test-execute: add tests for OOMScoreAdjust

Makefile.am

@@ -1568,6 +1568,8 @@ EXTRA_DIST += \
 	test/exec-umask-default.service \
 	test/exec-privatenetwork-yes.service \
 	test/exec-environmentfile.service \
+	test/exec-oomscoreadjust-positive.service \
+	test/exec-oomscoreadjust-negative.service \
 	test/bus-policy/hello.conf \
 	test/bus-policy/methods.conf \
 	test/bus-policy/ownerships.conf \

src/test/test-execute.c

@@ -211,6 +211,11 @@ static void test_exec_privatenetwork(Manager *m) {
         test(m, "exec-privatenetwork-yes.service", 0, CLD_EXITED);
 }
 
+static void test_exec_oomscoreadjust(Manager *m) {
+        test(m, "exec-oomscoreadjust-positive.service", 0, CLD_EXITED);
+        test(m, "exec-oomscoreadjust-negative.service", 0, CLD_EXITED);
+}
+
 int main(int argc, char *argv[]) {
         test_function_t tests[] = {
                 test_exec_workingdirectory,
@@ -228,6 +233,7 @@ int main(int argc, char *argv[]) {
                 test_exec_umask,
                 test_exec_runtimedirectory,
                 test_exec_capabilityboundingset,
+                test_exec_oomscoreadjust,
                 NULL,
         };
         test_function_t *test = NULL;

test/exec-oomscoreadjust-negative.service

@@ -0,0 +1,7 @@
+[Unit]
+Description=Test for OOMScoreAdjust
+
+[Service]
+ExecStart=/bin/bash -c 'c=$(cat /proc/self/oom_score_adj); echo $c; exit $(test $c -eq -100)'
+OOMScoreAdjust=-100
+Type=oneshot

test/exec-oomscoreadjust-positive.service

@@ -0,0 +1,7 @@
+[Unit]
+Description=Test for OOMScoreAdjust
+
+[Service]
+ExecStart=/bin/bash -c 'c=$(cat /proc/self/oom_score_adj); echo $c; exit $(test $c -eq 100)'
+OOMScoreAdjust=100
+Type=oneshot