stop overriding scijava-common.version

It is no longer needed.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Merge pull request #22 from imagej/test-utils

Update the usage of SciJava common's TestUtils