Add CI test

.fmf/version

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+1

plans/basic.fmf

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+summary: Basic smoke test
+discover:
+    how: fmf
+execute:
+    how: tmt

tests/build-gating.fmf

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+discover:
+  how: fmf
+exexute:
+  how: tmt

tests/simple-rpm/main.fmf

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+summary: Test build a simple RPM package to ensure package notes are working
+require:
+  - dnf
+  - dnf-plugins-core
+  - rpm-build
+test: ./runtest.sh

tests/simple-rpm/runtest.sh

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+#!/bin/bash
+
+set -ex
+
+dnf -y build-dep test.spec
+rpmbuild --define '_sourcedir .' --define '_builddir .' -bb test.spec
+dnf -y build-dep test.spec -D "_with_ld_lld 1"
+rpmbuild --with ld_lld --define '_sourcedir .' --define '_builddir .' -bb test.spec

tests/simple-rpm/test.spec

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+%bcond_with ld_lld
+
+%if %{with ld_lld}
+%global extra_ldflags -fuse-ld=lld
+%global _package_note_linker lld
+%endif
+
+Name: test
+Version: 1
+Release: 1
+Summary: Test package for checking package notes
+License: MIT
+
+BuildRequires: gcc
+# For %check
+BuildRequires: binutils
+BuildRequires: jq
+%if %{with ld_lld}
+BuildRequires: lld
+%endif
+
+%description
+Test package for checking package notes
+
+%build
+echo 'int main(int argc, char **argv) { return 0; }' | %{build_cc} ${CFLAGS} -x c -c - -o main.o
+%{build_cc} ${LDFLAGS} %{?extra_ldflags} main.o -o main
+
+# Package notes not supported with lld, so the the build succeeding is enough.
+%if %{without ld_lld}
+%check
+# avoid any attempt to access the network by readelf
+export DEBUGINFOD_URLS=
+
+readelf --notes ./main | sed -r -n 's/.*Packaging Metadata: (.*)/\1/p' | tee package-note.text
+
+test "`cat package-note.text | jq -r '[.type,.name,.version,.architecture]|join(" ")'`" == "rpm %{name} %{version}-%{release} %{_arch}"
+%endif
+
+%changelog
+* Sat Aug  6 2022 Jane Doe <jane@example.org> - 1-1
+- Dummy