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aa13f3fa2a884042dbccb85bc93f8b2958ccf64c
kubernetes/pkg/volume/util/util_test.go
Ryan Hitchman 0067002db8 Make a few code paths compile cleanly with 32-bit Go.
2018-02-27 13:53:32 -08:00

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/*
Copyright 2017 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package util
import (
"io/ioutil"
"os"
"testing"
"k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/util/sets"
utiltesting "k8s.io/client-go/util/testing"
// util.go uses api.Codecs.LegacyCodec so import this package to do some
// resource initialization.
"hash/fnv"
_ "k8s.io/kubernetes/pkg/apis/core/install"
"k8s.io/kubernetes/pkg/apis/core/v1/helper"
"k8s.io/kubernetes/pkg/util/mount"
"reflect"
"strings"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/kubernetes/pkg/util/slice"
"k8s.io/kubernetes/pkg/volume"
)
var nodeLabels map[string]string = map[string]string{
"test-key1": "test-value1",
"test-key2": "test-value2",
}
func TestCheckAlphaNodeAffinity(t *testing.T) {
type affinityTest struct {
name string
expectSuccess bool
pv *v1.PersistentVolume
}
cases := []affinityTest{
{
name: "valid-no-constraints",
expectSuccess: true,
pv: testVolumeWithAlphaNodeAffinity(t, &v1.NodeAffinity{}),
},
{
name: "valid-constraints",
expectSuccess: true,
pv: testVolumeWithAlphaNodeAffinity(t, &v1.NodeAffinity{
RequiredDuringSchedulingIgnoredDuringExecution: &v1.NodeSelector{
NodeSelectorTerms: []v1.NodeSelectorTerm{
{
MatchExpressions: []v1.NodeSelectorRequirement{
{
Key: "test-key1",
Operator: v1.NodeSelectorOpIn,
Values: []string{"test-value1", "test-value3"},
},
{
Key: "test-key2",
Operator: v1.NodeSelectorOpIn,
Values: []string{"test-value0", "test-value2"},
},
},
},
},
},
}),
},
{
name: "invalid-key",
expectSuccess: false,
pv: testVolumeWithAlphaNodeAffinity(t, &v1.NodeAffinity{
RequiredDuringSchedulingIgnoredDuringExecution: &v1.NodeSelector{
NodeSelectorTerms: []v1.NodeSelectorTerm{
{
MatchExpressions: []v1.NodeSelectorRequirement{
{
Key: "test-key1",
Operator: v1.NodeSelectorOpIn,
Values: []string{"test-value1", "test-value3"},
},
{
Key: "test-key3",
Operator: v1.NodeSelectorOpIn,
Values: []string{"test-value0", "test-value2"},
},
},
},
},
},
}),
},
{
name: "invalid-values",
expectSuccess: false,
pv: testVolumeWithAlphaNodeAffinity(t, &v1.NodeAffinity{
RequiredDuringSchedulingIgnoredDuringExecution: &v1.NodeSelector{
NodeSelectorTerms: []v1.NodeSelectorTerm{
{
MatchExpressions: []v1.NodeSelectorRequirement{
{
Key: "test-key1",
Operator: v1.NodeSelectorOpIn,
Values: []string{"test-value3", "test-value4"},
},
{
Key: "test-key2",
Operator: v1.NodeSelectorOpIn,
Values: []string{"test-value0", "test-value2"},
},
},
},
},
},
}),
},
}
for _, c := range cases {
err := CheckNodeAffinity(c.pv, nodeLabels)
if err != nil && c.expectSuccess {
t.Errorf("CheckTopology %v returned error: %v", c.name, err)
}
if err == nil && !c.expectSuccess {
t.Errorf("CheckTopology %v returned success, expected error", c.name)
}
}
}
func TestCheckVolumeNodeAffinity(t *testing.T) {
type affinityTest struct {
name string
expectSuccess bool
pv *v1.PersistentVolume
}
cases := []affinityTest{
{
name: "valid-nil",
expectSuccess: true,
pv: testVolumeWithNodeAffinity(t, nil),
},
{
name: "valid-no-constraints",
expectSuccess: true,
pv: testVolumeWithNodeAffinity(t, &v1.VolumeNodeAffinity{}),
},
{
name: "valid-constraints",
expectSuccess: true,
pv: testVolumeWithNodeAffinity(t, &v1.VolumeNodeAffinity{
Required: &v1.NodeSelector{
NodeSelectorTerms: []v1.NodeSelectorTerm{
{
MatchExpressions: []v1.NodeSelectorRequirement{
{
Key: "test-key1",
Operator: v1.NodeSelectorOpIn,
Values: []string{"test-value1", "test-value3"},
},
{
Key: "test-key2",
Operator: v1.NodeSelectorOpIn,
Values: []string{"test-value0", "test-value2"},
},
},
},
},
},
}),
},
{
name: "invalid-key",
expectSuccess: false,
pv: testVolumeWithNodeAffinity(t, &v1.VolumeNodeAffinity{
Required: &v1.NodeSelector{
NodeSelectorTerms: []v1.NodeSelectorTerm{
{
MatchExpressions: []v1.NodeSelectorRequirement{
{
Key: "test-key1",
Operator: v1.NodeSelectorOpIn,
Values: []string{"test-value1", "test-value3"},
},
{
Key: "test-key3",
Operator: v1.NodeSelectorOpIn,
Values: []string{"test-value0", "test-value2"},
},
},
},
},
},
}),
},
{
name: "invalid-values",
expectSuccess: false,
pv: testVolumeWithNodeAffinity(t, &v1.VolumeNodeAffinity{
Required: &v1.NodeSelector{
NodeSelectorTerms: []v1.NodeSelectorTerm{
{
MatchExpressions: []v1.NodeSelectorRequirement{
{
Key: "test-key1",
Operator: v1.NodeSelectorOpIn,
Values: []string{"test-value3", "test-value4"},
},
{
Key: "test-key2",
Operator: v1.NodeSelectorOpIn,
Values: []string{"test-value0", "test-value2"},
},
},
},
},
},
}),
},
}
for _, c := range cases {
err := CheckNodeAffinity(c.pv, nodeLabels)
if err != nil && c.expectSuccess {
t.Errorf("CheckTopology %v returned error: %v", c.name, err)
}
if err == nil && !c.expectSuccess {
t.Errorf("CheckTopology %v returned success, expected error", c.name)
}
}
}
func testVolumeWithAlphaNodeAffinity(t *testing.T, affinity *v1.NodeAffinity) *v1.PersistentVolume {
objMeta := metav1.ObjectMeta{Name: "test-constraints"}
objMeta.Annotations = map[string]string{}
err := helper.StorageNodeAffinityToAlphaAnnotation(objMeta.Annotations, affinity)
if err != nil {
t.Fatalf("Failed to get node affinity annotation: %v", err)
}
return &v1.PersistentVolume{
ObjectMeta: objMeta,
}
}
func testVolumeWithNodeAffinity(t *testing.T, affinity *v1.VolumeNodeAffinity) *v1.PersistentVolume {
objMeta := metav1.ObjectMeta{Name: "test-constraints"}
return &v1.PersistentVolume{
ObjectMeta: objMeta,
Spec: v1.PersistentVolumeSpec{
NodeAffinity: affinity,
},
}
}
func TestLoadPodFromFile(t *testing.T) {
tests := []struct {
name string
content string
expectError bool
}{
{
"yaml",
`
apiVersion: v1
kind: Pod
metadata:
name: testpod
spec:
containers:
- image: k8s.gcr.io/busybox
`,
false,
},
{
"json",
`
{
"apiVersion": "v1",
"kind": "Pod",
"metadata": {
"name": "testpod"
},
"spec": {
"containers": [
{
"image": "k8s.gcr.io/busybox"
}
]
}
}`,
false,
},
{
"invalid pod",
`
apiVersion: v1
kind: Pod
metadata:
name: testpod
spec:
- image: k8s.gcr.io/busybox
`,
true,
},
}
for _, test := range tests {
tempFile, err := ioutil.TempFile("", "podfile")
defer os.Remove(tempFile.Name())
if err != nil {
t.Fatalf("cannot create temporary file: %v", err)
}
if _, err = tempFile.Write([]byte(test.content)); err != nil {
t.Fatalf("cannot save temporary file: %v", err)
}
if err = tempFile.Close(); err != nil {
t.Fatalf("cannot close temporary file: %v", err)
}
pod, err := LoadPodFromFile(tempFile.Name())
if test.expectError {
if err == nil {
t.Errorf("test %q expected error, got nil", test.name)
}
} else {
// no error expected
if err != nil {
t.Errorf("error loading pod %q: %v", test.name, err)
}
if pod == nil {
t.Errorf("test %q expected pod, got nil", test.name)
}
}
}
}
func TestZonesToSet(t *testing.T) {
functionUnderTest := "ZonesToSet"
// First part: want an error
sliceOfZones := []string{"", ",", "us-east-1a, , us-east-1d", ", us-west-1b", "us-west-2b,"}
for _, zones := range sliceOfZones {
if got, err := ZonesToSet(zones); err == nil {
t.Errorf("%v(%v) returned (%v), want (%v)", functionUnderTest, zones, got, "an error")
}
}
// Second part: want no error
tests := []struct {
zones string
want sets.String
}{
{
zones: "us-east-1a",
want: sets.String{"us-east-1a": sets.Empty{}},
},
{
zones: "us-east-1a, us-west-2a",
want: sets.String{
"us-east-1a": sets.Empty{},
"us-west-2a": sets.Empty{},
},
},
}
for _, tt := range tests {
if got, err := ZonesToSet(tt.zones); err != nil || !got.Equal(tt.want) {
t.Errorf("%v(%v) returned (%v), want (%v)", functionUnderTest, tt.zones, got, tt.want)
}
}
}
func TestDoUnmountMountPoint(t *testing.T) {
tmpDir1, err1 := utiltesting.MkTmpdir("umount_test1")
if err1 != nil {
t.Fatalf("error creating temp dir: %v", err1)
}
defer os.RemoveAll(tmpDir1)
tmpDir2, err2 := utiltesting.MkTmpdir("umount_test2")
if err2 != nil {
t.Fatalf("error creating temp dir: %v", err2)
}
defer os.RemoveAll(tmpDir2)
// Second part: want no error
tests := []struct {
mountPath string
corruptedMnt bool
}{
{
mountPath: tmpDir1,
corruptedMnt: true,
},
{
mountPath: tmpDir2,
corruptedMnt: false,
},
}
fake := &mount.FakeMounter{}
for _, tt := range tests {
err := doUnmountMountPoint(tt.mountPath, fake, false, tt.corruptedMnt)
if err != nil {
t.Errorf("err Expected nil, but got: %v", err)
}
}
}
func TestCalculateTimeoutForVolume(t *testing.T) {
pv := &v1.PersistentVolume{
Spec: v1.PersistentVolumeSpec{
Capacity: v1.ResourceList{
v1.ResourceName(v1.ResourceStorage): resource.MustParse("500M"),
},
},
}
timeout := CalculateTimeoutForVolume(50, 30, pv)
if timeout != 50 {
t.Errorf("Expected 50 for timeout but got %v", timeout)
}
pv.Spec.Capacity[v1.ResourceStorage] = resource.MustParse("2Gi")
timeout = CalculateTimeoutForVolume(50, 30, pv)
if timeout != 60 {
t.Errorf("Expected 60 for timeout but got %v", timeout)
}
pv.Spec.Capacity[v1.ResourceStorage] = resource.MustParse("150Gi")
timeout = CalculateTimeoutForVolume(50, 30, pv)
if timeout != 4500 {
t.Errorf("Expected 4500 for timeout but got %v", timeout)
}
}
func TestGenerateVolumeName(t *testing.T) {
// Normal operation, no truncate
v1 := GenerateVolumeName("kubernetes", "pv-cinder-abcde", 255)
if v1 != "kubernetes-dynamic-pv-cinder-abcde" {
t.Errorf("Expected kubernetes-dynamic-pv-cinder-abcde, got %s", v1)
}
// Truncate trailing "6789-dynamic"
prefix := strings.Repeat("0123456789", 9) // 90 characters prefix + 8 chars. of "-dynamic"
v2 := GenerateVolumeName(prefix, "pv-cinder-abcde", 100)
expect := prefix[:84] + "-pv-cinder-abcde"
if v2 != expect {
t.Errorf("Expected %s, got %s", expect, v2)
}
// Truncate really long cluster name
prefix = strings.Repeat("0123456789", 1000) // 10000 characters prefix
v3 := GenerateVolumeName(prefix, "pv-cinder-abcde", 100)
if v3 != expect {
t.Errorf("Expected %s, got %s", expect, v3)
}
}
func TestMountOptionFromSpec(t *testing.T) {
scenarios := map[string]struct {
volume *volume.Spec
expectedMountList []string
systemOptions []string
}{
"volume-with-mount-options": {
volume: createVolumeSpecWithMountOption("good-mount-opts", "ro,nfsvers=3", v1.PersistentVolumeSpec{
PersistentVolumeSource: v1.PersistentVolumeSource{
NFS: &v1.NFSVolumeSource{Server: "localhost", Path: "/srv", ReadOnly: false},
},
}),
expectedMountList: []string{"ro", "nfsvers=3"},
systemOptions: nil,
},
"volume-with-bad-mount-options": {
volume: createVolumeSpecWithMountOption("good-mount-opts", "", v1.PersistentVolumeSpec{
PersistentVolumeSource: v1.PersistentVolumeSource{
NFS: &v1.NFSVolumeSource{Server: "localhost", Path: "/srv", ReadOnly: false},
},
}),
expectedMountList: []string{},
systemOptions: nil,
},
"vol-with-sys-opts": {
volume: createVolumeSpecWithMountOption("good-mount-opts", "ro,nfsvers=3", v1.PersistentVolumeSpec{
PersistentVolumeSource: v1.PersistentVolumeSource{
NFS: &v1.NFSVolumeSource{Server: "localhost", Path: "/srv", ReadOnly: false},
},
}),
expectedMountList: []string{"ro", "nfsvers=3", "fsid=100", "hard"},
systemOptions: []string{"fsid=100", "hard"},
},
"vol-with-sys-opts-with-dup": {
volume: createVolumeSpecWithMountOption("good-mount-opts", "ro,nfsvers=3", v1.PersistentVolumeSpec{
PersistentVolumeSource: v1.PersistentVolumeSource{
NFS: &v1.NFSVolumeSource{Server: "localhost", Path: "/srv", ReadOnly: false},
},
}),
expectedMountList: []string{"ro", "nfsvers=3", "fsid=100"},
systemOptions: []string{"fsid=100", "ro"},
},
}
for name, scenario := range scenarios {
mountOptions := MountOptionFromSpec(scenario.volume, scenario.systemOptions...)
if !reflect.DeepEqual(slice.SortStrings(mountOptions), slice.SortStrings(scenario.expectedMountList)) {
t.Errorf("for %s expected mount options : %v got %v", name, scenario.expectedMountList, mountOptions)
}
}
}
func createVolumeSpecWithMountOption(name string, mountOptions string, spec v1.PersistentVolumeSpec) *volume.Spec {
annotations := map[string]string{
v1.MountOptionAnnotation: mountOptions,
}
objMeta := metav1.ObjectMeta{
Name: name,
Annotations: annotations,
}
pv := &v1.PersistentVolume{
ObjectMeta: objMeta,
Spec: spec,
}
return &volume.Spec{PersistentVolume: pv}
}
func checkFnv32(t *testing.T, s string, expected uint32) {
h := fnv.New32()
h.Write([]byte(s))
h.Sum32()
if h.Sum32() != expected {
t.Fatalf("hash of %q was %v, expected %v", s, h.Sum32(), expected)
}
}
func TestChooseZoneForVolume(t *testing.T) {
checkFnv32(t, "henley", 1180403676)
// 1180403676 mod 3 == 0, so the offset from "henley" is 0, which makes it easier to verify this by inspection
// A few others
checkFnv32(t, "henley-", 2652299129)
checkFnv32(t, "henley-a", 1459735322)
checkFnv32(t, "", 2166136261)
tests := []struct {
Zones sets.String
VolumeName string
Expected string
}{
// Test for PVC names that don't have a dash
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "henley",
Expected: "a", // hash("henley") == 0
},
// Tests for PVC names that end in - number, but don't look like statefulset PVCs
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "henley-0",
Expected: "a", // hash("henley") == 0
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "henley-1",
Expected: "b", // hash("henley") + 1 == 1
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "henley-2",
Expected: "c", // hash("henley") + 2 == 2
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "henley-3",
Expected: "a", // hash("henley") + 3 == 3 === 0 mod 3
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "henley-4",
Expected: "b", // hash("henley") + 4 == 4 === 1 mod 3
},
// Tests for PVC names that are edge cases
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "henley-",
Expected: "c", // hash("henley-") = 2652299129 === 2 mod 3
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "henley-a",
Expected: "c", // hash("henley-a") = 1459735322 === 2 mod 3
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium--1",
Expected: "c", // hash("") + 1 == 2166136261 + 1 === 2 mod 3
},
// Tests for PVC names for simple StatefulSet cases
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-henley-1",
Expected: "b", // hash("henley") + 1 == 1
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "loud-henley-1",
Expected: "b", // hash("henley") + 1 == 1
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "quiet-henley-2",
Expected: "c", // hash("henley") + 2 == 2
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-henley-2",
Expected: "c", // hash("henley") + 2 == 2
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-henley-3",
Expected: "a", // hash("henley") + 3 == 3 === 0 mod 3
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-henley-4",
Expected: "b", // hash("henley") + 4 == 4 === 1 mod 3
},
// Tests for statefulsets (or claims) with dashes in the names
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-alpha-henley-2",
Expected: "c", // hash("henley") + 2 == 2
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-beta-henley-3",
Expected: "a", // hash("henley") + 3 == 3 === 0 mod 3
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-gamma-henley-4",
Expected: "b", // hash("henley") + 4 == 4 === 1 mod 3
},
// Tests for statefulsets name ending in -
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-henley--2",
Expected: "a", // hash("") + 2 == 0 mod 3
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-henley--3",
Expected: "b", // hash("") + 3 == 1 mod 3
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-henley--4",
Expected: "c", // hash("") + 4 == 2 mod 3
},
}
for _, test := range tests {
actual := ChooseZoneForVolume(test.Zones, test.VolumeName)
if actual != test.Expected {
t.Errorf("Test %v failed, expected zone %q, actual %q", test, test.Expected, actual)
}
}
}
func TestChooseZonesForVolume(t *testing.T) {
checkFnv32(t, "henley", 1180403676)
// 1180403676 mod 3 == 0, so the offset from "henley" is 0, which makes it easier to verify this by inspection
// A few others
checkFnv32(t, "henley-", 2652299129)
checkFnv32(t, "henley-a", 1459735322)
checkFnv32(t, "", 2166136261)
tests := []struct {
Zones sets.String
VolumeName string
NumZones uint32
Expected sets.String
}{
// Test for PVC names that don't have a dash
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "henley",
NumZones: 1,
Expected: sets.NewString("a" /* hash("henley") == 0 */),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "henley",
NumZones: 2,
Expected: sets.NewString("a" /* hash("henley") == 0 */, "b"),
},
// Tests for PVC names that end in - number, but don't look like statefulset PVCs
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "henley-0",
NumZones: 1,
Expected: sets.NewString("a" /* hash("henley") == 0 */),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "henley-0",
NumZones: 2,
Expected: sets.NewString("a" /* hash("henley") == 0 */, "b"),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "henley-1",
NumZones: 1,
Expected: sets.NewString("b" /* hash("henley") + 1 == 1 */),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "henley-1",
NumZones: 2,
Expected: sets.NewString("c" /* hash("henley") + 1 + 1(startingIndex) == 2 */, "a"),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "henley-2",
NumZones: 1,
Expected: sets.NewString("c" /* hash("henley") + 2 == 2 */),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "henley-2",
NumZones: 2,
Expected: sets.NewString("b" /* hash("henley") + 2 + 2(startingIndex) == 4 */, "c"),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "henley-3",
NumZones: 1,
Expected: sets.NewString("a" /* hash("henley") + 3 == 3 === 0 mod 3 */),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "henley-3",
NumZones: 2,
Expected: sets.NewString("a" /* hash("henley") + 3 + 3(startingIndex) == 6 */, "b"),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "henley-4",
NumZones: 1,
Expected: sets.NewString("b" /* hash("henley") + 4 == 4 === 1 mod 3 */),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "henley-4",
NumZones: 2,
Expected: sets.NewString("c" /* hash("henley") + 4 + 4(startingIndex) == 8 */, "a"),
},
// Tests for PVC names that are edge cases
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "henley-",
NumZones: 1,
Expected: sets.NewString("c" /* hash("henley-") = 2652299129 === 2 mod 3 */),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "henley-",
NumZones: 2,
Expected: sets.NewString("c" /* hash("henley-") = 2652299129 === 2 mod 3 = 2 */, "a"),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "henley-a",
NumZones: 1,
Expected: sets.NewString("c" /* hash("henley-a") = 1459735322 === 2 mod 3 */),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "henley-a",
NumZones: 2,
Expected: sets.NewString("c" /* hash("henley-a") = 1459735322 === 2 mod 3 = 2 */, "a"),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium--1",
NumZones: 1,
Expected: sets.NewString("c" /* hash("") + 1 == 2166136261 + 1 === 2 mod 3 */),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium--1",
NumZones: 2,
Expected: sets.NewString("a" /* hash("") + 1 + 1(startingIndex) == 2166136261 + 1 + 1 === 3 mod 3 = 0 */, "b"),
},
// Tests for PVC names for simple StatefulSet cases
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-henley-1",
NumZones: 1,
Expected: sets.NewString("b" /* hash("henley") + 1 == 1 */),
},
// Tests for PVC names for simple StatefulSet cases
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-henley-1",
NumZones: 2,
Expected: sets.NewString("c" /* hash("henley") + 1 + 1(startingIndex) == 2 */, "a"),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "loud-henley-1",
NumZones: 1,
Expected: sets.NewString("b" /* hash("henley") + 1 == 1 */),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "loud-henley-1",
NumZones: 2,
Expected: sets.NewString("c" /* hash("henley") + 1 + 1(startingIndex) == 2 */, "a"),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "quiet-henley-2",
NumZones: 1,
Expected: sets.NewString("c" /* hash("henley") + 2 == 2 */),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "quiet-henley-2",
NumZones: 2,
Expected: sets.NewString("b" /* hash("henley") + 2 + 2(startingIndex) == 4 */, "c"),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-henley-2",
NumZones: 1,
Expected: sets.NewString("c" /* hash("henley") + 2 == 2 */),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-henley-2",
NumZones: 2,
Expected: sets.NewString("b" /* hash("henley") + 2 + 2(startingIndex) == 4 */, "c"),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-henley-3",
NumZones: 1,
Expected: sets.NewString("a" /* hash("henley") + 3 == 3 === 0 mod 3 */),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-henley-3",
NumZones: 2,
Expected: sets.NewString("a" /* hash("henley") + 3 + 3(startingIndex) == 6 === 6 mod 3 = 0 */, "b"),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-henley-4",
NumZones: 1,
Expected: sets.NewString("b" /* hash("henley") + 4 == 4 === 1 mod 3 */),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-henley-4",
NumZones: 2,
Expected: sets.NewString("c" /* hash("henley") + 4 + 4(startingIndex) == 8 === 2 mod 3 */, "a"),
},
// Tests for statefulsets (or claims) with dashes in the names
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-alpha-henley-2",
NumZones: 1,
Expected: sets.NewString("c" /* hash("henley") + 2 == 2 */),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-alpha-henley-2",
NumZones: 2,
Expected: sets.NewString("b" /* hash("henley") + 2 + 2(startingIndex) == 4 */, "c"),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-beta-henley-3",
NumZones: 1,
Expected: sets.NewString("a" /* hash("henley") + 3 == 3 === 0 mod 3 */),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-beta-henley-3",
NumZones: 2,
Expected: sets.NewString("a" /* hash("henley") + 3 + 3(startingIndex) == 6 === 0 mod 3 */, "b"),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-gamma-henley-4",
NumZones: 1,
Expected: sets.NewString("b" /* hash("henley") + 4 == 4 === 1 mod 3 */),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-gamma-henley-4",
NumZones: 2,
Expected: sets.NewString("c" /* hash("henley") + 4 + 4(startingIndex) == 8 === 2 mod 3 */, "a"),
},
// Tests for statefulsets name ending in -
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-henley--2",
NumZones: 1,
Expected: sets.NewString("a" /* hash("") + 2 == 0 mod 3 */),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-henley--2",
NumZones: 2,
Expected: sets.NewString("c" /* hash("") + 2 + 2(startingIndex) == 2 mod 3 */, "a"),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-henley--3",
NumZones: 1,
Expected: sets.NewString("b" /* hash("") + 3 == 1 mod 3 */),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-henley--3",
NumZones: 2,
Expected: sets.NewString("b" /* hash("") + 3 + 3(startingIndex) == 1 mod 3 */, "c"),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-henley--4",
NumZones: 1,
Expected: sets.NewString("c" /* hash("") + 4 == 2 mod 3 */),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-henley--4",
NumZones: 2,
Expected: sets.NewString("a" /* hash("") + 4 + 4(startingIndex) == 0 mod 3 */, "b"),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-henley--4",
NumZones: 3,
Expected: sets.NewString("c" /* hash("") + 4 == 2 mod 3 */, "a", "b"),
},
{
Zones: sets.NewString("a", "b", "c"),
VolumeName: "medium-henley--4",
NumZones: 4,
Expected: sets.NewString("c" /* hash("") + 4 + 9(startingIndex) == 2 mod 3 */, "a", "b", "c"),
},
{
Zones: sets.NewString("a", "b", "c", "d", "e", "f", "g", "h", "i"),
VolumeName: "henley-0",
NumZones: 2,
Expected: sets.NewString("a" /* hash("henley") == 0 */, "b"),
},
{
Zones: sets.NewString("a", "b", "c", "d", "e", "f", "g", "h", "i"),
VolumeName: "henley-1",
NumZones: 2,
Expected: sets.NewString("c" /* hash("henley") == 0 + 2 */, "d"),
},
{
Zones: sets.NewString("a", "b", "c", "d", "e", "f", "g", "h", "i"),
VolumeName: "henley-2",
NumZones: 2,
Expected: sets.NewString("e" /* hash("henley") == 0 + 2 + 2(startingIndex) */, "f"),
},
{
Zones: sets.NewString("a", "b", "c", "d", "e", "f", "g", "h", "i"),
VolumeName: "henley-3",
NumZones: 2,
Expected: sets.NewString("g" /* hash("henley") == 0 + 2 + 4(startingIndex) */, "h"),
},
{
Zones: sets.NewString("a", "b", "c", "d", "e", "f", "g", "h", "i"),
VolumeName: "henley-0",
NumZones: 3,
Expected: sets.NewString("a" /* hash("henley") == 0 */, "b", "c"),
},
{
Zones: sets.NewString("a", "b", "c", "d", "e", "f", "g", "h", "i"),
VolumeName: "henley-1",
NumZones: 3,
Expected: sets.NewString("d" /* hash("henley") == 0 + 1 + 2(startingIndex) */, "e", "f"),
},
{
Zones: sets.NewString("a", "b", "c", "d", "e", "f", "g", "h", "i"),
VolumeName: "henley-2",
NumZones: 3,
Expected: sets.NewString("g" /* hash("henley") == 0 + 2 + 4(startingIndex) */, "h", "i"),
},
{
Zones: sets.NewString("a", "b", "c", "d", "e", "f", "g", "h", "i"),
VolumeName: "henley-3",
NumZones: 3,
Expected: sets.NewString("a" /* hash("henley") == 0 + 3 + 6(startingIndex) */, "b", "c"),
},
}
for _, test := range tests {
actual := ChooseZonesForVolume(test.Zones, test.VolumeName, test.NumZones)
if !actual.Equal(test.Expected) {
t.Errorf("Test %v failed, expected zone %#v, actual %#v", test, test.Expected, actual)
}
}
}
func TestValidateZone(t *testing.T) {
functionUnderTest := "ValidateZone"
// First part: want an error
errCases := []string{"", " "}
for _, errCase := range errCases {
if got := ValidateZone(errCase); got == nil {
t.Errorf("%v(%v) returned (%v), want (%v)", functionUnderTest, errCase, got, "an error")
}
}
// Second part: want no error
succCases := []string{" us-east-1a "}
for _, succCase := range succCases {
if got := ValidateZone(succCase); got != nil {
t.Errorf("%v(%v) returned (%v), want (%v)", functionUnderTest, succCase, got, nil)
}
}
}
func TestGetWindowsPath(t *testing.T) {
tests := []struct {
path string
expectedPath string
}{
{
path: `/var/lib/kubelet/pods/146f8428-83e7-11e7-8dd4-000d3a31dac4/volumes/kubernetes.io~disk`,
expectedPath: `c:\var\lib\kubelet\pods\146f8428-83e7-11e7-8dd4-000d3a31dac4\volumes\kubernetes.io~disk`,
},
{
path: `\var/lib/kubelet/pods/146f8428-83e7-11e7-8dd4-000d3a31dac4\volumes\kubernetes.io~disk`,
expectedPath: `c:\var\lib\kubelet\pods\146f8428-83e7-11e7-8dd4-000d3a31dac4\volumes\kubernetes.io~disk`,
},
{
path: `/`,
expectedPath: `c:\`,
},
{
path: ``,
expectedPath: ``,
},
}
for _, test := range tests {
result := GetWindowsPath(test.path)
if result != test.expectedPath {
t.Errorf("GetWindowsPath(%v) returned (%v), want (%v)", test.path, result, test.expectedPath)
}
}
}
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