delta/git.git/ci, branch test

travis-ci: use 'set -x' in 'ci/*' scripts for extra tracing output

2017-12-12T20:58:30+00:00

While the build logic was embedded in our '.travis.yml', Travis CI
used to produce a nice trace log including all commands executed in
those embedded scriptlets.  Since 657343a60 (travis-ci: move Travis CI
code into dedicated scripts, 2017-09-10), however, we only see the
name of the dedicated scripts, but not what those scripts are actually
doing, resulting in a less useful trace log.  A patch later in this
series will move setting environment variables from '.travis.yml' to
the 'ci/*' scripts, so not even those will be included in the trace
log.

Use 'set -x' in 'ci/lib-travisci.sh', which is sourced in most other
'ci/*' scripts, so we get trace log about the commands executed in all
of those scripts.

Signed-off-by: SZEDER Gábor 
Signed-off-by: Junio C Hamano

travis-ci: set GIT_TEST_HTTPD in 'ci/lib-travisci.sh'

2017-12-12T20:58:28+00:00

Commit 657343a60 (travis-ci: move Travis CI code into dedicated
scripts, 2017-09-10) converted '.travis.yml's default 'before_install'
scriptlet to the 'ci/install-dependencies.sh' script, and while doing
so moved setting GIT_TEST_HTTPD=YesPlease for the 64-bit GCC and Clang
Linux build jobs to that script.  This is wrong for two reasons:

 - The purpose of that script is, as its name suggests, to install
   dependencies, not to set any environment variables influencing
   which tests should be run (though, arguably, this was already an
   issue with the original 'before_install' scriptlet).

 - Setting the variable has no effect anymore, because that script is
   run in a separate shell process, and the variable won't be visible
   in any of the other scripts, notably in 'ci/run-tests.sh'
   responsible for, well, running the tests.

Luckily, this didn't have a negative effect on our Travis CI build
jobs, because GIT_TEST_HTTPD is a tri-state variable defaulting to
"auto" and a functioning web server was installed in those Linux build
jobs, so the httpd tests were run anyway.

Apparently the httpd tests run just fine without GIT_TEST_HTTPD being
set, therefore we could simply remove this environment variable.
However, if a bug were to creep in to change the Travis CI build
environment to run the tests as root or to not install Apache, then
the httpd tests would be skipped and the build job would still
succeed.  We would only notice if someone actually were to look
through the build job's trace log; but who would look at the trace log
of a successful build job?!

Since httpd tests are important, we do want to run them and we want to
be loudly reminded if they can't be run.  Therefore, move setting
GIT_TEST_HTTPD=YesPlease for the 64-bit GCC and Clang Linux build jobs
to 'ci/lib-travisci.sh' to ensure that the build job fails when the
httpd tests can't be run.  (We could set it in 'ci/run-tests.sh' just
as well, but it's better to keep all environment variables in one
place in 'ci/lib-travisci.sh'.)

Signed-off-by: SZEDER Gábor 
Signed-off-by: Junio C Hamano

travis-ci: move setting environment variables to 'ci/lib-travisci.sh'

2017-12-12T20:58:27+00:00

Our '.travis.yml's 'env.global' section sets a bunch of environment
variables for all build jobs, though none of them actually affects all
build jobs.  It's convenient for us, and in most cases it works just
fine, because irrelevant environment variables are simply ignored.

However, $GIT_SKIP_TESTS is an exception: it tells the test harness to
skip the two test scripts that are prone to occasional failures on
OSX, but as it's set for all build jobs those tests are not run in any
of the build jobs that are capable to run them reliably, either.

Therefore $GIT_SKIP_TESTS should only be set in the OSX build jobs,
but those build jobs are included in the build matrix implicitly (i.e.
by combining the matrix keys 'os' and 'compiler'), and there is no way
to set an environment variable only for a subset of those implicit
build jobs.  (Unless we were to add new scriptlets to '.travis.yml',
which is exactly the opposite direction that we took with commit
657343a60 (travis-ci: move Travis CI code into dedicated scripts,
2017-09-10)).

So move setting $GIT_SKIP_TESTS to 'ci/lib-travisci.sh', where it can
trivially be set only for the OSX build jobs.

Furthermore, move setting all other environment variables from
'.travis.yml' to 'ci/lib-travisci.sh', too, because a couple of
environment variables are already set there, and this way all
environment variables will be set in the same place.  All the logic
controlling our builds is already in the 'ci/*' scripts anyway, so
there is really no good reason to keep the environment variables
separately.

Signed-off-by: SZEDER Gábor 
Signed-off-by: Junio C Hamano

travis-ci: introduce a $jobname variable for 'ci/*' scripts

2017-12-12T20:58:25+00:00

A couple of 'ci/*' scripts are shared between different build jobs:
'ci/lib-travisci.sh', being a common library, is sourced from almost
every script, while 'ci/install-dependencies.sh', 'ci/run-build.sh'
and 'ci/run-tests.sh' are shared between the "regular" GCC and Clang
Linux and OSX build jobs, and the latter two scripts are used in the
GETTEXT_POISON Linux build job as well.

Our builds could benefit from these shared scripts being able to
easily tell which build job they are taking part in.  Now, it's
already quite easy to tell apart Linux vs OSX and GCC vs Clang build
jobs, but it gets trickier with all the additional Linux-based build
jobs included explicitly in the build matrix.

Unfortunately, Travis CI doesn't provide much help in this regard.
The closest we've got is the $TRAVIS_JOB_NUMBER variable, the value of
which is two dot-separated integers, where the second integer
indicates a particular build job.  While it would be possible to use
that second number to identify the build job in our shared scripts, it
doesn't seem like a good idea to rely on that:

  - Though the build job numbering sequence seems to be stable so far,
    Travis CI's documentation doesn't explicitly states that it is
    indeed stable and will remain so in the future.  And even if it
    were stable,

  - if we were to remove or insert a build job in the middle, then the
    job numbers of all subsequent build jobs would change accordingly.

So roll our own means of simple build job identification and introduce
the $jobname environment variable in our builds, setting it in the
environments of the explicitly included jobs in '.travis.yml', while
constructing one in 'ci/lib-travisci.sh' as the combination of the OS
and compiler name for the GCC and Clang Linux and OSX build jobs.  Use
$jobname instead of $TRAVIS_OS_NAME in scripts taking different
actions based on the OS and build job (when installing P4 and Git LFS
dependencies and including them in $PATH).  The following two patches
will also rely on $jobname.

Signed-off-by: SZEDER Gábor 
Signed-off-by: Junio C Hamano

travis-ci: fix running P4 and Git LFS tests in Linux build jobs

2017-11-02T02:05:28+00:00

Linux build jobs on Travis CI skip the P4 and Git LFS tests since
commit 657343a60 (travis-ci: move Travis CI code into dedicated
scripts, 2017-09-10), claiming there are no P4 or Git LFS installed.

The reason is that P4 and Git LFS binaries are not installed to a
directory in the default $PATH, but their directories are prepended to
$PATH.  This worked just fine before said commit, because $PATH was
set in a scriptlet embedded in our '.travis.yml', thus its new value
was visible during the rest of the build job.  However, after these
embedded scriptlets were moved into dedicated scripts executed in
separate shell processes, any variable set in one of those scripts is
only visible in that single script but not in any of the others.  In
this case, 'ci/install-dependencies.sh' downloads P4 and Git LFS and
modifies $PATH, but to no effect, because 'ci/run-tests.sh' only sees
Travis CI's default $PATH.

Move adjusting $PATH to 'ci/lib-travisci.sh', which is sourced in all
other 'ci/' scripts, so all those scripts will see the updated $PATH
value.

Signed-off-by: SZEDER Gábor 
Signed-off-by: Junio C Hamano

travis-ci: fix "skip_branch_tip_with_tag()" string comparison

2017-09-22T01:58:29+00:00

09f5e97 ("travis-ci: skip a branch build if equal tag is present",
2017-09-17) introduced the "skip_branch_tip_with_tag" function with
a broken string comparison. Fix it!

Reported-by: SZEDER Gábor 
Signed-off-by: Lars Schneider 
Signed-off-by: Junio C Hamano

travis: dedent a few scripts that are indented overly deeply

2017-09-11T01:18:29+00:00

Signed-off-by: Junio C Hamano

travis-ci: skip a branch build if equal tag is present

2017-09-11T01:17:53+00:00

If we push a branch and a tag pointing to the HEAD of this branch,
then Travis CI would run the build twice. This wastes resources and
slows the testing.

Add a function to detect this situation and skip the build the branch
if appropriate. Invoke this function on every build.

Helped-by: Junio C Hamano 
Signed-off-by: Lars Schneider 
Signed-off-by: Junio C Hamano

travis-ci: move Travis CI code into dedicated scripts

2017-09-11T00:54:08+00:00

Most of the Travis CI commands are in the '.travis.yml'. The yml format
does not support functions and therefore code duplication is necessary
to run commands across all builds.

To fix this, add a library for common CI functions. Move all Travis CI
code into dedicated scripts and make them call the library first.

Signed-off-by: Lars Schneider 
Signed-off-by: Junio C Hamano

Merge branch 'ls/travis-relays-for-windows-ci'

2017-05-23T04:46:04+00:00

* ls/travis-relays-for-windows-ci:
  travis-ci: retry if Git for Windows CI returns HTTP error 502 or 503
  travis-ci: handle Git for Windows CI status "failed" explicitly