These settings files currently are generated with an initial timestamp
comment line, which is not something we'd want to track in version
control. Fortunately, the contents of these files are entirely
mundane, so there should be no problem with having Buildship generate
them anew each time a developer imports WALA into Eclipse as an
existing Gradle project.
Apparently Buildship generates these when one uses Import -> Existing
Gradle Project:
<https://discuss.gradle.org/t/buildship-eclipse-plug-in-multiproject-builds/24030/5>.
We can use the Gradle "eclipse" plugin if customizations are
necessary, but my impression is that the intent is to treat ".project"
and ".classpath" as generated files, not sources to be tracked in
source control.
Unfortunately these tests are still not finding their resources
properly at test run time. I don't know why. It seems to have
something to do with how the tests instantiate and use class loaders.
I'm probably going to need expert help with this.
I was confused about the differences among:
srcDir 'foo'
srcDirs ['foo']
srcDirs = ['foo']
As it turns out, the first two append to the set of source
directories, while the last replaces this set entirely. I generally
want replacement, since WALA's current directory layout never matches
Gradle's assumed defaults.
This gives the WALA maintainers the option of doing future 1.4.5+
releases from of a pre-Gradle branch if these merged Gradle changes
turn out to be more disruptive than expected.
Previously we unpacked in one task, then installed two extra
components in two dependent tasks. However, installing extra
components modifies some files in place, effectively making those
files both inputs and outputs. That creates race conditions, and
probably interferes with task output caching. Better, then, to treat
the unpack and extra installations all as a single task whose output
is the complete Android SDK tree with all required components
installed.
The default location of DroidBench in "/tmp/DroidBench" does not work
well on Windows. So let's disable these tests until someone has time to
make that path more portable.
This URL skips over a redirect that the previous URL went through.
This URL also avoids an annoying "Invalid cookie header" warning that
the previous URL produced.
We now download and verify checksums as a single task, rather than as
two separate tasks. This simplifies other task dependencies, since we
no longer have a checksum-verified "stamp" file separate from the
download itself. Unfortunately the combined task now has a
significant amount of repeated boilerplate. I'm hoping to refactor
that all out into a custom task class, but haven't yet figured out the
details:
<https://github.com/michel-kraemer/gradle-download-task/issues/108>.
We now also use ETags to be smarter about when a fresh download is or
is not actually needed. I think there are still opportunities for
improved caching here, but this is a step in the right direction.
Big thanks to Julian for showing me where this exclusion logic lives
in the Maven configuration. There's a "**/*AndroidLibs*.java"
exclusion pattern in the top-level "pom.xml".
If future DroidBench changes include things we need, then we can
decide to move to those newer revisions. But we shouldn't allow
DroidBench to change out from under us implicitly whenever someone
commits something new to the DroidBench repository.
This lets us ditch pre-Java-8 in the Gradle build. (The official WALA
master branch recently got rid of pre-Java-8 in its Maven build.)
That, in turn, lets two "com.ibm.wala.dalvik.test" tests pass that
previously were failing. We still have two other failing tests in
that subproject, but this is definitely progress!
Our Gradle build scripts manage the entire process of downloading and
locally installing the appropriate Android SDK. That includes
automatically accepting a license. Maybe some lawyer will throw a fit
about that some day. Until then, I'd rather have a build system that
does everything needed without imposing additional manual steps on
developers.
A cleaned tree is now much closer to a pristine tree that has just
been checked out and never built. The only extra created files that
are left behind are ".gradle", "buildSrc/.gradle", and
"buildSrc/build".
Previously Maven did this, but Gradle did not. So Gradle testing
would only succeed if we'd already done a Maven build first. Now
these tests pass in a fresh tree that's never seen a Maven build.
<https://github.com/liblit/WALA/issues/5> notes that several
subprojects' tests are currently broken under Gradle. I'd still like
to be able to run non-broken tests, though. So here I'm disabling the
failing tests. The intent is to treat these exclusions as a to-do
list. We can remove exclusions as we get the corresponding tests
working. No more exclusions means
<https://github.com/liblit/WALA/issues/5> is fixed.
Ben Liblit
Ben Liblit