CPU Manager - Updates to unit tests:

- Where previously we called manager.AddContainer(), we now call both
manager.Allocate() and manager.AddContainer().
- Some test cases now have two expected errors. One each
from Allocate() and AddContainer(). Existing outcomes are unchanged.

pkg/kubelet/cm/cpumanager/cpu_manager_test.go

@@ -227,14 +227,16 @@ func TestCPUManagerAdd(t *testing.T) {
 		updateErr          error
 		policy             Policy
 		expCPUSet          cpuset.CPUSet
-		expErr      error
+		expAllocateErr     error
+		expAddContainerErr error
 	}{
 		{
 			description:        "cpu manager add - no error",
 			updateErr:          nil,
 			policy:             testPolicy,
 			expCPUSet:          cpuset.NewCPUSet(3, 4),
-			expErr:      nil,
+			expAllocateErr:     nil,
+			expAddContainerErr: nil,
 		},
 		{
 			description: "cpu manager add - policy add container error",
@@ -243,14 +245,16 @@ func TestCPUManagerAdd(t *testing.T) {
 				err: fmt.Errorf("fake reg error"),
 			},
 			expCPUSet:          cpuset.NewCPUSet(1, 2, 3, 4),
-			expErr:    fmt.Errorf("fake reg error"),
+			expAllocateErr:     fmt.Errorf("fake reg error"),
+			expAddContainerErr: nil,
 		},
 		{
 			description:        "cpu manager add - container update error",
 			updateErr:          fmt.Errorf("fake update error"),
 			policy:             testPolicy,
 			expCPUSet:          cpuset.NewCPUSet(1, 2, 3, 4),
-			expErr:      fmt.Errorf("fake update error"),
+			expAllocateErr:     nil,
+			expAddContainerErr: fmt.Errorf("fake update error"),
 		},
 	}
 
@@ -271,10 +275,16 @@ func TestCPUManagerAdd(t *testing.T) {
 
 		pod := makePod("fakePod", "fakeContainer", "2", "2")
 		container := &pod.Spec.Containers[0]
-		err := mgr.AddContainer(pod, container, "fakeID")
+		err := mgr.Allocate(pod, container)
-		if !reflect.DeepEqual(err, testCase.expErr) {
+		if !reflect.DeepEqual(err, testCase.expAllocateErr) {
+			t.Errorf("CPU Manager Allocate() error (%v). expected error: %v but got: %v",
+				testCase.description, testCase.expAllocateErr, err)
+		}
+
+		err = mgr.AddContainer(pod, container, "fakeID")
+		if !reflect.DeepEqual(err, testCase.expAddContainerErr) {
 			t.Errorf("CPU Manager AddContainer() error (%v). expected error: %v but got: %v",
-				testCase.description, testCase.expErr, err)
+				testCase.description, testCase.expAddContainerErr, err)
 		}
 		if !testCase.expCPUSet.Equals(mgr.state.GetDefaultCPUSet()) {
 			t.Errorf("CPU Manager AddContainer() error (%v). expected cpuset: %v but got: %v",
@@ -494,7 +504,12 @@ func TestCPUManagerAddWithInitContainers(t *testing.T) {
 			testCase.expCSets...)
 
 		for i := range containers {
-			err := mgr.AddContainer(testCase.pod, &containers[i], containerIDs[i])
+			err := mgr.Allocate(testCase.pod, &containers[i])
+			if err != nil {
+				t.Errorf("StaticPolicy Allocate() error (%v). unexpected error for container id: %v: %v",
+					testCase.description, containerIDs[i], err)
+			}
+			err = mgr.AddContainer(testCase.pod, &containers[i], containerIDs[i])
 			if err != nil {
 				t.Errorf("StaticPolicy AddContainer() error (%v). unexpected error for container id: %v: %v",
 					testCase.description, containerIDs[i], err)
@@ -974,21 +989,24 @@ func TestCPUManagerAddWithResvList(t *testing.T) {
 		updateErr          error
 		policy             Policy
 		expCPUSet          cpuset.CPUSet
-		expErr      error
+		expAllocateErr     error
+		expAddContainerErr error
 	}{
 		{
 			description:        "cpu manager add - no error",
 			updateErr:          nil,
 			policy:             testPolicy,
 			expCPUSet:          cpuset.NewCPUSet(0, 3),
-			expErr:      nil,
+			expAllocateErr:     nil,
+			expAddContainerErr: nil,
 		},
 		{
 			description:        "cpu manager add - container update error",
 			updateErr:          fmt.Errorf("fake update error"),
 			policy:             testPolicy,
 			expCPUSet:          cpuset.NewCPUSet(0, 1, 2, 3),
-			expErr:      fmt.Errorf("fake update error"),
+			expAllocateErr:     nil,
+			expAddContainerErr: fmt.Errorf("fake update error"),
 		},
 	}
 
@@ -1009,10 +1027,16 @@ func TestCPUManagerAddWithResvList(t *testing.T) {
 
 		pod := makePod("fakePod", "fakeContainer", "2", "2")
 		container := &pod.Spec.Containers[0]
-		err := mgr.AddContainer(pod, container, "fakeID")
+		err := mgr.Allocate(pod, container)
-		if !reflect.DeepEqual(err, testCase.expErr) {
+		if !reflect.DeepEqual(err, testCase.expAllocateErr) {
+			t.Errorf("CPU Manager Allocate() error (%v). expected error: %v but got: %v",
+				testCase.description, testCase.expAllocateErr, err)
+		}
+
+		err = mgr.AddContainer(pod, container, "fakeID")
+		if !reflect.DeepEqual(err, testCase.expAddContainerErr) {
 			t.Errorf("CPU Manager AddContainer() error (%v). expected error: %v but got: %v",
-				testCase.description, testCase.expErr, err)
+				testCase.description, testCase.expAddContainerErr, err)
 		}
 		if !testCase.expCPUSet.Equals(mgr.state.GetDefaultCPUSet()) {
 			t.Errorf("CPU Manager AddContainer() error (%v). expected cpuset: %v but got: %v",