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moby--moby/container/view_test.go

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package container // import "github.com/docker/docker/container"
import (
"io/ioutil"
"os"
"path/filepath"
"testing"
"github.com/docker/docker/api/types"
containertypes "github.com/docker/docker/api/types/container"
"github.com/google/uuid"
"gotest.tools/v3/assert"
is "gotest.tools/v3/assert/cmp"
)
var root string
func TestMain(m *testing.M) {
var err error
root, err = ioutil.TempDir("", "docker-container-test-")
if err != nil {
panic(err)
}
defer os.RemoveAll(root)
os.Exit(m.Run())
}
func newContainer(t *testing.T) *Container {
var (
id = uuid.New().String()
cRoot = filepath.Join(root, id)
)
if err := os.MkdirAll(cRoot, 0755); err != nil {
t.Fatal(err)
}
c := NewBaseContainer(id, cRoot)
c.HostConfig = &containertypes.HostConfig{}
return c
}
func TestViewSaveDelete(t *testing.T) {
db, err := NewViewDB()
if err != nil {
t.Fatal(err)
}
c := newContainer(t)
if err := c.CheckpointTo(db); err != nil {
t.Fatal(err)
}
if err := db.Delete(c); err != nil {
t.Fatal(err)
}
}
func TestViewAll(t *testing.T) {
var (
db, _ = NewViewDB()
one = newContainer(t)
two = newContainer(t)
)
one.Pid = 10
if err := one.CheckpointTo(db); err != nil {
t.Fatal(err)
}
two.Pid = 20
if err := two.CheckpointTo(db); err != nil {
t.Fatal(err)
}
all, err := db.Snapshot().All()
if err != nil {
t.Fatal(err)
}
if l := len(all); l != 2 {
t.Fatalf("expected 2 items, got %d", l)
}
byID := make(map[string]Snapshot)
for i := range all {
byID[all[i].ID] = all[i]
}
if s, ok := byID[one.ID]; !ok || s.Pid != 10 {
t.Fatalf("expected something different with for id=%s: %v", one.ID, s)
}
if s, ok := byID[two.ID]; !ok || s.Pid != 20 {
t.Fatalf("expected something different with for id=%s: %v", two.ID, s)
}
}
func TestViewGet(t *testing.T) {
var (
db, _ = NewViewDB()
one = newContainer(t)
)
one.ImageID = "some-image-123"
if err := one.CheckpointTo(db); err != nil {
t.Fatal(err)
}
s, err := db.Snapshot().Get(one.ID)
if err != nil {
t.Fatal(err)
}
if s == nil || s.ImageID != "some-image-123" {
t.Fatalf("expected ImageID=some-image-123. Got: %v", s)
}
}
func TestNames(t *testing.T) {
db, err := NewViewDB()
if err != nil {
t.Fatal(err)
}
assert.Check(t, db.ReserveName("name1", "containerid1"))
assert.Check(t, db.ReserveName("name1", "containerid1")) // idempotent
assert.Check(t, db.ReserveName("name2", "containerid2"))
assert.Check(t, is.Error(db.ReserveName("name2", "containerid3"), ErrNameReserved.Error()))
// Releasing a name allows the name to point to something else later.
assert.Check(t, db.ReleaseName("name2"))
assert.Check(t, db.ReserveName("name2", "containerid3"))
view := db.Snapshot()
id, err := view.GetID("name1")
assert.Check(t, err)
assert.Check(t, is.Equal("containerid1", id))
id, err = view.GetID("name2")
assert.Check(t, err)
assert.Check(t, is.Equal("containerid3", id))
_, err = view.GetID("notreserved")
assert.Check(t, is.Error(err, ErrNameNotReserved.Error()))
// Releasing and re-reserving a name doesn't affect the snapshot.
assert.Check(t, db.ReleaseName("name2"))
assert.Check(t, db.ReserveName("name2", "containerid4"))
id, err = view.GetID("name1")
assert.Check(t, err)
assert.Check(t, is.Equal("containerid1", id))
id, err = view.GetID("name2")
assert.Check(t, err)
assert.Check(t, is.Equal("containerid3", id))
// GetAllNames
assert.Check(t, is.DeepEqual(map[string][]string{"containerid1": {"name1"}, "containerid3": {"name2"}}, view.GetAllNames()))
assert.Check(t, db.ReserveName("name3", "containerid1"))
assert.Check(t, db.ReserveName("name4", "containerid1"))
view = db.Snapshot()
assert.Check(t, is.DeepEqual(map[string][]string{"containerid1": {"name1", "name3", "name4"}, "containerid4": {"name2"}}, view.GetAllNames()))
// Release containerid1's names with Delete even though no container exists
assert.Check(t, db.Delete(&Container{ID: "containerid1"}))
// Reusing one of those names should work
assert.Check(t, db.ReserveName("name1", "containerid4"))
view = db.Snapshot()
assert.Check(t, is.DeepEqual(map[string][]string{"containerid4": {"name1", "name2"}}, view.GetAllNames()))
}
// Test case for GitHub issue 35920
func TestViewWithHealthCheck(t *testing.T) {
var (
db, _ = NewViewDB()
one = newContainer(t)
)
one.Health = &Health{
Health: types.Health{
Status: "starting",
},
}
if err := one.CheckpointTo(db); err != nil {
t.Fatal(err)
}
s, err := db.Snapshot().Get(one.ID)
if err != nil {
t.Fatal(err)
}
if s == nil || s.Health != "starting" {
t.Fatalf("expected Health=starting. Got: %+v", s)
}
}