Add unit tests to utils (#192)

pkg/apis/pingcap.com/v1alpha1/types.go

@@ -22,13 +22,14 @@ import (
 )
 
 const (
-	// AnnotationStorageSize is a storage size annotation key
-	AnnotationStorageSize string = "storage.pingcap.com/size"
-
 	// TiKVStateUp represents status of Up of TiKV
 	TiKVStateUp string = "Up"
 	// TiKVStateDown represents status of Down of TiKV
 	TiKVStateDown string = "Down"
+	// TiKVStateOffline represents status of Offline of TiKV
+	TiKVStateOffline string = "Offline"
+	// TiKVStateTombstone represents status of Tombstone of TiKV
+	TiKVStateTombstone string = "Tombstone"
 )
 
 // MemberType represents member type
@@ -37,16 +38,12 @@ type MemberType string
 const (
 	// PDMemberType is pd container type
 	PDMemberType MemberType = "pd"
-
 	// TiDBMemberType is tidb container type
 	TiDBMemberType MemberType = "tidb"
-
 	// TiKVMemberType is tikv container type
 	TiKVMemberType MemberType = "tikv"
-
 	//PushGatewayMemberType is pushgateway container type
 	PushGatewayMemberType MemberType = "pushgateway"
-
 	// UnknownMemberType is unknown container type
 	UnknownMemberType MemberType = "unknown"
 )

pkg/controller/pd_control.go

@@ -32,7 +32,9 @@ import (
 )
 
 const (
-	timeout           = 5 * time.Second
+	timeout = 5 * time.Second
+
+	// https://github.com/pingcap/pd/blob/master/server/coordinator.go#L42-L45
 	schedulerExisted  = "scheduler existed"
 	schedulerNotFound = "scheduler not found"
 )

pkg/controller/tidbcluster/tidb_cluster_control.go

@@ -17,7 +17,6 @@ import (
 	"github.com/pingcap/tidb-operator/pkg/apis/pingcap.com/v1alpha1"
 	"github.com/pingcap/tidb-operator/pkg/controller"
 	"github.com/pingcap/tidb-operator/pkg/manager"
-	"github.com/pingcap/tidb-operator/pkg/util"
 	apiequality "k8s.io/apimachinery/pkg/api/equality"
 	errorutils "k8s.io/apimachinery/pkg/util/errors"
 	"k8s.io/client-go/tools/record"
@@ -161,7 +160,7 @@ func (tcc *defaultTidbClusterControl) IsTiKVAvailable(tc *v1alpha1.TidbCluster)
 
 	var availableNum int32
 	for _, store := range tc.Status.TiKV.Stores {
-		if store.State == util.StoreUpState {
+		if store.State == v1alpha1.TiKVStateUp {
 			availableNum++
 		}
 	}

pkg/manager/member/tikv_scaler.go

@@ -22,7 +22,6 @@ import (
 	"github.com/pingcap/tidb-operator/pkg/apis/pingcap.com/v1alpha1"
 	"github.com/pingcap/tidb-operator/pkg/controller"
 	"github.com/pingcap/tidb-operator/pkg/label"
-	"github.com/pingcap/tidb-operator/pkg/util"
 	apps "k8s.io/api/apps/v1beta1"
 	corelisters "k8s.io/client-go/listers/core/v1"
 )
@@ -86,7 +85,7 @@ func (tsd *tikvScaler) ScaleIn(tc *v1alpha1.TidbCluster, oldSet *apps.StatefulSe
 				resetReplicas(newSet, oldSet)
 				return err
 			}
-			if state != util.StoreOfflineState {
+			if state != v1alpha1.TiKVStateOffline {
 				if err := tsd.pdControl.GetPDClient(tc).DeleteStore(id); err != nil {
 					resetReplicas(newSet, oldSet)
 					return err

pkg/manager/member/tikv_scaler_test.go

@@ -22,7 +22,6 @@ import (
 	"github.com/pingcap/tidb-operator/pkg/apis/pingcap.com/v1alpha1"
 	"github.com/pingcap/tidb-operator/pkg/controller"
 	"github.com/pingcap/tidb-operator/pkg/label"
-	"github.com/pingcap/tidb-operator/pkg/util"
 	corev1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -284,7 +283,7 @@ func TestTiKVScalerScaleIn(t *testing.T) {
 			storeFun: func(tc *v1alpha1.TidbCluster) {
 				normalStoreFun(tc)
 				store := tc.Status.TiKV.Stores["1"]
-				store.State = util.StoreOfflineState
+				store.State = v1alpha1.TiKVStateOffline
 				tc.Status.TiKV.Stores["1"] = store
 			},
 			delStoreErr:   false,
@@ -379,7 +378,7 @@ func normalStoreFun(tc *v1alpha1.TidbCluster) {
 		"1": {
 			ID:      "1",
 			PodName: ordinalPodName(v1alpha1.TiKVMemberType, tc.GetName(), 4),
-			State:   util.StoreUpState,
+			State:   v1alpha1.TiKVStateUp,
 		},
 	}
 }
@@ -389,7 +388,7 @@ func tombstoneStoreFun(tc *v1alpha1.TidbCluster) {
 		"1": {
 			ID:      "1",
 			PodName: ordinalPodName(v1alpha1.TiKVMemberType, tc.GetName(), 4),
-			State:   util.StoreTombstoneState,
+			State:   v1alpha1.TiKVStateTombstone,
 		},
 	}
 }

pkg/util/util.go

@@ -37,17 +37,6 @@ var (
 	}
 )
 
-const (
-	// StoreUpState is state when tikv store is normal
-	StoreUpState = "Up"
-	// StoreOfflineState is state when tikv store is offline
-	StoreOfflineState = "Offline"
-	// StoreDownState is state when tikv store is down
-	StoreDownState = "Down"
-	// StoreTombstoneState is state when tikv store is tombstone
-	StoreTombstoneState = "Tombstone"
-)
-
 // AntiAffinityForPod creates a PodAntiAffinity with antiLabels
 func AntiAffinityForPod(namespace string, antiLabels map[string]string) *corev1.PodAntiAffinity {
 	keys := []string{}
@@ -114,12 +103,12 @@ func AffinityForNodeSelector(namespace string, required bool, antiLabels, select
 	preferredTerms := []corev1.PreferredSchedulingTerm{}
 	exps := []corev1.NodeSelectorRequirement{}
 	for _, key := range keys {
+		if selector[key] == "" {
+			continue
+		}
+		values := strings.Split(selector[key], ",")
 		// region,zone,rack,host are preferred labels, others are must match labels
 		if weight, ok := topologySchedulingWeight[key]; ok {
-			if selector[key] == "" {
-				continue
-			}
-			values := strings.Split(selector[key], ",")
 			t := corev1.PreferredSchedulingTerm{
 				Weight: weight,
 				Preference: corev1.NodeSelectorTerm{
@@ -137,7 +126,7 @@ func AffinityForNodeSelector(namespace string, required bool, antiLabels, select
 			requirement := corev1.NodeSelectorRequirement{
 				Key:      key,
 				Operator: corev1.NodeSelectorOpIn,
-				Values:   []string{selector[key]},
+				Values:   values,
 			}
 			// NodeSelectorRequirement in the same MatchExpressions are ANDed otherwise ORed
 			exps = append(exps, requirement)