Tests for Specs and Teams API

This commit is contained in:
Murat Kabilov 2017-06-08 10:58:48 +02:00 committed by GitHub
parent bc0e9ab4bc
commit bdc2db97ac
4 changed files with 668 additions and 5 deletions

485
pkg/spec/postgresql_test.go Normal file
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@ -0,0 +1,485 @@
package spec
import (
"bytes"
"encoding/json"
"errors"
"reflect"
"testing"
"time"
"k8s.io/client-go/pkg/api/unversioned"
"k8s.io/client-go/pkg/api/v1"
)
var parseTimeTests = []struct {
in string
out time.Time
err error
}{
{"16:08", mustParseTime("16:08"), nil},
{"11:00", mustParseTime("11:00"), nil},
{"23:59", mustParseTime("23:59"), nil},
{"26:09", time.Now(), errors.New(`parsing time "26:09": hour out of range`)},
{"23:69", time.Now(), errors.New(`parsing time "23:69": minute out of range`)},
}
var parseWeekdayTests = []struct {
in string
out time.Weekday
err error
}{
{"Wed", time.Wednesday, nil},
{"Sunday", time.Weekday(0), errors.New("incorrect weekday")},
{"", time.Weekday(0), errors.New("incorrect weekday")},
}
var clusterNames = []struct {
in string
inTeam string
clusterName string
err error
}{
{"acid-test", "acid", "test", nil},
{"test-my-name", "test", "my-name", nil},
{"my-team-another-test", "my-team", "another-test", nil},
{"------strange-team-cluster", "-----", "strange-team-cluster", nil},
{"acid-test", "test", "", errors.New("name must match {TEAM}-{NAME} format")},
{"-test", "", "", errors.New("team name is empty")},
{"-test", "-", "", errors.New("name must match {TEAM}-{NAME} format")},
{"", "-", "", errors.New("name is too short")},
{"-", "-", "", errors.New("name is too short")},
}
var maintenanceWindows = []struct {
in []byte
out MaintenanceWindow
err error
}{{[]byte(`"Tue:10:00-20:00"`),
MaintenanceWindow{
Everyday: false,
Weekday: time.Tuesday,
StartTime: mustParseTime("10:00"),
EndTime: mustParseTime("20:00"),
}, nil},
{[]byte(`"Mon:10:00-10:00"`),
MaintenanceWindow{
Everyday: false,
Weekday: time.Monday,
StartTime: mustParseTime("10:00"),
EndTime: mustParseTime("10:00"),
}, nil},
{[]byte(`"Sun:00:00-00:00"`),
MaintenanceWindow{
Everyday: false,
Weekday: time.Sunday,
StartTime: mustParseTime("00:00"),
EndTime: mustParseTime("00:00"),
}, nil},
{[]byte(`"01:00-10:00"`),
MaintenanceWindow{
Everyday: true,
Weekday: time.Sunday,
StartTime: mustParseTime("01:00"),
EndTime: mustParseTime("10:00"),
}, nil},
{[]byte(`"Mon:12:00-11:00"`), MaintenanceWindow{}, errors.New(`'From' time must be prior to the 'To' time`)},
{[]byte(`"Wed:33:00-00:00"`), MaintenanceWindow{}, errors.New(`could not parse start time: parsing time "33:00": hour out of range`)},
{[]byte(`"Wed:00:00-26:00"`), MaintenanceWindow{}, errors.New(`could not parse end time: parsing time "26:00": hour out of range`)},
{[]byte(`"Sunday:00:00-00:00"`), MaintenanceWindow{}, errors.New(`could not parse weekday: incorrect weekday`)},
{[]byte(`":00:00-10:00"`), MaintenanceWindow{}, errors.New(`could not parse weekday: incorrect weekday`)},
{[]byte(`"Mon:10:00-00:00"`), MaintenanceWindow{}, errors.New(`'From' time must be prior to the 'To' time`)},
{[]byte(`"Mon:00:00:00-10:00:00"`), MaintenanceWindow{}, errors.New(`incorrect maintenance window format`)},
{[]byte(`"Mon:00:00"`), MaintenanceWindow{}, errors.New("incorrect maintenance window format")},
{[]byte(`"Mon:00:00-00:00:00"`), MaintenanceWindow{}, errors.New("could not parse end time: incorrect time format")}}
var unmarshalCluster = []struct {
in []byte
out Postgresql
marshal []byte
err error
}{{
[]byte(`{
"kind": "Postgresql","apiVersion": "acid.zalan.do/v1",
"metadata": {"name": "acid-testcluster1"}, "spec": {"teamId": 100}}`),
Postgresql{
TypeMeta: unversioned.TypeMeta{
Kind: "Postgresql",
APIVersion: "acid.zalan.do/v1",
},
Metadata: v1.ObjectMeta{
Name: "acid-testcluster1",
},
Status: ClusterStatusInvalid,
Error: &json.UnmarshalTypeError{
Value: "number",
Type: reflect.TypeOf(""),
Offset: 126,
Struct: "PostgresSpec",
Field: "teamId",
},
},
[]byte(`{"kind":"Postgresql","apiVersion":"acid.zalan.do/v1","metadata":{"name":"acid-testcluster1","creationTimestamp":null},"spec":{"postgresql":{"version":"","parameters":null},"volume":{"size":"","storageClass":""},"patroni":{"initdb":null,"pg_hba":null,"ttl":0,"loop_wait":0,"retry_timeout":0,"maximum_lag_on_failover":0},"resources":{"requests":{"cpu":"","memory":""},"limits":{"cpu":"","memory":""}},"teamId":"","allowedSourceRanges":null,"numberOfInstances":0,"users":null},"status":"Invalid"}`), nil},
{[]byte(`{
"kind": "Postgresql",
"apiVersion": "acid.zalan.do/v1",
"metadata": {
"name": "acid-testcluster1"
},
"spec": {
"teamId": "ACID",
"volume": {
"size": "5Gi",
"storageClass": "SSD"
},
"numberOfInstances": 2,
"users": {
"zalando": [
"superuser",
"createdb"
]
},
"allowedSourceRanges": [
"127.0.0.1/32"
],
"postgresql": {
"version": "9.6",
"parameters": {
"shared_buffers": "32MB",
"max_connections": "10",
"log_statement": "all"
}
},
"resources": {
"requests": {
"cpu": "10m",
"memory": "50Mi"
},
"limits": {
"cpu": "300m",
"memory": "3000Mi"
}
},
"patroni": {
"initdb": {
"encoding": "UTF8",
"locale": "en_US.UTF-8",
"data-checksums": "true"
},
"pg_hba": [
"hostssl all all 0.0.0.0/0 md5",
"host all all 0.0.0.0/0 md5"
],
"ttl": 30,
"loop_wait": 10,
"retry_timeout": 10,
"maximum_lag_on_failover": 33554432
},
"maintenanceWindows": [
"Mon:01:00-06:00",
"Sat:00:00-04:00",
"05:00-05:15"
]
}
}`),
Postgresql{
TypeMeta: unversioned.TypeMeta{
Kind: "Postgresql",
APIVersion: "acid.zalan.do/v1",
},
Metadata: v1.ObjectMeta{
Name: "acid-testcluster1",
},
Spec: PostgresSpec{
PostgresqlParam: PostgresqlParam{
PgVersion: "9.6",
Parameters: map[string]string{
"shared_buffers": "32MB",
"max_connections": "10",
"log_statement": "all",
},
},
Volume: Volume{
Size: "5Gi",
StorageClass: "SSD",
},
Patroni: Patroni{
InitDB: map[string]string{
"encoding": "UTF8",
"locale": "en_US.UTF-8",
"data-checksums": "true",
},
PgHba: []string{"hostssl all all 0.0.0.0/0 md5", "host all all 0.0.0.0/0 md5"},
TTL: 30,
LoopWait: 10,
RetryTimeout: 10,
MaximumLagOnFailover: 33554432,
},
Resources: Resources{
ResourceRequest: ResourceDescription{CPU: "10m", Memory: "50Mi"},
ResourceLimits: ResourceDescription{CPU: "300m", Memory: "3000Mi"},
},
TeamID: "ACID",
AllowedSourceRanges: []string{"127.0.0.1/32"},
NumberOfInstances: 2,
Users: map[string]UserFlags{"zalando": {"superuser", "createdb"}},
MaintenanceWindows: []MaintenanceWindow{{
Everyday: false,
Weekday: time.Monday,
StartTime: mustParseTime("01:00"),
EndTime: mustParseTime("06:00"),
}, {
Everyday: false,
Weekday: time.Saturday,
StartTime: mustParseTime("00:00"),
EndTime: mustParseTime("04:00"),
},
{
Everyday: true,
Weekday: time.Sunday,
StartTime: mustParseTime("05:00"),
EndTime: mustParseTime("05:15"),
},
},
ClusterName: "testcluster1",
},
Error: nil,
},
[]byte(`{"kind":"Postgresql","apiVersion":"acid.zalan.do/v1","metadata":{"name":"acid-testcluster1","creationTimestamp":null},"spec":{"postgresql":{"version":"9.6","parameters":{"log_statement":"all","max_connections":"10","shared_buffers":"32MB"}},"volume":{"size":"5Gi","storageClass":"SSD"},"patroni":{"initdb":{"data-checksums":"true","encoding":"UTF8","locale":"en_US.UTF-8"},"pg_hba":["hostssl all all 0.0.0.0/0 md5","host all all 0.0.0.0/0 md5"],"ttl":30,"loop_wait":10,"retry_timeout":10,"maximum_lag_on_failover":33554432},"resources":{"requests":{"cpu":"10m","memory":"50Mi"},"limits":{"cpu":"300m","memory":"3000Mi"}},"teamId":"ACID","allowedSourceRanges":["127.0.0.1/32"],"numberOfInstances":2,"users":{"zalando":["superuser","createdb"]},"maintenanceWindows":["Mon:01:00-06:00","Sat:00:00-04:00","05:00-05:15"]}}`), nil},
{
[]byte(`{"kind": "Postgresql","apiVersion": "acid.zalan.do/v1","metadata": {"name": "teapot-testcluster1"}, "spec": {"teamId": "acid"}}`),
Postgresql{
TypeMeta: unversioned.TypeMeta{
Kind: "Postgresql",
APIVersion: "acid.zalan.do/v1",
},
Metadata: v1.ObjectMeta{
Name: "teapot-testcluster1",
},
Spec: PostgresSpec{TeamID: "acid"},
Status: ClusterStatusInvalid,
Error: errors.New("name must match {TEAM}-{NAME} format"),
},
[]byte(`{"kind":"Postgresql","apiVersion":"acid.zalan.do/v1","metadata":{"name":"teapot-testcluster1","creationTimestamp":null},"spec":{"postgresql":{"version":"","parameters":null},"volume":{"size":"","storageClass":""},"patroni":{"initdb":null,"pg_hba":null,"ttl":0,"loop_wait":0,"retry_timeout":0,"maximum_lag_on_failover":0},"resources":{"requests":{"cpu":"","memory":""},"limits":{"cpu":"","memory":""}},"teamId":"acid","allowedSourceRanges":null,"numberOfInstances":0,"users":null},"status":"Invalid"}`), nil},
{[]byte(`{"kind": "Postgresql","apiVersion": "acid.zalan.do/v1"`),
Postgresql{},
[]byte{},
errors.New("unexpected end of JSON input")},
{[]byte(`{"kind":"Postgresql","apiVersion":"acid.zalan.do/v1","metadata":{"name":"acid-testcluster","creationTimestamp":qaz},"spec":{"postgresql":{"version":"","parameters":null},"volume":{"size":"","storageClass":""},"patroni":{"initdb":null,"pg_hba":null,"ttl":0,"loop_wait":0,"retry_timeout":0,"maximum_lag_on_failover":0},"resources":{"requests":{"cpu":"","memory":""},"limits":{"cpu":"","memory":""}},"teamId":"acid","allowedSourceRanges":null,"numberOfInstances":0,"users":null},"status":"Invalid"}`),
Postgresql{},
[]byte{},
errors.New("invalid character 'q' looking for beginning of value")}}
var postgresqlList = []struct {
in []byte
out PostgresqlList
err error
}{
{[]byte(`{"apiVersion":"v1","items":[{"apiVersion":"acid.zalan.do/v1","kind":"Postgresql","metadata":{"labels":{"team":"acid"},"name":"acid-testcluster42","namespace":"default","resourceVersion":"30446957","selfLink":"/apis/acid.zalan.do/v1/namespaces/default/postgresqls/acid-testcluster42","uid":"857cd208-33dc-11e7-b20a-0699041e4b03"},"spec":{"allowedSourceRanges":["185.85.220.0/22"],"numberOfInstances":1,"postgresql":{"version":"9.6"},"teamId":"acid","volume":{"size":"10Gi"}},"status":"Running"}],"kind":"List","metadata":{},"resourceVersion":"","selfLink":""}`),
PostgresqlList{
TypeMeta: unversioned.TypeMeta{
Kind: "List",
APIVersion: "v1",
},
Items: []Postgresql{Postgresql{
TypeMeta: unversioned.TypeMeta{
Kind: "Postgresql",
APIVersion: "acid.zalan.do/v1",
},
Metadata: v1.ObjectMeta{
Name: "acid-testcluster42",
Namespace: "default",
Labels: map[string]string{"team": "acid"},
ResourceVersion: "30446957",
SelfLink: "/apis/acid.zalan.do/v1/namespaces/default/postgresqls/acid-testcluster42",
UID: "857cd208-33dc-11e7-b20a-0699041e4b03",
},
Spec: PostgresSpec{
ClusterName: "testcluster42",
PostgresqlParam: PostgresqlParam{PgVersion: "9.6"},
Volume: Volume{Size: "10Gi"},
TeamID: "acid",
AllowedSourceRanges: []string{"185.85.220.0/22"},
NumberOfInstances: 1,
},
Status: ClusterStatusRunning,
Error: nil,
}},
},
nil},
{[]byte(`{"apiVersion":"v1","items":[{"apiVersion":"acid.zalan.do/v1","kind":"Postgresql","metadata":{"labels":{"team":"acid"},"name":"acid-testcluster42","namespace"`),
PostgresqlList{},
errors.New("unexpected end of JSON input")}}
func mustParseTime(s string) time.Time {
v, err := time.Parse("15:04", s)
if err != nil {
panic(err)
}
return v.UTC()
}
func TestParseTime(t *testing.T) {
for _, tt := range parseTimeTests {
aTime, err := parseTime(tt.in)
if err != nil {
if err.Error() != tt.err.Error() {
t.Errorf("ParseTime expected error: %v, got: %v", tt.err, err)
}
continue
}
if aTime != tt.out {
t.Errorf("Expected time: %v, got: %v", tt.out, aTime)
}
}
}
func TestWeekdayTime(t *testing.T) {
for _, tt := range parseWeekdayTests {
aTime, err := parseWeekday(tt.in)
if err != nil {
if err.Error() != tt.err.Error() {
t.Errorf("ParseWeekday expected error: %v, got: %v", tt.err, err)
}
continue
}
if aTime != tt.out {
t.Errorf("Expected weekday: %v, got: %v", tt.out, aTime)
}
}
}
func TestClusterName(t *testing.T) {
for _, tt := range clusterNames {
name, err := extractClusterName(tt.in, tt.inTeam)
if err != nil && err.Error() != tt.err.Error() {
t.Errorf("extractClusterName expected error: %v, got: %v", tt.err, err)
continue
}
if name != tt.clusterName {
t.Errorf("Expected cluserName: %s, got: %s", tt.clusterName, name)
}
}
}
func TestUnmarshalMaintenanceWindow(t *testing.T) {
for _, tt := range maintenanceWindows {
var m MaintenanceWindow
err := m.UnmarshalJSON(tt.in)
if err != nil && err.Error() != tt.err.Error() {
t.Errorf("MaintenanceWindow unmarshal expected error: %v, got %v", tt.err, err)
continue
}
if tt.err != nil && err == nil {
t.Errorf("Expected error")
continue
}
if !reflect.DeepEqual(m, tt.out) {
t.Errorf("Expected maintenace window: %#v, got: %#v", tt.out, m)
}
}
}
func TestMarshalMaintenanceWindow(t *testing.T) {
for _, tt := range maintenanceWindows {
if tt.err != nil {
continue
}
s, err := tt.out.MarshalJSON()
if err != nil {
t.Errorf("Marshal Error: %v", err)
continue
}
if !bytes.Equal(s, tt.in) {
t.Errorf("Expected Marshal: %s, got: %s", string(tt.in), string(s))
}
}
}
func TestPostgresUnmarshal(t *testing.T) {
for _, tt := range unmarshalCluster {
var cluster Postgresql
err := cluster.UnmarshalJSON(tt.in)
if err != nil {
if err.Error() != tt.err.Error() {
t.Errorf("Unmarshal expected error: %v, got: %v", tt.err, err)
}
continue
}
if !reflect.DeepEqual(cluster, tt.out) {
t.Errorf("Expected Postgresql: %#v, got %#v", tt.out, cluster)
}
}
}
func TestMarshal(t *testing.T) {
for _, tt := range unmarshalCluster {
if tt.err != nil {
continue
}
m, err := json.Marshal(tt.out)
if err != nil {
t.Errorf("Marshal error: %v", err)
continue
}
if !bytes.Equal(m, tt.marshal) {
t.Errorf("Marshal Postgresql expected: %s, got: %s", string(tt.marshal), string(m))
}
}
}
func TestPostgresMeta(t *testing.T) {
for _, tt := range unmarshalCluster {
if a := tt.out.GetObjectKind(); a != &tt.out.TypeMeta {
t.Errorf("GetObjectKindMeta expected: %v, got: %v", tt.out.TypeMeta, a)
}
if a := tt.out.GetObjectMeta(); reflect.DeepEqual(a, tt.out.Metadata) {
t.Errorf("GetObjectMeta expected: %v, got: %v", tt.out.Metadata, a)
}
}
}
func TestUnmarshalPostgresList(t *testing.T) {
for _, tt := range postgresqlList {
var list PostgresqlList
err := list.UnmarshalJSON(tt.in)
if err != nil && err.Error() != tt.err.Error() {
t.Errorf("PostgresqlList unmarshal expected error: %v, got: %v", tt.err, err)
return
}
if !reflect.DeepEqual(list, tt.out) {
t.Errorf("Postgresql list unmarshall expected: %#v, got: %#v", tt.out, list)
}
}
}
func TestPostgresListMeta(t *testing.T) {
for _, tt := range postgresqlList {
if tt.err != nil {
continue
}
if a := tt.out.GetObjectKind(); a != &tt.out.TypeMeta {
t.Errorf("GetObjectKindMeta expected: %v, got: %v", tt.out.TypeMeta, a)
}
if a := tt.out.GetListMeta(); reflect.DeepEqual(a, tt.out.Metadata) {
t.Errorf("GetObjectMeta expected: %v, got: %v", tt.out.Metadata, a)
}
return
}
}

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@ -2,6 +2,8 @@ package spec
import (
"database/sql"
"fmt"
"strings"
"k8s.io/client-go/pkg/api/v1"
"k8s.io/client-go/pkg/types"
@ -72,10 +74,6 @@ type UserSyncer interface {
}
func (n NamespacedName) String() string {
if n.Namespace == "" && n.Name == "" {
return ""
}
return types.NamespacedName(n).String()
}
@ -87,9 +85,16 @@ func (n NamespacedName) MarshalJSON() ([]byte, error) {
// Decode converts a (possibly unqualified) string into the namespaced name object.
func (n *NamespacedName) Decode(value string) error {
name := types.NewNamespacedNameFromString(value)
if value != "" && name == (types.NamespacedName{}) {
if strings.Trim(value, string(types.Separator)) != "" && name == (types.NamespacedName{}) {
name.Name = value
name.Namespace = v1.NamespaceDefault
} else if name.Namespace == "" {
name.Namespace = v1.NamespaceDefault
}
if name.Name == "" {
return fmt.Errorf("Incorrect namespaced name")
}
*n = NamespacedName(name)

55
pkg/spec/types_test.go Normal file
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@ -0,0 +1,55 @@
package spec
import (
"bytes"
"testing"
)
var nnTests = []struct {
s string
expected NamespacedName
expectedMarshal []byte
}{
{`acid/cluster`, NamespacedName{Namespace: "acid", Name: "cluster"}, []byte(`"acid/cluster"`)},
{`/name`, NamespacedName{Namespace: "default", Name: "name"}, []byte(`"default/name"`)},
{`test`, NamespacedName{Namespace: "default", Name: "test"}, []byte(`"default/test"`)},
}
var nnErr = []string{"test/", "/", "", "//"}
func TestNamespacedNameDecode(t *testing.T) {
for _, tt := range nnTests {
var actual NamespacedName
err := actual.Decode(tt.s)
if err != nil {
t.Errorf("Decode error: %v", err)
}
if actual != tt.expected {
t.Errorf("Expected: %v, got %#v", tt.expected, actual)
}
}
}
func TestNamespacedNameMarshal(t *testing.T) {
for _, tt := range nnTests {
var actual NamespacedName
m, err := actual.MarshalJSON()
if err != nil {
t.Errorf("Marshal error: %v", err)
}
if bytes.Equal(m, tt.expectedMarshal) {
t.Errorf("Expected marshal: %v, got %#v", tt.expected, actual)
}
}
}
func TestNamespacedNameError(t *testing.T) {
for _, tt := range nnErr {
var actual NamespacedName
err := actual.Decode(tt)
if err == nil {
t.Errorf("Error expected for '%s', got: %#v", tt, actual)
}
}
}

118
pkg/util/util_test.go Normal file
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@ -0,0 +1,118 @@
package util
import (
"fmt"
"reflect"
"testing"
"k8s.io/client-go/pkg/api/v1"
"github.com/zalando-incubator/postgres-operator/pkg/spec"
)
var pgUsers = []struct {
in spec.PgUser
out string
}{{spec.PgUser{
Name: "test",
Password: "password",
Flags: []string{},
MemberOf: []string{}},
"md587f77988ccb5aa917c93201ba314fcd4"},
{spec.PgUser{
Name: "test",
Password: "md592f413f3974bdf3799bb6fecb5f9f2c6",
Flags: []string{},
MemberOf: []string{}},
"md592f413f3974bdf3799bb6fecb5f9f2c6"}}
var prettyTest = []struct {
in interface{}
out string
}{
{pgUsers, `[{{test password [] []} md587f77988ccb5aa917c93201ba314fcd4} {{test md592f413f3974bdf3799bb6fecb5f9f2c6 [] []} md592f413f3974bdf3799bb6fecb5f9f2c6}]`},
}
var prettyDiffTest = []struct {
inA interface{}
inB interface{}
out string
}{
{[]int{1, 2, 3, 4}, []int{1, 2, 3}, "[]int[4] != []int[3]"},
{[]int{1, 2, 3, 4}, []int{1, 2, 3, 4}, ""},
}
var substractTest = []struct {
inA []string
inB []string
out []string
outEqual bool
}{
{[]string{"a", "b", "c", "d"}, []string{"a", "b", "c", "d"}, []string{}, true},
{[]string{"a", "b", "c", "d"}, []string{"a", "bb", "c", "d"}, []string{"b"}, false},
}
func TestRandomPassword(t *testing.T) {
const pwdLength = 10
pwd := RandomPassword(pwdLength)
if a := len(pwd); a != pwdLength {
t.Errorf("Password length expected: %d, got: %d", pwdLength, a)
}
}
func TestNameFromMeta(t *testing.T) {
meta := v1.ObjectMeta{
Name: "testcluster",
Namespace: "default",
}
expected := spec.NamespacedName{
Name: "testcluster",
Namespace: "default",
}
actual := NameFromMeta(meta)
if actual != expected {
t.Errorf("NameFromMeta expected: %#v, got: %#v", expected, actual)
}
}
func TestPGUserPassword(t *testing.T) {
for _, tt := range pgUsers {
pwd := PGUserPassword(tt.in)
if pwd != tt.out {
t.Errorf("PgUserPassword expected: %s, got: %s", tt.out, pwd)
}
}
}
func TestPretty(t *testing.T) {
for _, tt := range prettyTest {
if actual := Pretty(tt.in); fmt.Sprintf("%v", actual) != tt.out {
t.Errorf("Pretty expected: %s, got: %s", tt.out, actual)
}
}
}
func TestPrettyDiff(t *testing.T) {
for _, tt := range prettyDiffTest {
if actual := PrettyDiff(tt.inA, tt.inB); actual != tt.out {
t.Errorf("PrettyDiff expected: %s, got: %s", tt.out, actual)
}
}
}
func TestSubstractSlices(t *testing.T) {
for _, tt := range substractTest {
actualRes, actualEqual := SubstractStringSlices(tt.inA, tt.inB)
if actualEqual != tt.outEqual {
t.Errorf("SubstractStringSlices expected equal: %t, got: %t", tt.outEqual, actualEqual)
}
if len(actualRes) == 0 && len(tt.out) == 0 {
continue
} else if !reflect.DeepEqual(actualRes, tt.out) {
t.Errorf("SubstractStringSlices expected res: %v, got: %v", tt.out, actualRes)
}
}
}