From: Sudhir Kumar <skumar@linux.vnet.ibm.com>

libcgroup: libcgroup testcases for cgroup_attach_task()

This patch adds 3 testcases for libcgroup API cgroup_attach_task() testing. The API
is called under  the same but two conditions(FS_MOUNTED=0/1) and return
values are checked. For FS_MOUNTED=1 the API is first called without
intializing ie without calling cgroup_init(), and then after cg_init(). Each time
the null cgroup is passed. The task is checked if it exists under the root
group's tasks file.
The 4th testcase calls cgroup_attach_task_pid() with an invalid pid.

Testcases for FS_MOUNTED=2 have to be added.


Signed-off-by: Sudhir Kumar <skumar@linux.vnet.ibm.com>
Signed-off-by: Dhaval Giani <dhaval@linux.vnet.ibm.com>


git-svn-id: https://libcg.svn.sourceforge.net/svnroot/libcg/trunk@89 4f4bb910-9a46-0410-90c8-c897d4f1cd53

1 files changed, 84 insertions, 2 deletions

diff --git a/tests/libcgrouptest01.c b/tests/libcgrouptest01.c
index 05bf9d8..394c883 100644
--- a/tests/libcgrouptest01.c
+++ b/tests/libcgrouptest01.c
@@ -18,7 +18,11 @@
 
 int main(int argc, char *argv[])
 {
-	int fs_mounted, retval, i = 0;
+	int fs_mounted, retval, i = 0, pass = 0;
+	pid_t curr_tid, tid;
+	struct cgroup *nullcgroup = NULL;
+	FILE *file;
+	char mountpoint[FILENAME_MAX], tasksfile[FILENAME_MAX];
 
 	if ((argc < 3) || (atoi(argv[1]) < 0)) {
 		printf("ERROR: Wrong no of parameters recieved from script\n");
@@ -26,6 +30,9 @@ int main(int argc, char *argv[])
 		exit(1);
 	}
 	fs_mounted = atoi(argv[1]);
+	strcpy(mountpoint, argv[2]);
+	dbg("C:DBG: fs_mounted as recieved from script=%d\n", fs_mounted);
+	dbg("C:DBG: mountpoint as recieved from script=%s\n", mountpoint);
 
 	/*
 	 * Testsets: Testcases are broadly devided into 3 categories based on
@@ -50,12 +57,38 @@ int main(int argc, char *argv[])
 			printf("Test[0:%2d]\tFAIL: cgroup_init() retval= %d:\n",\
 								 ++i, retval);
 
+		/*
+		 * Test02: call cgroup_attach_task() with null group
+		 * Exp outcome: error non zero return value
+		 */
+		retval = cgroup_attach_task(nullcgroup);
+		if (retval != 0)
+			printf("Test[0:%2d]\tPASS: cgroup_attach_task() ret: %d\n",\
+								 ++i, retval);
+		else
+			printf("Test[0:%2d]\tFAIL: cgroup_attach_task() ret: %d\n",\
+								 ++i, retval);
+
 		break;
 
 	case FS_MOUNTED:
 
 		/*
-		 * Test01: call cgroup_init() and check return values
+		 * Test01: call cgroup_attach_task() with null group
+		 * without calling cgroup_inti(). We can check other apis too.
+		 * Exp outcome: error ECGROUPNOTINITIALIZED
+		 */
+		retval = cgroup_attach_task(nullcgroup);
+		if (retval == ECGROUPNOTINITIALIZED)
+			printf("Test[1:%2d]\tPASS: cgroup_attach_task() ret: %d\n",\
+								 ++i, retval);
+		else
+			printf("Test[1:%2d]\tFAIL: cgroup_attach_task() ret: %d\n",\
+								 ++i, retval);
+
+
+		/*
+		 * Test02: call cgroup_init() and check return values
 		 * Exp outcome:  no error. return value 0
 		 */
 
@@ -67,6 +100,55 @@ int main(int argc, char *argv[])
 			printf("Test[1:%2d]\tFAIL: cgroup_init() retval= %d:\n",\
 								 ++i, retval);
 
+		/*
+		 * Test03: Call cgroup_attach_task() with null group and check if
+		 * return values are correct. If yes check if task exists in
+		 * root group tasks file
+		 * TODO: This test needs some modification in script
+		 * Exp outcome: current task should be attached to root group
+		 */
+		retval = cgroup_attach_task(nullcgroup);
+		if (retval == 0) {
+			strncpy(tasksfile, mountpoint, sizeof(mountpoint));
+			strcat(tasksfile, "/tasks");
+			file = fopen(tasksfile, "r");
+			if (!file) {
+				printf("ERROR: in opening %s\n", tasksfile);
+				return -1;
+			}
+
+			curr_tid = cgrouptest_gettid();
+			while (!feof(file)) {
+				fscanf(file, "%u", &tid);
+				if (tid == curr_tid) {
+					pass = 1;
+					break;
+				}
+			}
+			if (pass)
+				printf("Test[1:%2d]\tPASS: Task found in %s\n",\
+							 ++i, tasksfile);
+			else
+				printf("Test[1:%2d]\tFAIL: Task not found in %s\n",\
+								 ++i, tasksfile);
+		} else {
+			printf("Test[1:%2d]\tFAIL: cgroup_attach_task() ret: %d\n",\
+								 ++i, retval);
+		}
+
+		/*
+		 * Test04: Call cgroup_attach_task_pid() with null group
+		 * and invalid pid
+		 * Exp outcome: error
+		 */
+		retval = cgroup_attach_task_pid(nullcgroup, 0);
+		if (retval != 0)
+			printf("Test[1:%2d]\tPASS: cgroup_attach_task_pid() ret: %d\n",\
+								 ++i, retval);
+		else
+			printf("Test[1:%2d]\tFAIL: cgroup_attach_task_pid() ret: %d\n",\
+								 ++i, retval);
+
 		break;
 
 	case FS_MULTI_MOUNTED: