package graphdb import ( "database/sql" "fmt" "os" "path" "strconv" "testing" _ "code.google.com/p/gosqlite/sqlite3" ) func newTestDb(t *testing.T) (*Database, string) { p := path.Join(os.TempDir(), "sqlite.db") conn, err := sql.Open("sqlite3", p) db, err := NewDatabase(conn) if err != nil { t.Fatal(err) } return db, p } func destroyTestDb(dbPath string) { os.Remove(dbPath) } func TestNewDatabase(t *testing.T) { db, dbpath := newTestDb(t) if db == nil { t.Fatal("Database should not be nil") } db.Close() defer destroyTestDb(dbpath) } func TestCreateRootEntity(t *testing.T) { db, dbpath := newTestDb(t) defer destroyTestDb(dbpath) root := db.RootEntity() if root == nil { t.Fatal("Root entity should not be nil") } } func TestGetRootEntity(t *testing.T) { db, dbpath := newTestDb(t) defer destroyTestDb(dbpath) e := db.Get("/") if e == nil { t.Fatal("Entity should not be nil") } if e.ID() != "0" { t.Fatalf("Entity id should be 0, got %s", e.ID()) } } func TestSetEntityWithDifferentName(t *testing.T) { db, dbpath := newTestDb(t) defer destroyTestDb(dbpath) db.Set("/test", "1") if _, err := db.Set("/other", "1"); err != nil { t.Fatal(err) } } func TestSetDuplicateEntity(t *testing.T) { db, dbpath := newTestDb(t) defer destroyTestDb(dbpath) if _, err := db.Set("/foo", "42"); err != nil { t.Fatal(err) } if _, err := db.Set("/foo", "43"); err == nil { t.Fatalf("Creating an entry with a duplicate path did not cause an error") } } func TestCreateChild(t *testing.T) { db, dbpath := newTestDb(t) defer destroyTestDb(dbpath) child, err := db.Set("/db", "1") if err != nil { t.Fatal(err) } if child == nil { t.Fatal("Child should not be nil") } if child.ID() != "1" { t.Fail() } } func TestParents(t *testing.T) { db, dbpath := newTestDb(t) defer destroyTestDb(dbpath) for i := 1; i < 6; i++ { a := strconv.Itoa(i) if _, err := db.Set("/"+a, a); err != nil { t.Fatal(err) } } for i := 6; i < 11; i++ { a := strconv.Itoa(i) p := strconv.Itoa(i - 5) key := fmt.Sprintf("/%s/%s", p, a) if _, err := db.Set(key, a); err != nil { t.Fatal(err) } parents, err := db.Parents(key) if err != nil { t.Fatal(err) } if len(parents) != 1 { t.Fatalf("Expected 2 entries for %s got %d", key, len(parents)) } if parents[0] != p { t.Fatalf("ID %s received, %s expected", parents[0], p) } } } func TestChildren(t *testing.T) { db, dbpath := newTestDb(t) defer destroyTestDb(dbpath) str := "/" for i := 1; i < 6; i++ { a := strconv.Itoa(i) if _, err := db.Set(str+a, a); err != nil { t.Fatal(err) } str = str + a + "/" } str = "/" for i := 10; i < 30; i++ { // 20 entities a := strconv.Itoa(i) if _, err := db.Set(str+a, a); err != nil { t.Fatal(err) } str = str + a + "/" } entries, err := db.Children("/", 5) if err != nil { t.Fatal(err) } if len(entries) != 11 { t.Fatalf("Expect 11 entries for / got %d", len(entries)) } entries, err = db.Children("/", 20) if err != nil { t.Fatal(err) } if len(entries) != 25 { t.Fatalf("Expect 25 entries for / got %d", len(entries)) } } func TestListAllRootChildren(t *testing.T) { db, dbpath := newTestDb(t) defer destroyTestDb(dbpath) for i := 1; i < 6; i++ { a := strconv.Itoa(i) if _, err := db.Set("/"+a, a); err != nil { t.Fatal(err) } } entries := db.List("/", -1) if len(entries) != 5 { t.Fatalf("Expect 5 entries for / got %d", len(entries)) } } func TestListAllSubChildren(t *testing.T) { db, dbpath := newTestDb(t) defer destroyTestDb(dbpath) _, err := db.Set("/webapp", "1") if err != nil { t.Fatal(err) } child2, err := db.Set("/db", "2") if err != nil { t.Fatal(err) } child4, err := db.Set("/logs", "4") if err != nil { t.Fatal(err) } if _, err := db.Set("/db/logs", child4.ID()); err != nil { t.Fatal(err) } child3, err := db.Set("/sentry", "3") if err != nil { t.Fatal(err) } if _, err := db.Set("/webapp/sentry", child3.ID()); err != nil { t.Fatal(err) } if _, err := db.Set("/webapp/db", child2.ID()); err != nil { t.Fatal(err) } entries := db.List("/webapp", 1) if len(entries) != 3 { t.Fatalf("Expect 3 entries for / got %d", len(entries)) } entries = db.List("/webapp", 0) if len(entries) != 2 { t.Fatalf("Expect 2 entries for / got %d", len(entries)) } } func TestAddSelfAsChild(t *testing.T) { db, dbpath := newTestDb(t) defer destroyTestDb(dbpath) child, err := db.Set("/test", "1") if err != nil { t.Fatal(err) } if _, err := db.Set("/test/other", child.ID()); err == nil { t.Fatal("Error should not be nil") } } func TestAddChildToNonExistantRoot(t *testing.T) { db, dbpath := newTestDb(t) defer destroyTestDb(dbpath) if _, err := db.Set("/myapp", "1"); err != nil { t.Fatal(err) } if _, err := db.Set("/myapp/proxy/db", "2"); err == nil { t.Fatal("Error should not be nil") } } func TestWalkAll(t *testing.T) { db, dbpath := newTestDb(t) defer destroyTestDb(dbpath) _, err := db.Set("/webapp", "1") if err != nil { t.Fatal(err) } child2, err := db.Set("/db", "2") if err != nil { t.Fatal(err) } child4, err := db.Set("/db/logs", "4") if err != nil { t.Fatal(err) } if _, err := db.Set("/webapp/logs", child4.ID()); err != nil { t.Fatal(err) } child3, err := db.Set("/sentry", "3") if err != nil { t.Fatal(err) } if _, err := db.Set("/webapp/sentry", child3.ID()); err != nil { t.Fatal(err) } if _, err := db.Set("/webapp/db", child2.ID()); err != nil { t.Fatal(err) } child5, err := db.Set("/gograph", "5") if err != nil { t.Fatal(err) } if _, err := db.Set("/webapp/same-ref-diff-name", child5.ID()); err != nil { t.Fatal(err) } if err := db.Walk("/", func(p string, e *Entity) error { t.Logf("Path: %s Entity: %s", p, e.ID()) return nil }, -1); err != nil { t.Fatal(err) } } func TestGetEntityByPath(t *testing.T) { db, dbpath := newTestDb(t) defer destroyTestDb(dbpath) _, err := db.Set("/webapp", "1") if err != nil { t.Fatal(err) } child2, err := db.Set("/db", "2") if err != nil { t.Fatal(err) } child4, err := db.Set("/logs", "4") if err != nil { t.Fatal(err) } if _, err := db.Set("/db/logs", child4.ID()); err != nil { t.Fatal(err) } child3, err := db.Set("/sentry", "3") if err != nil { t.Fatal(err) } if _, err := db.Set("/webapp/sentry", child3.ID()); err != nil { t.Fatal(err) } if _, err := db.Set("/webapp/db", child2.ID()); err != nil { t.Fatal(err) } child5, err := db.Set("/gograph", "5") if err != nil { t.Fatal(err) } if _, err := db.Set("/webapp/same-ref-diff-name", child5.ID()); err != nil { t.Fatal(err) } entity := db.Get("/webapp/db/logs") if entity == nil { t.Fatal("Entity should not be nil") } if entity.ID() != "4" { t.Fatalf("Expected to get entity with id 4, got %s", entity.ID()) } } func TestEnitiesPaths(t *testing.T) { db, dbpath := newTestDb(t) defer destroyTestDb(dbpath) _, err := db.Set("/webapp", "1") if err != nil { t.Fatal(err) } child2, err := db.Set("/db", "2") if err != nil { t.Fatal(err) } child4, err := db.Set("/logs", "4") if err != nil { t.Fatal(err) } if _, err := db.Set("/db/logs", child4.ID()); err != nil { t.Fatal(err) } child3, err := db.Set("/sentry", "3") if err != nil { t.Fatal(err) } if _, err := db.Set("/webapp/sentry", child3.ID()); err != nil { t.Fatal(err) } if _, err := db.Set("/webapp/db", child2.ID()); err != nil { t.Fatal(err) } child5, err := db.Set("/gograph", "5") if err != nil { t.Fatal(err) } if _, err := db.Set("/webapp/same-ref-diff-name", child5.ID()); err != nil { t.Fatal(err) } out := db.List("/", -1) for _, p := range out.Paths() { t.Log(p) } } func TestDeleteRootEntity(t *testing.T) { db, dbpath := newTestDb(t) defer destroyTestDb(dbpath) if err := db.Delete("/"); err == nil { t.Fatal("Error should not be nil") } } func TestDeleteEntity(t *testing.T) { db, dbpath := newTestDb(t) defer destroyTestDb(dbpath) _, err := db.Set("/webapp", "1") if err != nil { t.Fatal(err) } child2, err := db.Set("/db", "2") if err != nil { t.Fatal(err) } child4, err := db.Set("/logs", "4") if err != nil { t.Fatal(err) } if _, err := db.Set("/db/logs", child4.ID()); err != nil { t.Fatal(err) } child3, err := db.Set("/sentry", "3") if err != nil { t.Fatal(err) } if _, err := db.Set("/webapp/sentry", child3.ID()); err != nil { t.Fatal(err) } if _, err := db.Set("/webapp/db", child2.ID()); err != nil { t.Fatal(err) } child5, err := db.Set("/gograph", "5") if err != nil { t.Fatal(err) } if _, err := db.Set("/webapp/same-ref-diff-name", child5.ID()); err != nil { t.Fatal(err) } if err := db.Delete("/webapp/sentry"); err != nil { t.Fatal(err) } entity := db.Get("/webapp/sentry") if entity != nil { t.Fatal("Entity /webapp/sentry should be nil") } } func TestCountRefs(t *testing.T) { db, dbpath := newTestDb(t) defer destroyTestDb(dbpath) db.Set("/webapp", "1") if db.Refs("1") != 1 { t.Fatal("Expect reference count to be 1") } db.Set("/db", "2") db.Set("/webapp/db", "2") if db.Refs("2") != 2 { t.Fatal("Expect reference count to be 2") } } func TestPurgeId(t *testing.T) { db, dbpath := newTestDb(t) defer destroyTestDb(dbpath) db.Set("/webapp", "1") if c := db.Refs("1"); c != 1 { t.Fatalf("Expect reference count to be 1, got %d", c) } db.Set("/db", "2") db.Set("/webapp/db", "2") count, err := db.Purge("2") if err != nil { t.Fatal(err) } if count != 2 { t.Fatalf("Expected 2 references to be removed, got %d", count) } } // Regression test https://github.com/docker/docker/issues/12334 func TestPurgeIdRefPaths(t *testing.T) { db, dbpath := newTestDb(t) defer destroyTestDb(dbpath) db.Set("/webapp", "1") db.Set("/db", "2") db.Set("/db/webapp", "1") if c := db.Refs("1"); c != 2 { t.Fatalf("Expected 2 reference for webapp, got %d", c) } if c := db.Refs("2"); c != 1 { t.Fatalf("Expected 1 reference for db, got %d", c) } if rp := db.RefPaths("2"); len(rp) != 1 { t.Fatalf("Expected 1 reference path for db, got %d", len(rp)) } count, err := db.Purge("2") if err != nil { t.Fatal(err) } if count != 2 { t.Fatalf("Expected 2 rows to be removed, got %d", count) } if c := db.Refs("2"); c != 0 { t.Fatalf("Expected 0 reference for db, got %d", c) } if c := db.Refs("1"); c != 1 { t.Fatalf("Expected 1 reference for webapp, got %d", c) } } func TestRename(t *testing.T) { db, dbpath := newTestDb(t) defer destroyTestDb(dbpath) db.Set("/webapp", "1") if db.Refs("1") != 1 { t.Fatal("Expect reference count to be 1") } db.Set("/db", "2") db.Set("/webapp/db", "2") if db.Get("/webapp/db") == nil { t.Fatal("Cannot find entity at path /webapp/db") } if err := db.Rename("/webapp/db", "/webapp/newdb"); err != nil { t.Fatal(err) } if db.Get("/webapp/db") != nil { t.Fatal("Entity should not exist at /webapp/db") } if db.Get("/webapp/newdb") == nil { t.Fatal("Cannot find entity at path /webapp/newdb") } } func TestCreateMultipleNames(t *testing.T) { db, dbpath := newTestDb(t) defer destroyTestDb(dbpath) db.Set("/db", "1") if _, err := db.Set("/myapp", "1"); err != nil { t.Fatal(err) } db.Walk("/", func(p string, e *Entity) error { t.Logf("%s\n", p) return nil }, -1) } func TestRefPaths(t *testing.T) { db, dbpath := newTestDb(t) defer destroyTestDb(dbpath) db.Set("/webapp", "1") db.Set("/db", "2") db.Set("/webapp/db", "2") refs := db.RefPaths("2") if len(refs) != 2 { t.Fatalf("Expected reference count to be 2, got %d", len(refs)) } } func TestExistsTrue(t *testing.T) { db, dbpath := newTestDb(t) defer destroyTestDb(dbpath) db.Set("/testing", "1") if !db.Exists("/testing") { t.Fatalf("/tesing should exist") } } func TestExistsFalse(t *testing.T) { db, dbpath := newTestDb(t) defer destroyTestDb(dbpath) db.Set("/toerhe", "1") if db.Exists("/testing") { t.Fatalf("/tesing should not exist") } } func TestGetNameWithTrailingSlash(t *testing.T) { db, dbpath := newTestDb(t) defer destroyTestDb(dbpath) db.Set("/todo", "1") e := db.Get("/todo/") if e == nil { t.Fatalf("Entity should not be nil") } } func TestConcurrentWrites(t *testing.T) { db, dbpath := newTestDb(t) defer destroyTestDb(dbpath) errs := make(chan error, 2) save := func(name string, id string) { if _, err := db.Set(fmt.Sprintf("/%s", name), id); err != nil { errs <- err } errs <- nil } purge := func(id string) { if _, err := db.Purge(id); err != nil { errs <- err } errs <- nil } save("/1", "1") go purge("1") go save("/2", "2") any := false for i := 0; i < 2; i++ { if err := <-errs; err != nil { any = true t.Log(err) } } if any { t.Fail() } }