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// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build go1.13 && (linux || darwin)
// +build go1.13
// +build linux darwin
package pool
import (
"context"
"sort"
"testing"
"time"
"golang.org/x/build/internal/cloud"
)
func canceledContext() context.Context {
ctx, cancel := context.WithCancel(context.Background())
cancel()
return ctx
}
func TestLedgerReserveResources(t *testing.T) {
testCases := []struct {
desc string
ctx context.Context
instName string
vmType string
instTypes []*cloud.InstanceType
cpuLimit int64
cpuUsed int64
wantErr bool
}{
{
desc: "success",
ctx: context.Background(),
instName: "small-instance",
vmType: "aa.small",
instTypes: []*cloud.InstanceType{
&cloud.InstanceType{
Type: "aa.small",
CPU: 5,
},
},
cpuLimit: 20,
cpuUsed: 5,
wantErr: false,
},
{
desc: "cancelled-context",
ctx: canceledContext(),
instName: "small-instance",
vmType: "aa.small",
instTypes: []*cloud.InstanceType{
&cloud.InstanceType{
Type: "aa.small",
CPU: 5,
},
},
cpuLimit: 20,
cpuUsed: 20,
wantErr: true,
},
{
desc: "unknown-instance-type",
ctx: context.Background(),
instName: "small-instance",
vmType: "aa.small",
instTypes: []*cloud.InstanceType{},
cpuLimit: 20,
cpuUsed: 5,
wantErr: true,
},
{
desc: "instance-already-exists",
ctx: context.Background(),
instName: "large-instance",
vmType: "aa.small",
instTypes: []*cloud.InstanceType{
&cloud.InstanceType{
Type: "aa.small",
CPU: 5,
},
},
cpuLimit: 20,
cpuUsed: 5,
wantErr: true,
},
}
for _, tc := range testCases {
t.Run(tc.desc, func(t *testing.T) {
l := &ledger{
cpuLimit: tc.cpuLimit,
cpuUsed: tc.cpuUsed,
entries: map[string]*entry{
"large-instance": &entry{},
},
types: make(map[string]*cloud.InstanceType),
}
l.UpdateInstanceTypes(tc.instTypes)
gotErr := l.ReserveResources(tc.ctx, tc.instName, tc.vmType)
if (gotErr != nil) != tc.wantErr {
t.Errorf("ledger.reserveResources(%+v, %s, %s) = %s; want error %t", tc.ctx, tc.instName, tc.vmType, gotErr, tc.wantErr)
}
})
}
}
func TestLedgerReleaseResources(t *testing.T) {
testCases := []struct {
desc string
instName string
entry *entry
cpuUsed int64
wantCPUUsed int64
wantErr bool
}{
{
desc: "success",
instName: "inst-x",
entry: &entry{
instanceName: "inst-x",
vCPUCount: 10,
},
cpuUsed: 20,
wantCPUUsed: 10,
wantErr: false,
},
{
desc: "entry-not-found",
instName: "inst-x",
entry: &entry{
instanceName: "inst-w",
vCPUCount: 10,
},
cpuUsed: 20,
wantCPUUsed: 20,
wantErr: true,
},
}
for _, tc := range testCases {
t.Run(tc.desc, func(t *testing.T) {
l := &ledger{
cpuUsed: tc.cpuUsed,
entries: map[string]*entry{
tc.entry.instanceName: tc.entry,
},
}
gotErr := l.releaseResources(tc.instName)
if (gotErr != nil) != tc.wantErr {
t.Errorf("ledger.releaseResources(%s) = %s; want error %t", tc.instName, gotErr, tc.wantErr)
}
if l.cpuUsed != tc.wantCPUUsed {
t.Errorf("ledger.cpuUsed = %d; wanted %d", l.cpuUsed, tc.wantCPUUsed)
}
})
}
}
func TestLedgerAllocateCPU(t *testing.T) {
testCases := []struct {
desc string
numCPU int64
cpuLimit int64
cpuUsed int64
instName string
wantReserve bool
wantCPUUsed int64
}{
{
desc: "reservation-success",
numCPU: 10,
cpuLimit: 10,
cpuUsed: 0,
instName: "chacha",
wantReserve: true,
wantCPUUsed: 10,
},
{
desc: "failed-to-reserve",
numCPU: 10,
cpuLimit: 5,
cpuUsed: 0,
instName: "pasa",
wantReserve: false,
wantCPUUsed: 0,
},
{
desc: "invalid-cpu-count",
numCPU: 0,
cpuLimit: 50,
cpuUsed: 20,
instName: "double",
wantReserve: false,
wantCPUUsed: 20,
},
}
for _, tc := range testCases {
t.Run(tc.desc, func(t *testing.T) {
l := &ledger{
entries: make(map[string]*entry),
cpuLimit: tc.cpuLimit,
cpuUsed: tc.cpuUsed,
}
gotReserve := l.allocateCPU(tc.numCPU, tc.instName)
if gotReserve != tc.wantReserve {
t.Errorf("ledger.allocateCPU(%d) = %v, want %v", tc.numCPU, gotReserve, tc.wantReserve)
}
if l.cpuUsed != tc.wantCPUUsed {
t.Errorf("ledger.cpuUsed = %d; want %d", l.cpuUsed, tc.wantCPUUsed)
}
if _, ok := l.entries[tc.instName]; tc.wantReserve && !ok {
t.Fatalf("ledger.entries[%s] = nil; want it to exist", tc.instName)
}
if e, _ := l.entries[tc.instName]; tc.wantReserve && e.vCPUCount != tc.numCPU {
t.Fatalf("ledger.entries[%s].vCPUCount = %d; want %d", tc.instName, e.vCPUCount, tc.numCPU)
}
})
}
}
func TestLedgerDeallocateCPU(t *testing.T) {
testCases := []struct {
desc string
numCPU int64
cpuUsed int64
wantCPUUsed int64
}{
{
desc: "release-success",
numCPU: 10,
cpuUsed: 10,
wantCPUUsed: 0,
},
{
desc: "failed-to-release",
numCPU: 10,
cpuUsed: 5,
wantCPUUsed: 5,
},
{
desc: "invalid-cpu-count",
numCPU: 0,
cpuUsed: 0,
wantCPUUsed: 0,
},
}
for _, tc := range testCases {
t.Run(tc.desc, func(t *testing.T) {
l := &ledger{
cpuUsed: tc.cpuUsed,
}
l.deallocateCPU(tc.numCPU)
if l.cpuUsed != tc.wantCPUUsed {
t.Errorf("ledger.cpuUsed = %d; want %d", l.cpuUsed, tc.wantCPUUsed)
}
})
}
}
func TestLedgerUpdateReservation(t *testing.T) {
testCases := []struct {
desc string
instName string
instID string
entry *entry
wantErr bool
}{
{
desc: "success",
instName: "inst-x",
instID: "id-foo-x",
entry: &entry{
instanceName: "inst-x",
},
wantErr: false,
},
{
desc: "success",
instName: "inst-x",
instID: "id-foo-x",
entry: &entry{
instanceName: "inst-w",
},
wantErr: true,
},
}
for _, tc := range testCases {
t.Run(tc.desc, func(t *testing.T) {
l := &ledger{
entries: map[string]*entry{
tc.entry.instanceName: tc.entry,
},
}
if gotErr := l.UpdateReservation(tc.instName, tc.instID); (gotErr != nil) != tc.wantErr {
t.Errorf("ledger.updateReservation(%s, %s) = %s; want error %t", tc.instName, tc.instID, gotErr, tc.wantErr)
}
e, ok := l.entries[tc.instName]
if !tc.wantErr && !ok {
t.Fatalf("ledger.entries[%s] does not exist", tc.instName)
}
if !tc.wantErr && e.createdAt.IsZero() {
t.Errorf("ledger.entries[%s].createdAt = %s; time not set", tc.instName, e.createdAt)
}
})
}
}
func TestLedgerRemove(t *testing.T) {
testCases := []struct {
desc string
instName string
entry *entry
cpuUsed int64
wantCPUUsed int64
wantErr bool
}{
{
desc: "success",
instName: "inst-x",
entry: &entry{
instanceName: "inst-x",
vCPUCount: 10,
},
cpuUsed: 100,
wantCPUUsed: 90,
wantErr: false,
},
{
desc: "entry-does-not-exist",
instName: "inst-x",
entry: &entry{
instanceName: "inst-w",
vCPUCount: 10,
},
cpuUsed: 100,
wantCPUUsed: 100,
wantErr: true,
},
}
for _, tc := range testCases {
t.Run(tc.desc, func(t *testing.T) {
l := &ledger{
cpuUsed: tc.cpuUsed,
entries: map[string]*entry{
tc.entry.instanceName: tc.entry,
},
}
if gotErr := l.Remove(tc.instName); (gotErr != nil) != tc.wantErr {
t.Errorf("ledger.remove(%s) = %s; want error %t", tc.instName, gotErr, tc.wantErr)
}
if gotE, ok := l.entries[tc.instName]; ok {
t.Errorf("ledger.entries[%s] = %+v; want it not to exist", tc.instName, gotE)
}
if l.cpuUsed != tc.wantCPUUsed {
t.Errorf("ledger.cpuUsed = %d; want %d", l.cpuUsed, tc.wantCPUUsed)
}
})
}
}
func TestInstanceID(t *testing.T) {
testCases := []struct {
desc string
instName string
entry *entry
cpuUsed int64
wantCPUUsed int64
wantErr bool
}{
{
desc: "success",
instName: "inst-x",
entry: &entry{
instanceName: "inst-x",
vCPUCount: 10,
},
cpuUsed: 100,
wantCPUUsed: 90,
wantErr: false,
},
{
desc: "entry-does-not-exist",
instName: "inst-x",
entry: &entry{
instanceName: "inst-w",
vCPUCount: 10,
},
cpuUsed: 100,
wantCPUUsed: 100,
wantErr: true,
},
}
for _, tc := range testCases {
t.Run(tc.desc, func(t *testing.T) {
l := &ledger{
cpuUsed: tc.cpuUsed,
entries: map[string]*entry{
tc.entry.instanceName: tc.entry,
},
}
if gotErr := l.Remove(tc.instName); (gotErr != nil) != tc.wantErr {
t.Errorf("ledger.remove(%s) = %s; want error %t", tc.instName, gotErr, tc.wantErr)
}
if gotE, ok := l.entries[tc.instName]; ok {
t.Errorf("ledger.entries[%s] = %+v; want it not to exist", tc.instName, gotE)
}
if l.cpuUsed != tc.wantCPUUsed {
t.Errorf("ledger.cpuUsed = %d; want %d", l.cpuUsed, tc.wantCPUUsed)
}
})
}
}
func TestLedgerSetCPULimit(t *testing.T) {
l := &ledger{}
var want int64 = 300
l.SetCPULimit(300)
if l.cpuLimit != want {
t.Errorf("ledger.cpuLimit = %d; want %d", l.cpuLimit, want)
}
}
func TestLedgerUpdateInstanceTypes(t *testing.T) {
testCases := []struct {
desc string
types []*cloud.InstanceType
}{
{"no-type", []*cloud.InstanceType{}},
{"single-type", []*cloud.InstanceType{&cloud.InstanceType{"x", 15}}},
}
for _, tc := range testCases {
t.Run(tc.desc, func(t *testing.T) {
l := newLedger()
l.UpdateInstanceTypes(tc.types)
for _, it := range tc.types {
if gotV, ok := l.types[it.Type]; !ok || gotV != it {
t.Errorf("ledger.types[%s] = %v; want %v", it.Type, gotV, it)
}
}
if len(l.types) != len(tc.types) {
t.Errorf("len(ledger.types) = %d; want %d", len(l.types), len(tc.types))
}
})
}
}
func TestLedgerResources(t *testing.T) {
testCases := []struct {
desc string
entries map[string]*entry
cpuCount int64
cpuLimit int64
wantInstCount int64
}{
{"no-instances", map[string]*entry{}, 2, 3, 0},
{"single-instance", map[string]*entry{"x": &entry{}}, 2, 3, 1},
}
for _, tc := range testCases {
t.Run(tc.desc, func(t *testing.T) {
l := &ledger{
entries: tc.entries,
cpuLimit: tc.cpuLimit,
cpuUsed: tc.cpuCount,
}
gotR := l.Resources()
if gotR.InstCount != tc.wantInstCount {
t.Errorf("ledger.instCount = %d; want %d", gotR.InstCount, tc.wantInstCount)
}
if gotR.CPUUsed != tc.cpuCount {
t.Errorf("ledger.cpuCount = %d; want %d", gotR.CPUUsed, tc.cpuCount)
}
if gotR.CPULimit != tc.cpuLimit {
t.Errorf("ledger.cpuLimit = %d; want %d", gotR.CPULimit, tc.cpuLimit)
}
})
}
}
func TestLedgerResourceTime(t *testing.T) {
ct := time.Now()
testCases := []struct {
desc string
entries map[string]*entry
}{
{"no-instances", map[string]*entry{}},
{"single-instance", map[string]*entry{
"inst-x": &entry{
createdAt: ct,
instanceID: "id-x",
instanceName: "inst-x",
vCPUCount: 1,
},
}},
{"multiple-instances", map[string]*entry{
"inst-z": &entry{
createdAt: ct.Add(2 * time.Second),
instanceID: "id-z",
instanceName: "inst-z",
vCPUCount: 1,
},
"inst-y": &entry{
createdAt: ct.Add(time.Second),
instanceID: "id-y",
instanceName: "inst-y",
vCPUCount: 1,
},
"inst-x": &entry{
createdAt: ct,
instanceID: "id-x",
instanceName: "inst-x",
vCPUCount: 1,
},
}},
}
for _, tc := range testCases {
t.Run(tc.desc, func(t *testing.T) {
l := &ledger{
entries: tc.entries,
}
gotRT := l.ResourceTime()
if !sort.SliceIsSorted(gotRT, func(i, j int) bool { return gotRT[i].Creation.Before(gotRT[j].Creation) }) {
t.Errorf("resource time is not sorted")
}
if len(l.entries) != len(gotRT) {
t.Errorf("mismatch in items returned")
}
for _, rt := range gotRT {
delete(l.entries, rt.Name)
}
if len(l.entries) != 0 {
t.Errorf("mismatch")
}
})
}
}