std module smoke test

tests/Sanity/std_module-smoke/files/expected_stdout.txt

@@ -0,0 +1 @@
+Hello, world

tests/Sanity/std_module-smoke/files/hello.cpp

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+import std;
+using namespace std::literals;
+int main() {
+  std::println("Hello, {}", "world"s);
+  return 0;
+}

tests/Sanity/std_module-smoke/main.fmf

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+summary: std module smoke test
+enabled: true
+adjust+:
+  - enabled: false
+    when: distro < fedora-42
+    continue: false
+  - enabled: false
+    when: distro < rhel-11 and collection is not defined
+    continue: false
+  - enabled: false
+    when: distro < centos-stream-11 and collection is not defined
+    continue: false
+  - enabled: false
+    when: collection == gcc-toolset-14, gcc-toolset-13, devtoolset-13
+    continue: false
+contact: Vaclav Kadlcik <vkadlcik@redhat.com>
+component:
+  - gcc
+test: ${WITH_SCL:-bash} ./runtest.sh
+framework: beakerlib
+require+:
+  - gcc-c++
+duration: 10m
+extra-summary: /tools/gcc/Sanity/std_module-smoke
+extra-task: /tools/gcc/Sanity/std_module-smoke

tests/Sanity/std_module-smoke/runtest.sh

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+#!/usr/bin/env bash
+
+. /usr/share/beakerlib/beakerlib.sh || exit 1
+. "${0%/*}"/../../lib/common.sh || exit 1
+
+# Relevancy: GCC > 14
+
+GCC=${GCC:-$(type -P gcc)}
+GCC_RPM_NAME=$(rpm --qf '%{name}' -qf "$GCC")
+GXX_RPM_NAME=${GCC_RPM_NAME}-c++
+
+# shellcheck disable=SC2034
+PACKAGES="${GCC_RPM_NAME} ${GXX_RPM_NAME}"
+
+rlJournalStart
+    rlPhaseStartSetup
+        rlLogInfo "GCC=$GCC"
+        rlLogInfo "GCC_RPM_NAME=$GCC_RPM_NAME"
+        rlLogInfo "SKIP_COLLECTION_METAPACKAGE_CHECK=$SKIP_COLLECTION_METAPACKAGE_CHECK"
+
+        # We optionally need to skip checking for the presence of the metapackage
+        # because that would pull in all the dependent toolset subrpms.  We do not
+        # always want that, especially in CI.
+        _COLLECTIONS="$COLLECTIONS"
+        if ! test -z "$SKIP_COLLECTION_METAPACKAGE_CHECK"; then
+            for c in $SKIP_COLLECTION_METAPACKAGE_CHECK; do
+                rlLogInfo "ignoring metapackage check for collection $c"
+                COLLECTIONS=$(shopt -s extglob && echo "${COLLECTIONS//$c/}"); export COLLECTIONS
+            done
+        fi
+        rlLogInfo "(without skipped) COLLECTIONS=$COLLECTIONS"
+        rlAssertRpm --all
+        export COLLECTIONS="$_COLLECTIONS"
+
+        rlRun "TmpDir=\$(mktemp -d)"
+        # shellcheck disable=SC2154
+        rlRun "cp files/* $TmpDir"
+        rlRun "pushd $TmpDir"
+    rlPhaseEnd
+
+    rlPhaseStartTest
+        rlRun 'g++ -std=c++23  -fsearch-include-path bits/std.cc -fmodules-ts hello.cpp'
+        rlRun './a.out >stdout.txt 2>stderr.txt'
+        rlAssertNotDiffer stdout.txt expected_stdout.txt
+        rlAssertNotDiffer stderr.txt /dev/null
+    rlPhaseEnd
+
+    rlPhaseStartCleanup
+        rlRun popd
+        rlRun "rm -r $TmpDir"
+    rlPhaseEnd
+rlJournalPrintText
+rlJournalEnd