Create general cloudtypes instances

This commit is contained in:
katexochen 2022-06-07 11:29:20 +02:00 committed by Paul Meyer
parent 4912ab0195
commit f9b471e3c0
2 changed files with 129 additions and 0 deletions

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package cloudtypes
import "errors"
// Instance is a gcp instance.
type Instance struct {
PublicIP string
PrivateIP string
}
// Instances is a map of gcp Instances. The ID of an instance is used as key.
type Instances map[string]Instance
// IDs returns the IDs of all instances of the Constellation.
func (i Instances) IDs() []string {
var ids []string
for id := range i {
ids = append(ids, id)
}
return ids
}
// PublicIPs returns the public IPs of all the instances of the Constellation.
func (i Instances) PublicIPs() []string {
var ips []string
for _, instance := range i {
ips = append(ips, instance.PublicIP)
}
return ips
}
// PrivateIPs returns the private IPs of all the instances of the Constellation.
func (i Instances) PrivateIPs() []string {
var ips []string
for _, instance := range i {
ips = append(ips, instance.PrivateIP)
}
return ips
}
// GetOne return anyone instance out of the instances and its ID.
func (i Instances) GetOne() (string, Instance, error) {
for id, instance := range i {
return id, instance, nil
}
return "", Instance{}, errors.New("map is empty")
}
// GetOthers returns all instances but the one with the handed ID.
func (i Instances) GetOthers(id string) Instances {
others := make(Instances)
for key, instance := range i {
if key != id {
others[key] = instance
}
}
return others
}

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package cloudtypes
import (
"testing"
"github.com/stretchr/testify/assert"
)
func TestIDs(t *testing.T) {
assert := assert.New(t)
testState := testInstances()
wantIDs := []string{"id-9", "id-10", "id-11", "id-12"}
assert.ElementsMatch(wantIDs, testState.IDs())
}
func TestPublicIPs(t *testing.T) {
assert := assert.New(t)
testState := testInstances()
wantIPs := []string{"192.0.2.1", "192.0.2.3", "192.0.2.5", "192.0.2.7"}
assert.ElementsMatch(wantIPs, testState.PublicIPs())
}
func TestPrivateIPs(t *testing.T) {
assert := assert.New(t)
testState := testInstances()
wantIPs := []string{"192.0.2.2", "192.0.2.4", "192.0.2.6", "192.0.2.8"}
assert.ElementsMatch(wantIPs, testState.PrivateIPs())
}
func TestGetOne(t *testing.T) {
assert := assert.New(t)
testState := testInstances()
id, instance, err := testState.GetOne()
assert.NoError(err)
assert.Contains(testState, id)
assert.Equal(testState[id], instance)
}
func TestGetOthers(t *testing.T) {
assert := assert.New(t)
testCases := testInstances().IDs()
for _, id := range testCases {
others := testInstances().GetOthers(id)
assert.NotContains(others, id)
wantInstances := testInstances()
delete(wantInstances, id)
assert.ElementsMatch(others.IDs(), wantInstances.IDs())
}
}
func testInstances() Instances {
return Instances{
"id-9": {
PublicIP: "192.0.2.1",
PrivateIP: "192.0.2.2",
},
"id-10": {
PublicIP: "192.0.2.3",
PrivateIP: "192.0.2.4",
},
"id-11": {
PublicIP: "192.0.2.5",
PrivateIP: "192.0.2.6",
},
"id-12": {
PublicIP: "192.0.2.7",
PrivateIP: "192.0.2.8",
},
}
}