Add test for omrsysinfo_get_cgroup_subsystem_list

fvtest/porttest/si.cpp

@@ -2379,6 +2379,7 @@ class CgroupTest : public ::testing::Test {
 	static bool isV2Available;
 	static std::string memCgroup;
 	static std::string cpuCgroup;
+	static std::string cpusetCgroup;
 	const static std::map<std::string, uint64_t> supportedSubsystems;
 	constexpr static char CGROUP_MOUNT_POINT[] = "/sys/fs/cgroup";
 	static uint64_t available;
@@ -2403,6 +2404,7 @@ class CgroupTest : public ::testing::Test {
 
 				portTestEnv->log(LEVEL_ERROR, "/proc/self/cgroup line:\n  %s\n", line.c_str());
 				ASSERT_TRUE(std::regex_match(line, sm, v1Regex));
+				ASSERT_EQ(sm[2].str().at(0), '/');
 				if (0 != sm[1].length()) {
 					std::stringstream ss(sm[1].str());
 					std::vector<std::string> subsystems;
@@ -2423,6 +2425,11 @@ class CgroupTest : public ::testing::Test {
 							case OMR_CGROUP_SUBSYSTEM_MEMORY:
 								memCgroup = sm[2].str();
 								break;
+							case OMR_CGROUP_SUBSYSTEM_CPUSET:
+								cpusetCgroup = sm[2].str();
+								break;
+							default:
+								FAIL() << "Unsupported subsystem";
 							}
 						}
 					}
@@ -2438,6 +2445,7 @@ class CgroupTest : public ::testing::Test {
 
 			cpuCgroup = sm[1].str();
 			memCgroup = cpuCgroup;
+			cpusetCgroup = cpuCgroup;
 			ASSERT_EQ(cpuCgroup.at(0), '/');
 			std::ifstream controllerFile(CGROUP_MOUNT_POINT + cpuCgroup + "/cgroup.controllers");
 			std::string s;
@@ -2496,6 +2504,7 @@ bool CgroupTest::isV1Available = false;
 bool CgroupTest::isV2Available = false;
 std::string CgroupTest::memCgroup;
 std::string CgroupTest::cpuCgroup;
+std::string CgroupTest::cpusetCgroup;
 const std::map<std::string, uint64_t> CgroupTest::supportedSubsystems = {
 	{"cpu", OMR_CGROUP_SUBSYSTEM_CPU},
 	{"memory", OMR_CGROUP_SUBSYSTEM_MEMORY},
@@ -2588,7 +2597,7 @@ TEST_F(CgroupTest, sysinfo_cgroup_are_subsystems_available)
 			CgroupTest::available & (OMR_CGROUP_SUBSYSTEM_ALL));
 #else /* defined(LINUX) */
 	if (0 != omrsysinfo_cgroup_are_subsystems_available(OMR_CGROUP_SUBSYSTEM_ALL)) {
-		outputErrorMessage(PORTTEST_ERROR_ARGS, "omrsysinfo_cgroup_are_subsystems_available returned nonzero on nonlinux\n");
+		outputErrorMessage(PORTTEST_ERROR_ARGS, "omrsysinfo_cgroup_are_subsystems_available returned nonzero on non-Linux\n");
 	}
 #endif /* defined(LINUX) */
 
@@ -2701,6 +2710,54 @@ TEST(PortSysinfoTest, sysinfo_cgroup_get_memlimit)
 	return;
 }
 
+/**
+ * Test omrsysinfo_get_cgroup_subsystem_list.
+ */
+TEST_F(CgroupTest, sysinfo_get_cgroup_subsystem_list)
+{
+	OMRPORT_ACCESS_FROM_OMRPORT(portTestEnv->getPortLibrary());
+	const char *testName = "omrsysinfo_get_cgroup_subsystem_list";
+
+	reportTestEntry(OMRPORTLIB, testName);
+
+#if defined(LINUX)
+	OMRCgroupEntry *entries = omrsysinfo_get_cgroup_subsystem_list();
+	OMRCgroupEntry *temp = entries;
+
+	if (NULL == temp) {
+		EXPECT_EQ(CgroupTest::available, (uint64_t)0);
+	} else {
+		do {
+			EXPECT_EQ(CgroupTest::available & temp->flag, temp->flag);
+			switch(temp->flag) {
+			case OMR_CGROUP_SUBSYSTEM_CPU:
+				EXPECT_EQ(temp->cgroup, cpuCgroup);
+				EXPECT_STREQ(temp->subsystem, "cpu");
+				break;
+			case OMR_CGROUP_SUBSYSTEM_MEMORY:
+				EXPECT_EQ(temp->cgroup, memCgroup);
+				EXPECT_STREQ(temp->subsystem, "memory");
+				break;
+			case OMR_CGROUP_SUBSYSTEM_CPUSET:
+				EXPECT_EQ(temp->cgroup, cpusetCgroup);
+				EXPECT_STREQ(temp->subsystem, "cpuset");
+				break;
+			default:
+				FAIL() << "Unsupported subsystem";
+			}
+			temp = temp->next;
+		} while (temp != entries);
+	}
+#else /* defined(LINUX) */
+	if (NULL != omrsysinfo_get_cgroup_subsystem_list()) {
+		outputErrorMessage(PORTTEST_ERROR_ARGS, "omrsysinfo_get_cgroup_subsystem_list returned not null on non-Linux\n");
+	}
+#endif /* defined(LINUX) */
+
+	reportTestExit(OMRPORTLIB, testName);
+	return;
+}
+
 /**
  * Test GetProcessorDescription.
  */