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xcat-core/xCAT-test/unit
Daniel Hilst 1f376f5dd0 refactor(build): read and write files through File::Slurper
The two builders read and wrote files three different ways. buildrpms.pl used
File::Slurper, builddebs.pl opened and closed handles inline, and BuildUtils.pm
carried its own read_file/write_file pair to avoid the dependency. The result
was that the same operation was spelled differently in each place, and the
Version stamp was read by hand in both builders: buildrpms.pl chomped it ten
lines after reading it, which is how a stamp keeps a trailing newline nobody
notices until it reaches a package name.

Drop the hand-rolled pair and use File::Slurper throughout, and add
BuildUtils::read_line for the one-line Version and Release stamps -- it strips
the newline at the point of reading and reports an absent file as undef, which
is what builddebs.pl's fallback to snap_release needs.

File::Slurper is already required by buildrpms.pl and is already in the CI
package list, so this adds no new build-host prerequisite. The lock file still
uses a raw open: flock needs a real handle.

Behaviour note: Version is now read as its first line rather than the whole
file with the final newline removed. For the one-line file it is, these are the
same; a malformed multi-line Version now yields its first line instead of an
embedded newline.

Signed-off-by: Daniel Hilst <392820+dhilst@users.noreply.github.com>
2026-09-02 12:39:45 -03:00
..

xCAT-test/unit

Unit tests. These run against the source tree only -- no xCAT installation, no running daemons, no management node.

They are executed on every pull request by the xcat_test GitHub Actions workflow, which calls run_unit_tests() in github_action_xcat_test.pl:

prove -r xCAT-test/unit

You can run exactly the same thing from a clean checkout:

cd <xcat-core checkout>
prove -r xCAT-test/unit

What belongs here

A test belongs in unit/ when everything it needs is in the checkout: plugin and library sources, kickstart/preseed/subiquity templates, postscripts, packaging metadata. Such a test asserts on rendered output or module logic and reaches the repository root through FindBin:

use FindBin;
use lib "$FindBin::Bin/../../perl-xCAT";
use lib "$FindBin::Bin/../../xCAT-server/lib/perl";

Because of those FindBin paths the tests only work from a source tree. The copy installed under /opt/xcat/share/xcat/tools/autotest/unit is not a substitute -- ../.. resolves to /opt/xcat/share/xcat/tools there and the tests die or silently skip. The CI takes a copy of the checkout before the build for this reason; see preserve_source_tree().

What does not belong here

Anything that needs an installed xCAT, a populated /install, a real service binary or a live daemon. Those go in ../integration and run on a management node through xcattest. Both suites run on every pull request -- the workflow installs xCAT on the runner and then runs the ci_test cases against it -- so putting a test in integration/ does not cost it CI coverage. What differs is what each suite is allowed to depend on, and that unit tests also run standalone from a bare checkout with no xCAT at all.

The distinction matters because a test that needs an absent environment does not fail -- it calls plan skip_all and reports as skipped. A handful of those in a suite of several hundred assertions is easy to stop reading. Keeping the two kinds in separate directories means a skip in unit/ is a real signal rather than routine noise.

Guarding on a source file, on the other hand, is fine and common here:

plan skip_all => "compute.subiquity.tmpl not found" unless -f $tmpl_path;

That guard never fires when the tree is intact.