package migrate import ( "database/sql" "os" "strings" "testing" "github.com/russross/meddler" ) type Sample struct { ID int64 `meddler:"id,pk"` Imel string `meddler:"imel"` Name string `meddler:"name"` } type RenameSample struct { ID int64 `meddler:"id,pk"` Email string `meddler:"email"` Name string `meddler:"name"` } type AddColumnSample struct { ID int64 `meddler:"id,pk"` Imel string `meddler:"imel"` Name string `meddler:"name"` Url string `meddler:"url"` Num int64 `meddler:"num"` } // ---------- revision 1 type revision1 struct{} func (r *revision1) Up(mg *MigrationDriver) error { _, err := mg.CreateTable("samples", []string{ "id INTEGER PRIMARY KEY AUTOINCREMENT", "imel VARCHAR(255) UNIQUE", "name VARCHAR(255)", }) return err } func (r *revision1) Down(mg *MigrationDriver) error { _, err := mg.DropTable("samples") return err } func (r *revision1) Revision() int64 { return 1 } // ---------- end of revision 1 // ---------- revision 2 type revision2 struct{} func (r *revision2) Up(mg *MigrationDriver) error { _, err := mg.RenameTable("samples", "examples") return err } func (r *revision2) Down(mg *MigrationDriver) error { _, err := mg.RenameTable("examples", "samples") return err } func (r *revision2) Revision() int64 { return 2 } // ---------- end of revision 2 // ---------- revision 3 type revision3 struct{} func (r *revision3) Up(mg *MigrationDriver) error { if _, err := mg.AddColumn("samples", "url VARCHAR(255)"); err != nil { return err } _, err := mg.AddColumn("samples", "num INTEGER") return err } func (r *revision3) Down(mg *MigrationDriver) error { _, err := mg.DropColumns("samples", []string{"num", "url"}) return err } func (r *revision3) Revision() int64 { return 3 } // ---------- end of revision 3 // ---------- revision 4 type revision4 struct{} func (r *revision4) Up(mg *MigrationDriver) error { _, err := mg.RenameColumns("samples", map[string]string{ "imel": "email", }) return err } func (r *revision4) Down(mg *MigrationDriver) error { _, err := mg.RenameColumns("samples", map[string]string{ "email": "imel", }) return err } func (r *revision4) Revision() int64 { return 4 } // ---------- end of revision 4 // ---------- revision 5 type revision5 struct{} func (r *revision5) Up(mg *MigrationDriver) error { _, err := mg.AddIndex("samples", []string{"url", "name"}, "") return err } func (r *revision5) Down(mg *MigrationDriver) error { _, err := mg.DropIndex("samples", []string{"url", "name"}) return err } func (r *revision5) Revision() int64 { return 5 } // ---------- end of revision 5 // ---------- revision 6 type revision6 struct{} func (r *revision6) Up(mg *MigrationDriver) error { _, err := mg.RenameColumns("samples", map[string]string{ "url": "host", }) return err } func (r *revision6) Down(mg *MigrationDriver) error { _, err := mg.RenameColumns("samples", map[string]string{ "host": "url", }) return err } func (r *revision6) Revision() int64 { return 6 } // ---------- end of revision 6 // ---------- revision 7 type revision7 struct{} func (r *revision7) Up(mg *MigrationDriver) error { _, err := mg.DropColumns("samples", []string{"host", "num"}) return err } func (r *revision7) Down(mg *MigrationDriver) error { if _, err := mg.AddColumn("samples", "host VARCHAR(255)"); err != nil { return err } _, err := mg.AddColumn("samples", "num INSTEGER") return err } func (r *revision7) Revision() int64 { return 7 } // ---------- end of revision 7 // ---------- revision 8 type revision8 struct{} func (r *revision8) Up(mg *MigrationDriver) error { if _, err := mg.AddColumn("samples", "repo_id INTEGER"); err != nil { return err } _, err := mg.AddColumn("samples", "repo VARCHAR(255)") return err } func (r *revision8) Down(mg *MigrationDriver) error { _, err := mg.DropColumns("samples", []string{"repo", "repo_id"}) return err } func (r *revision8) Revision() int64 { return 8 } // ---------- end of revision 8 // ---------- revision 9 type revision9 struct{} func (r *revision9) Up(mg *MigrationDriver) error { _, err := mg.RenameColumns("samples", map[string]string{ "repo": "repository", }) return err } func (r *revision9) Down(mg *MigrationDriver) error { _, err := mg.RenameColumns("samples", map[string]string{ "repository": "repo", }) return err } func (r *revision9) Revision() int64 { return 9 } // ---------- end of revision 9 var db *sql.DB var testSchema = ` CREATE TABLE samples ( id INTEGER PRIMARY KEY AUTOINCREMENT, imel VARCHAR(255) UNIQUE, name VARCHAR(255) ); ` var dataDump = []string{ `INSERT INTO samples (imel, name) VALUES ('test@example.com', 'Test Tester');`, `INSERT INTO samples (imel, name) VALUES ('foo@bar.com', 'Foo Bar');`, `INSERT INTO samples (imel, name) VALUES ('crash@bandicoot.io', 'Crash Bandicoot');`, } func TestMigrateCreateTable(t *testing.T) { defer tearDown() if err := setUp(); err != nil { t.Fatalf("Error preparing database: %q", err) } Driver = SQLite mgr := New(db) if err := mgr.Add(&revision1{}).Migrate(); err != nil { t.Errorf("Can not migrate: %q", err) } sample := Sample{ ID: 1, Imel: "test@example.com", Name: "Test Tester", } if err := meddler.Save(db, "samples", &sample); err != nil { t.Errorf("Can not save data: %q", err) } } func TestMigrateRenameTable(t *testing.T) { defer tearDown() if err := setUp(); err != nil { t.Fatalf("Error preparing database: %q", err) } Driver = SQLite mgr := New(db) if err := mgr.Add(&revision1{}).Migrate(); err != nil { t.Errorf("Can not migrate: %q", err) } loadFixture(t) if err := mgr.Add(&revision2{}).Migrate(); err != nil { t.Errorf("Can not migrate: %q", err) } sample := Sample{} if err := meddler.QueryRow(db, &sample, `SELECT * FROM examples WHERE id = ?`, 2); err != nil { t.Errorf("Can not fetch data: %q", err) } if sample.Imel != "foo@bar.com" { t.Errorf("Column doesn't match. Expect: %s, got: %s", "foo@bar.com", sample.Imel) } } type TableInfo struct { CID int64 `meddler:"cid,pk"` Name string `meddler:"name"` Type string `meddler:"type"` Notnull bool `meddler:"notnull"` DfltValue interface{} `meddler:"dflt_value"` PK bool `meddler:"pk"` } func TestMigrateAddRemoveColumns(t *testing.T) { defer tearDown() if err := setUp(); err != nil { t.Fatalf("Error preparing database: %q", err) } Driver = SQLite mgr := New(db) if err := mgr.Add(&revision1{}, &revision3{}).Migrate(); err != nil { t.Errorf("Can not migrate: %q", err) } var columns []*TableInfo if err := meddler.QueryAll(db, &columns, `PRAGMA table_info(samples);`); err != nil { t.Errorf("Can not access table info: %q", err) } if len(columns) < 5 { t.Errorf("Expect length columns: %d\nGot: %d", 5, len(columns)) } var row = AddColumnSample{ ID: 33, Name: "Foo", Imel: "foo@bar.com", Url: "http://example.com", Num: 42, } if err := meddler.Save(db, "samples", &row); err != nil { t.Errorf("Can not save into database: %q", err) } if err := mgr.MigrateTo(1); err != nil { t.Errorf("Can not migrate: %q", err) } var another_columns []*TableInfo if err := meddler.QueryAll(db, &another_columns, `PRAGMA table_info(samples);`); err != nil { t.Errorf("Can not access table info: %q", err) } if len(another_columns) != 3 { t.Errorf("Expect length columns = %d, got: %d", 3, len(columns)) } } func TestRenameColumn(t *testing.T) { defer tearDown() if err := setUp(); err != nil { t.Fatalf("Error preparing database: %q", err) } Driver = SQLite mgr := New(db) if err := mgr.Add(&revision1{}, &revision4{}).MigrateTo(1); err != nil { t.Errorf("Can not migrate: %q", err) } loadFixture(t) if err := mgr.MigrateTo(4); err != nil { t.Errorf("Can not migrate: %q", err) } row := RenameSample{} if err := meddler.QueryRow(db, &row, `SELECT * FROM samples WHERE id = 3;`); err != nil { t.Errorf("Can not query database: %q", err) } if row.Email != "crash@bandicoot.io" { t.Errorf("Expect %s, got %s", "crash@bandicoot.io", row.Email) } } func TestMigrateExistingTable(t *testing.T) { defer tearDown() if err := setUp(); err != nil { t.Fatalf("Error preparing database: %q", err) } Driver = SQLite if _, err := db.Exec(testSchema); err != nil { t.Errorf("Can not create database: %q", err) } loadFixture(t) mgr := New(db) if err := mgr.Add(&revision4{}).Migrate(); err != nil { t.Errorf("Can not migrate: %q", err) } var rows []*RenameSample if err := meddler.QueryAll(db, &rows, `SELECT * from samples;`); err != nil { t.Errorf("Can not query database: %q", err) } if len(rows) != 3 { t.Errorf("Expect rows length = %d, got %d", 3, len(rows)) } if rows[1].Email != "foo@bar.com" { t.Errorf("Expect email = %s, got %s", "foo@bar.com", rows[1].Email) } } type sqliteMaster struct { Sql interface{} `meddler:"sql"` } func TestIndexOperations(t *testing.T) { defer tearDown() if err := setUp(); err != nil { t.Fatalf("Error preparing database: %q", err) } Driver = SQLite mgr := New(db) // Migrate, create index if err := mgr.Add(&revision1{}, &revision3{}, &revision5{}).Migrate(); err != nil { t.Errorf("Can not migrate: %q", err) } var esquel []*sqliteMaster // Query sqlite_master, check if index is exists. query := `SELECT sql FROM sqlite_master WHERE type='index' and tbl_name='samples'` if err := meddler.QueryAll(db, &esquel, query); err != nil { t.Errorf("Can not find index: %q", err) } indexStatement := `CREATE INDEX idx_samples_on_url_and_name ON samples (url, name)` if string(esquel[1].Sql.([]byte)) != indexStatement { t.Errorf("Can not find index, got: %q", esquel[1]) } // Migrate, rename indexed columns if err := mgr.Add(&revision6{}).Migrate(); err != nil { t.Errorf("Can not migrate: %q", err) } var esquel1 []*sqliteMaster if err := meddler.QueryAll(db, &esquel1, query); err != nil { t.Errorf("Can not find index: %q", err) } indexStatement = `CREATE INDEX idx_samples_on_host_and_name ON samples (host, name)` if string(esquel1[1].Sql.([]byte)) != indexStatement { t.Errorf("Can not find index, got: %q", esquel1[1]) } if err := mgr.Add(&revision7{}).Migrate(); err != nil { t.Errorf("Can not migrate: %q", err) } var esquel2 []*sqliteMaster if err := meddler.QueryAll(db, &esquel2, query); err != nil { t.Errorf("Can not find index: %q", err) } if len(esquel2) != 1 { t.Errorf("Expect row length equal to %d, got %d", 1, len(esquel2)) } } func TestColumnRedundancy(t *testing.T) { defer tearDown() if err := setUp(); err != nil { t.Fatalf("Error preparing database: %q", err) } Driver = SQLite migr := New(db) if err := migr.Add(&revision1{}, &revision8{}, &revision9{}).Migrate(); err != nil { t.Errorf("Can not migrate: %q", err) } var tableSql string query := `SELECT sql FROM sqlite_master where type='table' and name='samples'` if err := db.QueryRow(query).Scan(&tableSql); err != nil { t.Errorf("Can not query sqlite_master: %q", err) } if !strings.Contains(tableSql, "repository ") { t.Errorf("Expect column with name repository") } } func setUp() error { var err error db, err = sql.Open("sqlite3", "migration_tests.sqlite") return err } func tearDown() { db.Close() os.Remove("migration_tests.sqlite") } func loadFixture(t *testing.T) { for _, sql := range dataDump { if _, err := db.Exec(sql); err != nil { t.Errorf("Can not insert into database: %q", err) } } }