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region_test.go
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package autospotting
import (
"math"
"reflect"
"testing"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/autoscaling"
"github.com/aws/aws-sdk-go/service/cloudformation"
"github.com/aws/aws-sdk-go/service/ec2"
ec2instancesinfo "github.com/cristim/ec2-instances-info"
"github.com/davecgh/go-spew/spew"
)
func Test_region_enabled(t *testing.T) {
tests := []struct {
name string
region string
allowed string
want bool
}{
{
name: "No regions given in the filter",
region: "us-east-1",
allowed: "",
want: true,
},
{
name: "Running in a different region than one allowed one",
region: "us-east-1",
allowed: "eu-west-1",
want: false,
},
{
name: "Running in a different region than a list of allowed ones",
region: "us-east-1",
allowed: "eu-west-1 ca-central-1",
want: false,
},
{
name: "Running in a region from the allowed ones",
region: "us-east-1",
allowed: "us-east-1 eu-west-1",
want: true,
},
{
name: "Comma-separated allowed regions",
region: "us-east-1",
allowed: "us-east-1,eu-west-1",
want: true,
},
{
name: "Comma and whitespace-separated allowed regions",
region: "us-east-1",
allowed: "us-east-1, eu-west-1",
want: true,
},
{
name: "Whitespace-and-comma-separated allowed regions",
region: "us-east-1",
allowed: "us-east-1, eu-west-1",
want: true,
},
{
name: "Region globs matching",
region: "us-east-1",
allowed: "us-*, eu-*",
want: true,
},
{
name: "Region globs not matching",
region: "us-east-1",
allowed: "ap-*, eu-*",
want: false,
},
{
name: "Region globs without dash matching",
region: "us-east-1",
allowed: "us*, eu*",
want: true,
},
{
name: "Region globs without dash not matching",
region: "us-east-1",
allowed: "ap*, eu*",
want: false,
},
{
name: "Non-separated allowed regions",
region: "us-east-1",
allowed: "us-east-1eu-west-1",
want: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
r := ®ion{
name: tt.region,
conf: &Config{
Regions: tt.allowed,
},
}
if got := r.enabled(); got != tt.want {
t.Errorf("region.enabled() = %v, want %v", got, tt.want)
}
})
}
}
func TestAsgFiltersSetupOnRegion(t *testing.T) {
tests := []struct {
name string
want []Tag
tregion *region
}{
{
name: "No tags specified",
want: []Tag{{Key: "spot-enabled", Value: "true"}},
tregion: ®ion{
conf: &Config{},
},
},
{
name: "No tags specified",
want: []Tag{{Key: "spot-enabled", Value: "true"}, {Key: "environment", Value: "dev"}},
tregion: ®ion{
conf: &Config{
FilterByTags: "spot-enabled=true, environment=dev",
},
},
},
{
name: "No tags specified",
want: []Tag{{Key: "spot-enabled", Value: "true"}, {Key: "environment", Value: "dev"}, {Key: "team", Value: "interactive"}},
tregion: ®ion{
conf: &Config{
FilterByTags: "spot-enabled=true, environment=dev,team=interactive",
},
},
},
}
for _, tt := range tests {
tt.tregion.setupAsgFilters()
if !reflect.DeepEqual(tt.want, tt.tregion.tagsToFilterASGsBy) {
t.Errorf("region.setupAsgFilters() = %v, want %v", tt.tregion.tagsToFilterASGsBy, tt.want)
}
}
}
func TestOnDemandPriceMultiplier(t *testing.T) {
tests := []struct {
multiplier float64
want float64
}{
{
multiplier: 1.0,
want: 0.044,
},
{
multiplier: 2.0,
want: 0.088,
},
{
multiplier: 0.99,
want: 0.04356,
},
}
for _, tt := range tests {
cfg := &Config{
InstanceData: &ec2instancesinfo.InstanceData{
0: {
InstanceType: "m1.small",
Pricing: map[string]ec2instancesinfo.RegionPrices{
"us-east-1": {
Linux: ec2instancesinfo.LinuxPricing{
OnDemand: 0.044,
},
},
},
},
},
AutoScalingConfig: AutoScalingConfig{
OnDemandPriceMultiplier: tt.multiplier,
},
}
r := region{
name: "us-east-1",
conf: cfg,
services: connections{
ec2: mockEC2{
dspho: &ec2.DescribeSpotPriceHistoryOutput{
SpotPriceHistory: []*ec2.SpotPrice{},
},
dspherr: nil,
},
}}
r.determineInstanceTypeInformation(cfg)
actualPrice := r.instanceTypeInformation["m1.small"].pricing.onDemand
if math.Abs(actualPrice-tt.want) > 0.000001 {
t.Errorf("multiplier = %.2f, pricing.onDemand = %.5f, want %.5f",
tt.multiplier, actualPrice, tt.want)
}
}
}
func TestDefaultASGFiltering(t *testing.T) {
tests := []struct {
tregion *region
expected []Tag
}{
{
expected: []Tag{{Key: "spot-enabled", Value: "true"}},
tregion: ®ion{
conf: &Config{
FilterByTags: "bob",
},
},
},
{
expected: []Tag{{Key: "bob", Value: "value"}},
tregion: ®ion{
conf: &Config{
FilterByTags: "bob=value",
},
},
},
{
expected: []Tag{{Key: "spot-enabled", Value: "true"}, {Key: "team", Value: "interactive"}},
tregion: ®ion{
conf: &Config{
FilterByTags: "spot-enabled=true,team=interactive",
},
},
},
}
for _, tt := range tests {
tt.tregion.setupAsgFilters()
for _, tag := range tt.expected {
matchingTag := false
for _, setTag := range tt.tregion.tagsToFilterASGsBy {
if tag.Key == setTag.Key && tag.Value == setTag.Value {
matchingTag = true
}
}
if !matchingTag {
t.Errorf("tags not correctly filtered = %v, want %v", tt.tregion.tagsToFilterASGsBy, tt.expected)
}
}
}
}
func TestFilterAsgs(t *testing.T) {
// Test invalid regular expression
var nullSlice []string
stackName := "dummyStackName"
stackStatus := "UPDATE_COMPLETE"
tests := []struct {
name string
want []string
tregion *region
}{
{
name: "Test with single filter",
want: []string{"asg1", "asg2", "asg3", "asg4"},
tregion: ®ion{
tagsToFilterASGsBy: []Tag{{Key: "spot-enabled", Value: "true"}},
conf: &Config{},
services: connections{
autoScaling: mockASG{
dasgo: &autoscaling.DescribeAutoScalingGroupsOutput{
AutoScalingGroups: []*autoscaling.Group{
{
Tags: []*autoscaling.TagDescription{
{Key: aws.String("environment"), Value: aws.String("dev"), ResourceId: aws.String("asg1")},
{Key: aws.String("spot-enabled"), Value: aws.String("true"), ResourceId: aws.String("asg1")},
},
AutoScalingGroupName: aws.String("asg1"),
},
{
Tags: []*autoscaling.TagDescription{
{Key: aws.String("environment"), Value: aws.String("dev"), ResourceId: aws.String("asg2")},
{Key: aws.String("spot-enabled"), Value: aws.String("true"), ResourceId: aws.String("asg2")},
},
AutoScalingGroupName: aws.String("asg2"),
},
{
Tags: []*autoscaling.TagDescription{
{Key: aws.String("environment"), Value: aws.String("qa"), ResourceId: aws.String("asg3")},
{Key: aws.String("spot-enabled"), Value: aws.String("true"), ResourceId: aws.String("asg3")},
},
AutoScalingGroupName: aws.String("asg3"),
},
{
Tags: []*autoscaling.TagDescription{
{Key: aws.String("environment"), Value: aws.String("qa"), ResourceId: aws.String("asg4")},
{Key: aws.String("spot-enabled"), Value: aws.String("true"), ResourceId: aws.String("asg4")},
},
AutoScalingGroupName: aws.String("asg4"),
},
},
},
},
},
},
},
{
name: "Test opt-out mode",
// Run on all groups except for those tagged with spot-enabled=false
want: []string{"asg2", "asg3"},
tregion: ®ion{
tagsToFilterASGsBy: []Tag{{Key: "spot-enabled", Value: "false"}},
conf: &Config{TagFilteringMode: "opt-out"},
services: connections{
autoScaling: mockASG{
dasgo: &autoscaling.DescribeAutoScalingGroupsOutput{
AutoScalingGroups: []*autoscaling.Group{
{
Tags: []*autoscaling.TagDescription{
{Key: aws.String("environment"), Value: aws.String("dev"), ResourceId: aws.String("asg1")},
{Key: aws.String("spot-enabled"), Value: aws.String("false"), ResourceId: aws.String("asg1")},
},
AutoScalingGroupName: aws.String("asg1"),
},
{
Tags: []*autoscaling.TagDescription{
{Key: aws.String("environment"), Value: aws.String("dev"), ResourceId: aws.String("asg2")},
{Key: aws.String("spot-enabled"), Value: aws.String("true"), ResourceId: aws.String("asg2")},
},
AutoScalingGroupName: aws.String("asg2"),
},
{
Tags: []*autoscaling.TagDescription{
{Key: aws.String("environment"), Value: aws.String("qa"), ResourceId: aws.String("asg3")},
},
AutoScalingGroupName: aws.String("asg3"),
},
{
Tags: []*autoscaling.TagDescription{
{Key: aws.String("environment"), Value: aws.String("qa"), ResourceId: aws.String("asg4")},
{Key: aws.String("spot-enabled"), Value: aws.String("false"), ResourceId: aws.String("asg4")},
},
AutoScalingGroupName: aws.String("asg4"),
},
},
},
},
},
},
},
{
name: "Test opt-out mode with multiple tag filters",
// Run on all groups except for those tagged with spot-enabled=false and
// environment=dev, regardless of other tags that may be set
want: []string{"asg2", "asg3", "asg4"},
tregion: ®ion{
tagsToFilterASGsBy: []Tag{
{Key: "spot-enabled", Value: "false"},
{Key: "environment", Value: "dev"},
},
conf: &Config{TagFilteringMode: "opt-out"},
services: connections{
autoScaling: mockASG{
dasgo: &autoscaling.DescribeAutoScalingGroupsOutput{
AutoScalingGroups: []*autoscaling.Group{
{
Tags: []*autoscaling.TagDescription{
{Key: aws.String("spot-enabled"), Value: aws.String("false"), ResourceId: aws.String("asg1")},
{Key: aws.String("environment"), Value: aws.String("dev"), ResourceId: aws.String("asg1")},
{Key: aws.String("team"), Value: aws.String("awesome"), ResourceId: aws.String("asg1")},
},
AutoScalingGroupName: aws.String("asg1"),
},
{
Tags: []*autoscaling.TagDescription{
{Key: aws.String("environment"), Value: aws.String("dev"), ResourceId: aws.String("asg2")},
{Key: aws.String("spot-enabled"), Value: aws.String("true"), ResourceId: aws.String("asg2")},
{Key: aws.String("team"), Value: aws.String("awesome"), ResourceId: aws.String("asg2")},
},
AutoScalingGroupName: aws.String("asg2"),
},
{
Tags: []*autoscaling.TagDescription{
{Key: aws.String("spot-enabled"), Value: aws.String("false"), ResourceId: aws.String("asg3")},
{Key: aws.String("environment"), Value: aws.String("qa"), ResourceId: aws.String("asg3")},
{Key: aws.String("team"), Value: aws.String("awesome"), ResourceId: aws.String("asg3")},
},
AutoScalingGroupName: aws.String("asg3"),
},
{
Tags: []*autoscaling.TagDescription{
{Key: aws.String("environment"), Value: aws.String("qa"), ResourceId: aws.String("asg4")},
{Key: aws.String("spot-enabled"), Value: aws.String("true"), ResourceId: aws.String("asg4")},
{Key: aws.String("team"), Value: aws.String("awesome"), ResourceId: aws.String("asg4")},
},
AutoScalingGroupName: aws.String("asg4"),
},
},
},
},
},
},
},
{
name: "Test with two filters",
want: []string{"asg3", "asg4"},
tregion: ®ion{
tagsToFilterASGsBy: []Tag{{Key: "spot-enabled", Value: "true"}, {Key: "environment", Value: "qa"}},
conf: &Config{},
services: connections{
autoScaling: mockASG{
dasgo: &autoscaling.DescribeAutoScalingGroupsOutput{
AutoScalingGroups: []*autoscaling.Group{
{
Tags: []*autoscaling.TagDescription{
{Key: aws.String("environment"), Value: aws.String("dev"), ResourceId: aws.String("asg1")},
{Key: aws.String("spot-enabled"), Value: aws.String("true"), ResourceId: aws.String("asg1")},
},
AutoScalingGroupName: aws.String("asg1"),
},
{
Tags: []*autoscaling.TagDescription{
{Key: aws.String("environment"), Value: aws.String("dev"), ResourceId: aws.String("asg2")},
{Key: aws.String("spot-enabled"), Value: aws.String("true"), ResourceId: aws.String("asg2")},
},
AutoScalingGroupName: aws.String("asg2"),
},
{
Tags: []*autoscaling.TagDescription{
{Key: aws.String("environment"), Value: aws.String("qa"), ResourceId: aws.String("asg3")},
{Key: aws.String("spot-enabled"), Value: aws.String("true"), ResourceId: aws.String("asg3")},
},
AutoScalingGroupName: aws.String("asg3"),
},
{
Tags: []*autoscaling.TagDescription{
{Key: aws.String("environment"), Value: aws.String("qa"), ResourceId: aws.String("asg4")},
{Key: aws.String("spot-enabled"), Value: aws.String("true"), ResourceId: aws.String("asg4")},
},
AutoScalingGroupName: aws.String("asg4"),
},
},
},
},
},
},
},
{
name: "Test with multiple secondary filter",
want: []string{"asg4"},
tregion: ®ion{
tagsToFilterASGsBy: []Tag{
{Key: "spot-enabled", Value: "true"},
{Key: "environment", Value: "qa"},
{Key: "team", Value: "interactive"},
},
conf: &Config{},
services: connections{
autoScaling: mockASG{
dasgo: &autoscaling.DescribeAutoScalingGroupsOutput{
AutoScalingGroups: []*autoscaling.Group{
{
Tags: []*autoscaling.TagDescription{
{Key: aws.String("environment"), Value: aws.String("dev"), ResourceId: aws.String("asg1")},
{Key: aws.String("spot-enabled"), Value: aws.String("true"), ResourceId: aws.String("asg1")},
},
AutoScalingGroupName: aws.String("asg1"),
},
{
Tags: []*autoscaling.TagDescription{
{Key: aws.String("environment"), Value: aws.String("dev"), ResourceId: aws.String("asg2")},
{Key: aws.String("spot-enabled"), Value: aws.String("true"), ResourceId: aws.String("asg2")},
},
AutoScalingGroupName: aws.String("asg2"),
},
{
Tags: []*autoscaling.TagDescription{
{Key: aws.String("environment"), Value: aws.String("qa"), ResourceId: aws.String("asg3")},
{Key: aws.String("spot-enabled"), Value: aws.String("true"), ResourceId: aws.String("asg3")},
},
AutoScalingGroupName: aws.String("asg3"),
},
{
Tags: []*autoscaling.TagDescription{
{Key: aws.String("environment"), Value: aws.String("qa"), ResourceId: aws.String("asg4")},
{Key: aws.String("spot-enabled"), Value: aws.String("true"), ResourceId: aws.String("asg4")},
{Key: aws.String("team"), Value: aws.String("interactive"), ResourceId: aws.String("asg4")},
},
AutoScalingGroupName: aws.String("asg4"),
},
},
},
},
},
},
},
{
name: "Test with multiple secondary filters with glob expression",
tregion: ®ion{
tagsToFilterASGsBy: []Tag{
{Key: "spot-enabled", Value: "true"},
{Key: "environment", Value: "sandbox*"},
{Key: "team", Value: "interactive"},
},
conf: &Config{},
services: connections{
autoScaling: mockASG{
dasgo: &autoscaling.DescribeAutoScalingGroupsOutput{
AutoScalingGroups: []*autoscaling.Group{
{
Tags: []*autoscaling.TagDescription{
{Key: aws.String("environment"), Value: aws.String("customer1-dev"), ResourceId: aws.String("asg1")},
{Key: aws.String("spot-enabled"), Value: aws.String("true"), ResourceId: aws.String("asg1")},
},
AutoScalingGroupName: aws.String("asg1"),
},
{
Tags: []*autoscaling.TagDescription{
{Key: aws.String("environment"), Value: aws.String("sandbox-dev"), ResourceId: aws.String("asg2")},
{Key: aws.String("spot-enabled"), Value: aws.String("true"), ResourceId: aws.String("asg2")},
{Key: aws.String("team"), Value: aws.String("interactive"), ResourceId: aws.String("asg2")},
},
AutoScalingGroupName: aws.String("asg2"),
},
{
Tags: []*autoscaling.TagDescription{
{Key: aws.String("environment"), Value: aws.String("qa"), ResourceId: aws.String("asg3")},
{Key: aws.String("spot-enabled"), Value: aws.String("true"), ResourceId: aws.String("asg3")},
},
AutoScalingGroupName: aws.String("asg3"),
},
{
Tags: []*autoscaling.TagDescription{
{Key: aws.String("environment"), Value: aws.String("sandbox-qa"), ResourceId: aws.String("asg4")},
{Key: aws.String("spot-enabled"), Value: aws.String("true"), ResourceId: aws.String("asg4")},
{Key: aws.String("team"), Value: aws.String("interactive"), ResourceId: aws.String("asg4")},
},
AutoScalingGroupName: aws.String("asg4"),
},
},
},
},
},
},
want: []string{"asg2", "asg4"},
},
{
name: "Test filters with invalid glob expression",
tregion: ®ion{
tagsToFilterASGsBy: []Tag{
{Key: "spot-enabled", Value: "true"},
{Key: "environment", Value: "($"},
{Key: "team", Value: "interactive"},
},
conf: &Config{},
services: connections{
autoScaling: mockASG{
dasgo: &autoscaling.DescribeAutoScalingGroupsOutput{
AutoScalingGroups: []*autoscaling.Group{
{
Tags: []*autoscaling.TagDescription{
{Key: aws.String("environment"), Value: aws.String("customer1-dev"), ResourceId: aws.String("asg1")},
{Key: aws.String("spot-enabled"), Value: aws.String("true"), ResourceId: aws.String("asg1")},
},
AutoScalingGroupName: aws.String("asg1"),
},
{
Tags: []*autoscaling.TagDescription{
{Key: aws.String("spot-enabled"), Value: aws.String("true"), ResourceId: aws.String("asg2")},
{Key: aws.String("team"), Value: aws.String("interactive"), ResourceId: aws.String("asg2")},
},
AutoScalingGroupName: aws.String("asg2"),
},
},
},
},
},
},
want: nullSlice,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
r := tt.tregion
r.services.cloudFormation = mockCloudFormation{
dso: &cloudformation.DescribeStacksOutput{
Stacks: []*cloudformation.Stack{
{
StackName: &stackName,
StackStatus: &stackStatus,
},
},
},
}
r.scanForEnabledAutoScalingGroups()
var asgNames []string
for _, name := range r.enabledASGs {
asgNames = append(asgNames, name.name)
}
if !reflect.DeepEqual(tt.want, asgNames) {
t.Errorf("region.scanForEnabledAutoScalingGroups() = %v, want %v", asgNames, tt.want)
}
})
}
}
func TestIsStackUpdating(t *testing.T) {
stackName := "dummyStackName"
tests := []struct {
name string
region *region
want bool
}{
{
name: "Stack is not updating",
region: ®ion{
services: connections{
cloudFormation: mockCloudFormation{
dso: &cloudformation.DescribeStacksOutput{
Stacks: []*cloudformation.Stack{
{
StackName: &stackName,
StackStatus: aws.String("UPDATE_COMPLETE"),
},
},
},
},
},
},
want: false,
},
{
name: "Stack is updating",
region: ®ion{
services: connections{
cloudFormation: mockCloudFormation{
dso: &cloudformation.DescribeStacksOutput{
Stacks: []*cloudformation.Stack{
{
StackName: &stackName,
StackStatus: aws.String("UPDATE_IN_PROGRESS"),
},
},
},
},
},
},
want: true,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if _, got := tt.region.isStackUpdating(&stackName); got != tt.want {
t.Errorf("Error in isStackUpdating: expected %v actual %v", tt.want, got)
}
})
}
}
func Test_region_scanInstances(t *testing.T) {
tests := []struct {
name string
regionInfo *region
wantErr bool
wantInstances instances
}{
{
name: "region with a single instance",
regionInfo: ®ion{
name: "us-east-1",
conf: &Config{
AutoScalingConfig: AutoScalingConfig{
MinOnDemandNumber: 2,
},
},
services: connections{
ec2: mockEC2{
diperr: nil,
dio: &ec2.DescribeInstancesOutput{
Reservations: []*ec2.Reservation{
{
Instances: []*ec2.Instance{
{
InstanceId: aws.String("id-1"),
InstanceType: aws.String("typeX"),
},
},
},
},
},
},
},
},
wantErr: false,
wantInstances: makeInstancesWithCatalog(
instanceMap{
"id-1": {
Instance: &ec2.Instance{
InstanceId: aws.String("id-1"),
InstanceType: aws.String("typeX"),
},
},
},
),
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
r := tt.regionInfo
err := r.scanInstances()
if (err != nil) != tt.wantErr {
t.Errorf("region.scanInstances() error = %v, wantErr %v", err, tt.wantErr)
}
for inst := range r.instances.instances() {
wantedInstance := tt.wantInstances.get(*inst.InstanceId).Instance
if !reflect.DeepEqual(inst.Instance, wantedInstance) {
t.Errorf("region.scanInstances() \nreceived instance data: \n %+v\nexpected: \n %+v",
spew.Sdump(inst.Instance), spew.Sdump(wantedInstance))
}
}
})
}
}
func Test_region_processDescribeInstancesPage(t *testing.T) {
type regionFields struct {
name string
instances instances
}
type args struct {
page *ec2.DescribeInstancesOutput
lastPage bool
}
tests := []struct {
name string
regionFields regionFields
args args
want bool
wantInstances instances
}{
{
name: "region with a single instance",
regionFields: regionFields{
name: "us-east-1",
instances: makeInstancesWithCatalog(instanceMap{}),
},
args: args{
page: &ec2.DescribeInstancesOutput{
Reservations: []*ec2.Reservation{
{
Instances: []*ec2.Instance{{
InstanceId: aws.String("id-1"),
InstanceType: aws.String("typeX"),
},
{
InstanceId: aws.String("id-2"),
InstanceType: aws.String("typeY"),
},
},
},
},
},
lastPage: true,
},
want: true,
wantInstances: makeInstancesWithCatalog(
instanceMap{
"id-1": {
Instance: &ec2.Instance{
InstanceId: aws.String("id-1"),
InstanceType: aws.String("typeX"),
},
},
"id-2": {
Instance: &ec2.Instance{
InstanceId: aws.String("id-2"),
InstanceType: aws.String("typeY"),
},
},
},
),
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
r := ®ion{
name: tt.regionFields.name,
instances: tt.regionFields.instances,
}
if got := r.processDescribeInstancesPage(tt.args.page, tt.args.lastPage); got != tt.want {
t.Errorf("region.processDescribeInstancesPage() = %v, want %v", got, tt.want)
}
})
}
}