complete pkg/scheduler/util unit test

pkg/scheduler/util/BUILD

@@ -16,7 +16,9 @@ go_test(
     embed = [":go_default_library"],
     deps = [
         "//pkg/api/v1/pod:go_default_library",
+        "//pkg/scheduler/api:go_default_library",
         "//staging/src/k8s.io/api/core/v1:go_default_library",
+        "//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/util/diff:go_default_library",
     ],
 )

pkg/scheduler/util/utils_test.go

@@ -17,12 +17,16 @@ limitations under the License.
 package util
 
 import (
+	"fmt"
 	"reflect"
 	"testing"
+	"time"
 
-	"k8s.io/api/core/v1"
+	v1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/kubernetes/pkg/api/v1/pod"
+	"k8s.io/kubernetes/pkg/scheduler/api"
 )
 
 // TestSortableList tests SortableList by storing pods in the list and sorting
@@ -171,3 +175,92 @@ func TestGetContainerPorts(t *testing.T) {
 		}
 	}
 }
+
+func TestGetPodFullName(t *testing.T) {
+	pod := &v1.Pod{
+		ObjectMeta: metav1.ObjectMeta{
+			Namespace: "test",
+			Name:      "pod",
+		},
+	}
+	got := GetPodFullName(pod)
+	expected := fmt.Sprintf("%s_%s", pod.Name, pod.Namespace)
+	if got != expected {
+		t.Errorf("Got wrong full name, got: %s, expected: %s", got, expected)
+	}
+}
+
+func newPriorityPodWithStartTime(name string, priority int32, startTime time.Time) *v1.Pod {
+	return &v1.Pod{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: name,
+		},
+		Spec: v1.PodSpec{
+			Priority: &priority,
+		},
+		Status: v1.PodStatus{
+			StartTime: &metav1.Time{Time: startTime},
+		},
+	}
+}
+
+func TestGetEarliestPodStartTime(t *testing.T) {
+	currentTime := time.Now()
+	pod1 := newPriorityPodWithStartTime("pod1", 1, currentTime.Add(time.Second))
+	pod2 := newPriorityPodWithStartTime("pod2", 2, currentTime.Add(time.Second))
+	pod3 := newPriorityPodWithStartTime("pod3", 2, currentTime)
+	victims := &api.Victims{
+		Pods: []*v1.Pod{pod1, pod2, pod3},
+	}
+	startTime := GetEarliestPodStartTime(victims)
+	if !startTime.Equal(pod3.Status.StartTime) {
+		t.Errorf("Got wrong earliest pod start time")
+	}
+
+	pod1 = newPriorityPodWithStartTime("pod1", 2, currentTime)
+	pod2 = newPriorityPodWithStartTime("pod2", 2, currentTime.Add(time.Second))
+	pod3 = newPriorityPodWithStartTime("pod3", 2, currentTime.Add(2*time.Second))
+	victims = &api.Victims{
+		Pods: []*v1.Pod{pod1, pod2, pod3},
+	}
+	startTime = GetEarliestPodStartTime(victims)
+	if !startTime.Equal(pod1.Status.StartTime) {
+		t.Errorf("Got wrong earliest pod start time, got %v, expected %v", startTime, pod1.Status.StartTime)
+	}
+}
+
+func TestMoreImportantPod(t *testing.T) {
+	currentTime := time.Now()
+	pod1 := newPriorityPodWithStartTime("pod1", 1, currentTime)
+	pod2 := newPriorityPodWithStartTime("pod2", 2, currentTime.Add(time.Second))
+	pod3 := newPriorityPodWithStartTime("pod3", 2, currentTime)
+
+	tests := map[string]struct {
+		p1       *v1.Pod
+		p2       *v1.Pod
+		expected bool
+	}{
+		"Pod with higher priority": {
+			p1:       pod1,
+			p2:       pod2,
+			expected: false,
+		},
+		"Pod with older created time": {
+			p1:       pod2,
+			p2:       pod3,
+			expected: false,
+		},
+		"Pods with same start time": {
+			p1:       pod3,
+			p2:       pod1,
+			expected: true,
+		},
+	}
+
+	for k, v := range tests {
+		got := MoreImportantPod(v.p1, v.p2)
+		if got != v.expected {
+			t.Errorf("%s failed, expected %t but got %t", k, v.expected, got)
+		}
+	}
+}