add GetPodResource test

VERSION

@@ -1 +1 @@
-18.11.23
+18.11.28

cluster/calcium/resource.go

@@ -49,12 +49,12 @@ func (c *Calcium) PodResource(ctx context.Context, podname string) (*types.PodRe
 		for i, v := range cpumap {
 			if node.InitCPU[i] != v {
 				r.Diff[node.Name] = false
-				r.Detail[node.Name] += fmt.Sprintf("cpu %s now %d", i, v)
+				r.Detail[node.Name] += fmt.Sprintf("cpu %s now %d ", i, v)
 			}
 		}
 		if memory+node.MemCap != node.InitMemCap {
 			r.Diff[node.Name] = false
-			r.Detail[node.Name] += fmt.Sprintf("mem now %d", node.InitMemCap-(memory+node.MemCap))
+			r.Detail[node.Name] += fmt.Sprintf("mem now %d ", node.InitMemCap-(memory+node.MemCap))
 		}
 
 	}

cluster/calcium/resource_test.go

@@ -16,6 +16,50 @@ import (
 	"github.com/projecteru2/core/types"
 )
 
+func TestPodResource(t *testing.T) {
+	c := NewTestCluster()
+	ctx := context.Background()
+	podname := "testpod"
+	nodename := "testnode"
+	store := &storemocks.Store{}
+	c.store = store
+	// failed by GetNodesByPod
+	store.On("GetNodesByPod", mock.Anything, mock.Anything).Return(nil, types.ErrBadPodType).Once()
+	_, err := c.PodResource(ctx, podname)
+	assert.Error(t, err)
+	node := &types.Node{
+		Name:       nodename,
+		CPU:        types.CPUMap{"0": 0, "1": 10},
+		MemCap:     2,
+		InitCPU:    types.CPUMap{"0": 100, "1": 100},
+		InitMemCap: 6,
+	}
+	store.On("GetNodesByPod", mock.Anything, mock.Anything).Return([]*types.Node{node}, nil)
+	// failed by ListNodeContainers
+	store.On("ListNodeContainers", mock.Anything, mock.Anything).Return(nil, types.ErrBadPodType).Once()
+	_, err = c.PodResource(ctx, podname)
+	assert.Error(t, err)
+	containers := []*types.Container{
+		&types.Container{
+			Memory: 1,
+			CPU:    types.CPUMap{"0": 100, "1": 30},
+			Quota:  1.3,
+		},
+		&types.Container{
+			Memory: 2,
+			CPU:    types.CPUMap{"1": 50},
+			Quota:  0.5,
+		},
+	}
+	store.On("ListNodeContainers", mock.Anything, mock.Anything).Return(containers, nil)
+	// success
+	r, err := c.PodResource(ctx, podname)
+	assert.NoError(t, err)
+	assert.Len(t, r.CPUPercent, 1)
+	assert.Len(t, r.MEMPercent, 1)
+	assert.False(t, r.Diff[nodename])
+}
+
 func TestAllocResource(t *testing.T) {
 	c := NewTestCluster()
 	ctx := context.Background()