tests: move tests to tests/ directory and give the user cgroup perms

Signed-off-by: Levente Kurusa <lkurusa@acm.org>

tests/pids.rs

@@ -0,0 +1,39 @@
+//! Integration tests about the pids subsystem
+extern crate cgroups;
+
+use cgroups::{Cgroup, Resources, PidResources};
+use cgroups::pid::{PidController, PidMax};
+
+#[test]
+fn create_and_delete_cgroup() {
+    let hier = cgroups::hierarchies::V1::new();
+    let cg = Cgroup::new(&hier, String::from("create_and_delete_cgroup"));
+    {
+        let pidcontroller: &PidController = cg.controller_of().unwrap();
+        pidcontroller.set_pid_max(PidMax::Value(1337));
+        assert_eq!(pidcontroller.get_pid_max(), Some(PidMax::Value(1337)));
+    }
+    cg.delete();
+}
+
+#[test]
+fn test_pid_pids_current_is_zero() {
+    let hier = cgroups::hierarchies::V1::new();
+    let cg = Cgroup::new(&hier, String::from("test_pid_pids_current_is_zero"));
+    {
+        let pidcontroller: &PidController = cg.controller_of().unwrap();
+        assert_eq!(pidcontroller.get_pid_current(), 0);
+    }
+    cg.delete();
+}
+
+#[test]
+fn test_pid_pids_events_is_zero() {
+    let hier = cgroups::hierarchies::V1::new();
+    let cg = Cgroup::new(&hier, String::from("test_pid_pids_events_is_zero"));
+    {
+        let pidcontroller: &PidController = cg.controller_of().unwrap();
+        assert_eq!(pidcontroller.get_pid_events(), 0);
+    }
+    cg.delete();
+}