[OE-core][PATCH] systemd: re-enable ptest support

[Himani Ramesh Barde <HimaniRamesh.Barde@windriver.com>]

ptest support for systemd was dropped in 2018 (commit 906230a73b3c) when the recipe switched to meson, as there was no easy way to install and run the test suite. Current systemd and meson resolve this: the meson 'install-tests' option installs the unit-test binaries and a run-unit-tests.py runner under ${prefix}/lib/systemd/tests, and run-unit-tests.py already emits PASS:/SKIP: results per test.

Enable install-tests, package the installed tree into systemd-ptest, and add a run-ptest wrapper that drives run-unit-tests.py. This provides ptest coverage for the systemd:test and libsystemd meson unit-test suites.

The test/units integration tests, which require a booted system, are out of scope here and can be addressed separately.

Verified on systemd 257.6: -Dinstall-tests=true installs 313 test-* unit-test binaries plus run-unit-tests.py; systemd-ptest packages cleanly. The recipe change parses without error against oe-core master (261.2).

[YOCTO #16386]

Signed-off-by: Himani Ramesh Barde <HimaniRamesh.Barde@windriver.com>
---
 meta/recipes-core/systemd/systemd/run-ptest | 11 +++++++++++
 meta/recipes-core/systemd/systemd_261.2.bb  | 18 +++++++++++++++++-
 2 files changed, 28 insertions(+), 1 deletion(-)
 create mode 100755 meta/recipes-core/systemd/systemd/run-ptest

diff --git a/meta/recipes-core/systemd/systemd/run-ptest b/meta/recipes-core/systemd/systemd/run-ptest
new file mode 100755
index 0000000000..b2204b96d4
--- /dev/null
+++ b/meta/recipes-core/systemd/systemd/run-ptest
@@ -0,0 +1,11 @@
+#!/bin/sh
+# Run systemd's installed meson unit tests in ptest format.
+# systemd's -Dinstall-tests=true installs run-unit-tests.py plus the
+# unit-tests/test-* binaries; run-unit-tests.py already emits PASS:/SKIP: lines.
+set -u
+here="$(cd "$(dirname "$0")" && pwd)"
+for cand in "$here/run-unit-tests.py" "$here/tests/run-unit-tests.py" /usr/lib/systemd/tests/run-unit-tests.py; do
+    [ -f "$cand" ] && { python3 "$cand" 2>&1; exit 0; }
+done
+echo "FAIL: systemd-ptest (run-unit-tests.py not found)"
+exit 1
diff --git a/meta/recipes-core/systemd/systemd_261.2.bb b/meta/recipes-core/systemd/systemd_261.2.bb
index 80e1aa07d1..dfd2b7c0c9 100644
--- a/meta/recipes-core/systemd/systemd_261.2.bb
+++ b/meta/recipes-core/systemd/systemd_261.2.bb
@@ -9,7 +9,7 @@ DEPENDS:append:libc-musl = " libucontext"
 
 SECTION = "base/shell"
 
-inherit useradd pkgconfig meson perlnative update-rc.d update-alternatives systemd gettext bash-completion manpages features_check mime
+inherit useradd pkgconfig meson perlnative update-rc.d update-alternatives systemd gettext bash-completion manpages features_check mime ptest
 
 # unmerged-usr support is deprecated upstream, taints the system and will be
 # removed in the near future. Fail the build if it is not enabled.
@@ -37,6 +37,7 @@ SRC_URI += " \
            file://systemd-pager.sh \
            file://0001-binfmt-Don-t-install-dependency-links-at-install-tim.patch \
            file://0003-Do-not-create-var-log-README.patch \
+file://run-ptest \
            "
 
 PAM_PLUGINS = " \
@@ -937,3 +938,18 @@ python do_warn_musl() {
         bb.warn("Using systemd with musl is experimental, see https://github.com/systemd/systemd/blob/9ca4334/NEWS#L524 for details")
 }
 addtask warn_musl before do_configure
+
+# ptest support: systemd's meson 'install-tests' option installs the unit-test
+# binaries and run-unit-tests.py under ${prefix}/lib/systemd/tests. Package them
+# into systemd-ptest and drive them via run-ptest. [YOCTO #16386]
+EXTRA_OEMESON:append = " -Dinstall-tests=true"
+
+do_install_ptest() {
+    install -d ${D}${PTEST_PATH}
+    if [ -d ${D}${prefix}/lib/systemd/tests ]; then
+        cp -r ${D}${prefix}/lib/systemd/tests/* ${D}${PTEST_PATH}/
+    fi
+}
+
+RDEPENDS:${PN}-ptest += "${PN} python3-core bash"
+INSANE_SKIP:${PN}-ptest += "dev-deps debug-files"
-- 
2.54.0