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) } }