package testfixtures import ( "database/sql" "fmt" "io/ioutil" "path" "path/filepath" "regexp" "strings" "gopkg.in/yaml.v2" ) // Context holds the fixtures to be loaded in the database. type Context struct { db *sql.DB helper Helper fixturesFiles []*fixtureFile } type fixtureFile struct { path string fileName string content []byte insertSQLs []insertSQL } type insertSQL struct { sql string params []interface{} } var ( dbnameRegexp = regexp.MustCompile("(?i)test") ) // NewFolder creates a context for all fixtures in a given folder into the database: // NewFolder(db, &PostgreSQL{}, "my/fixtures/folder") func NewFolder(db *sql.DB, helper Helper, folderName string) (*Context, error) { fixtures, err := fixturesFromFolder(folderName) if err != nil { return nil, err } c, err := newContext(db, helper, fixtures) if err != nil { return nil, err } return c, nil } // NewFiles creates a context for all specified fixtures files into database: // NewFiles(db, &PostgreSQL{}, // "fixtures/customers.yml", // "fixtures/orders.yml" // // add as many files you want // ) func NewFiles(db *sql.DB, helper Helper, fileNames ...string) (*Context, error) { fixtures, err := fixturesFromFiles(fileNames...) if err != nil { return nil, err } c, err := newContext(db, helper, fixtures) if err != nil { return nil, err } return c, nil } func newContext(db *sql.DB, helper Helper, fixtures []*fixtureFile) (*Context, error) { c := &Context{ db: db, helper: helper, fixturesFiles: fixtures, } if err := c.helper.init(c.db); err != nil { return nil, err } if err := c.buildInsertSQLs(); err != nil { return nil, err } return c, nil } // DetectTestDatabase returns nil if databaseName matches regexp // if err := fixtures.DetectTestDatabase(); err != nil { // log.Fatal(err) // } func (c *Context) DetectTestDatabase() error { dbName, err := c.helper.databaseName(c.db) if err != nil { return err } if !dbnameRegexp.MatchString(dbName) { return ErrNotTestDatabase } return nil } // Load wipes and after load all fixtures in the database. // if err := fixtures.Load(); err != nil { // log.Fatal(err) // } func (c *Context) Load() error { if !skipDatabaseNameCheck { if err := c.DetectTestDatabase(); err != nil { return err } } err := c.helper.disableReferentialIntegrity(c.db, func(tx *sql.Tx) error { for _, file := range c.fixturesFiles { modified, err := c.helper.isTableModified(tx, file.fileNameWithoutExtension()) if err != nil { return err } if !modified { continue } if err := file.delete(tx, c.helper); err != nil { return err } err = c.helper.whileInsertOnTable(tx, file.fileNameWithoutExtension(), func() error { for j, i := range file.insertSQLs { if _, err := tx.Exec(i.sql, i.params...); err != nil { return &InsertError{ Err: err, File: file.fileName, Index: j, SQL: i.sql, Params: i.params, } } } return nil }) if err != nil { return err } } return nil }) if err != nil { return err } return c.helper.afterLoad(c.db) } func (c *Context) buildInsertSQLs() error { for _, f := range c.fixturesFiles { var records interface{} if err := yaml.Unmarshal(f.content, &records); err != nil { return err } switch records := records.(type) { case []interface{}: for _, record := range records { recordMap, ok := record.(map[interface{}]interface{}) if !ok { return ErrWrongCastNotAMap } sql, values, err := f.buildInsertSQL(c.helper, recordMap) if err != nil { return err } f.insertSQLs = append(f.insertSQLs, insertSQL{sql, values}) } case map[interface{}]interface{}: for _, record := range records { recordMap, ok := record.(map[interface{}]interface{}) if !ok { return ErrWrongCastNotAMap } sql, values, err := f.buildInsertSQL(c.helper, recordMap) if err != nil { return err } f.insertSQLs = append(f.insertSQLs, insertSQL{sql, values}) } default: return ErrFileIsNotSliceOrMap } } return nil } func (f *fixtureFile) fileNameWithoutExtension() string { return strings.Replace(f.fileName, filepath.Ext(f.fileName), "", 1) } func (f *fixtureFile) delete(tx *sql.Tx, h Helper) error { _, err := tx.Exec(fmt.Sprintf("DELETE FROM %s", h.quoteKeyword(f.fileNameWithoutExtension()))) return err } func (f *fixtureFile) buildInsertSQL(h Helper, record map[interface{}]interface{}) (sqlStr string, values []interface{}, err error) { var ( sqlColumns []string sqlValues []string i = 1 ) for key, value := range record { keyStr, ok := key.(string) if !ok { err = ErrKeyIsNotString return } sqlColumns = append(sqlColumns, h.quoteKeyword(keyStr)) // if string, try convert to SQL or time // if map or array, convert to json switch v := value.(type) { case string: if strings.HasPrefix(v, "RAW=") { sqlValues = append(sqlValues, strings.TrimPrefix(v, "RAW=")) continue } if t, err := tryStrToDate(v); err == nil { value = t } case []interface{}, map[interface{}]interface{}: value = recursiveToJSON(v) } switch h.paramType() { case paramTypeDollar: sqlValues = append(sqlValues, fmt.Sprintf("$%d", i)) case paramTypeQuestion: sqlValues = append(sqlValues, "?") case paramTypeColon: sqlValues = append(sqlValues, fmt.Sprintf(":%d", i)) } values = append(values, value) i++ } sqlStr = fmt.Sprintf( "INSERT INTO %s (%s) VALUES (%s)", h.quoteKeyword(f.fileNameWithoutExtension()), strings.Join(sqlColumns, ", "), strings.Join(sqlValues, ", "), ) return } func fixturesFromFolder(folderName string) ([]*fixtureFile, error) { var files []*fixtureFile fileinfos, err := ioutil.ReadDir(folderName) if err != nil { return nil, err } for _, fileinfo := range fileinfos { fileExt := filepath.Ext(fileinfo.Name()) if !fileinfo.IsDir() && (fileExt == ".yml" || fileExt == ".yaml") { fixture := &fixtureFile{ path: path.Join(folderName, fileinfo.Name()), fileName: fileinfo.Name(), } fixture.content, err = ioutil.ReadFile(fixture.path) if err != nil { return nil, err } files = append(files, fixture) } } return files, nil } func fixturesFromFiles(fileNames ...string) ([]*fixtureFile, error) { var ( fixtureFiles []*fixtureFile err error ) for _, f := range fileNames { fixture := &fixtureFile{ path: f, fileName: filepath.Base(f), } fixture.content, err = ioutil.ReadFile(fixture.path) if err != nil { return nil, err } fixtureFiles = append(fixtureFiles, fixture) } return fixtureFiles, nil }