249 lines
6.6 KiB
Smarty
249 lines
6.6 KiB
Smarty
type PostgresCfg struct {
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User string `toml:"user"`
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Pass string `toml:"pass"`
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Host string `toml:"host"`
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Port int `toml:"port"`
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DBName string `toml:"dbname"`
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}
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type Config struct {
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Postgres PostgresCfg `toml:"postgres"`
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}
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var cfg *Config
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var testCfg *Config
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var dbConn *sql.DB
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func TestMain(m *testing.M) {
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rand.Seed(time.Now().UnixNano())
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err := setup()
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if err != nil {
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fmt.Println(err)
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os.Exit(-1)
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}
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code := m.Run()
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err = teardown()
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if err != nil {
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fmt.Println(err)
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os.Exit(-1)
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}
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os.Exit(code)
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}
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// teardown switches its connection to the template1 database temporarily
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// so that it can drop the test database and the test user.
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func teardown() error {
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err := dbConn.Close()
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if err != nil {
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return err
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}
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dbConn, err = DBConnect(cfg.Postgres.User, cfg.Postgres.Pass, "template1", cfg.Postgres.Host, cfg.Postgres.Port)
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if err != nil {
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return err
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}
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_, err = dbConn.Exec(fmt.Sprintf(`DROP DATABASE %s;`, testCfg.Postgres.DBName))
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if err != nil {
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return err
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}
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_, err = dbConn.Exec(fmt.Sprintf(`DROP USER %s;`, testCfg.Postgres.User))
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if err != nil {
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return err
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}
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return dbConn.Close()
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}
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// DBConnect connects to a database and returns the handle.
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func DBConnect(user, pass, dbname, host string, port int) (*sql.DB, error) {
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connStr := fmt.Sprintf("user=%s password=%s dbname=%s host=%s port=%d",
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user, pass, dbname, host, port)
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return sql.Open("postgres", connStr)
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}
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func randSeq(n int) string {
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var letters = []rune("abcdefghijklmnopqrstuvwxyz")
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randStr := make([]rune, n)
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for i := range randStr {
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randStr[i] = letters[rand.Intn(len(letters))]
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}
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return string(randStr)
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}
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func LoadConfigFile(filename string) error {
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_, err := toml.DecodeFile(filename, &cfg)
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if os.IsNotExist(err) {
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return fmt.Errorf("Failed to find the toml configuration file %s: %s", filename, err)
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}
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if err != nil {
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return fmt.Errorf("Failed to decode toml configuration file: %s", err)
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}
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return nil
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}
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// setup dumps the database schema and imports it into a temporary randomly
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// generated test database so that tests can be run against it using the
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// generated sqlboiler ORM package.
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func setup() error {
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// Load the config file in the parent directory.
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err := LoadConfigFile("../config.toml")
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if err != nil {
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return fmt.Errorf("Unable to load config file: %s", err)
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}
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// Create a randomized test configuration object.
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testCfg = &Config{}
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testCfg.Postgres.Host = cfg.Postgres.Host
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testCfg.Postgres.Port = cfg.Postgres.Port
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testCfg.Postgres.User = randSeq(20)
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testCfg.Postgres.Pass = randSeq(20)
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testCfg.Postgres.DBName = cfg.Postgres.DBName + "_" + randSeq(10)
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fhSchema, err := ioutil.TempFile(os.TempDir(), "sqlboilerschema")
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if err != nil {
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return fmt.Errorf("Unable to create sqlboiler schema tmp file: %s", err)
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}
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defer os.Remove(fhSchema.Name())
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passDir, err := ioutil.TempDir(os.TempDir(), "sqlboiler")
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if err != nil {
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return fmt.Errorf("Unable to create sqlboiler tmp dir for postgres pw file: %s", err)
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}
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defer os.RemoveAll(passDir)
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// Write the postgres user password to a tmp file for pg_dump
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pwBytes := []byte(fmt.Sprintf("%s:%d:%s:%s:%s",
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cfg.Postgres.Host,
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cfg.Postgres.Port,
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cfg.Postgres.DBName,
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cfg.Postgres.User,
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cfg.Postgres.Pass,
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))
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passFilePath := passDir + "/pwfile"
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err = ioutil.WriteFile(passFilePath, pwBytes, 0600)
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if err != nil {
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return fmt.Errorf("Unable to create pwfile in passDir: %s", err)
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}
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// The params for the pg_dump command to dump the database schema
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params := []string{
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fmt.Sprintf(`--host=%s`, cfg.Postgres.Host),
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fmt.Sprintf(`--port=%d`, cfg.Postgres.Port),
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fmt.Sprintf(`--username=%s`, cfg.Postgres.User),
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"--schema-only",
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cfg.Postgres.DBName,
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}
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// Dump the database schema into the sqlboilerschema tmp file
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errBuf := bytes.Buffer{}
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cmd := exec.Command("pg_dump", params...)
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cmd.Stderr = &errBuf
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cmd.Stdout = fhSchema
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cmd.Env = append(os.Environ(), fmt.Sprintf(`PGPASSFILE=%s`, passFilePath))
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if err := cmd.Run(); err != nil {
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fmt.Printf("pg_dump exec failed: %s\n\n%s\n", err, errBuf.String())
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}
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dbConn, err = DBConnect(cfg.Postgres.User, cfg.Postgres.Pass, cfg.Postgres.DBName, cfg.Postgres.Host, cfg.Postgres.Port)
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if err != nil {
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return err
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}
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// Create the randomly generated database test user
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if err = createTestUser(dbConn); err != nil {
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return err
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}
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// Create the randomly generated database
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_, err = dbConn.Exec(fmt.Sprintf(`CREATE DATABASE %s WITH ENCODING 'UTF8'`, testCfg.Postgres.DBName))
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if err != nil {
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return err
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}
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// Assign the randomly generated db test user to the generated test db
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_, err = dbConn.Exec(fmt.Sprintf(`ALTER DATABASE %s OWNER TO %s;`, testCfg.Postgres.DBName, testCfg.Postgres.User))
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if err != nil {
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return err
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}
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// Close the old connection so we can reconnect with the restricted access generated user
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if err = dbConn.Close(); err != nil {
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return err
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}
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// Connect to the generated test db with the restricted privilege generated user
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dbConn, err = DBConnect(testCfg.Postgres.User, testCfg.Postgres.Pass, testCfg.Postgres.DBName, testCfg.Postgres.Host, testCfg.Postgres.Port)
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if err != nil {
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return err
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}
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// Write the generated user password to a tmp file for pg_dump
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testPwBytes := []byte(fmt.Sprintf("%s:%d:%s:%s:%s",
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testCfg.Postgres.Host,
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testCfg.Postgres.Port,
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testCfg.Postgres.DBName,
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testCfg.Postgres.User,
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testCfg.Postgres.Pass,
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))
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testPassFilePath := passDir + "/testpwfile"
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err = ioutil.WriteFile(testPassFilePath, testPwBytes, 0600)
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if err != nil {
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return fmt.Errorf("Unable to create testpwfile in passDir: %s", err)
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}
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// The params for the psql schema import command
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params = []string{
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fmt.Sprintf(`--dbname=%s`, testCfg.Postgres.DBName),
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fmt.Sprintf(`--host=%s`, testCfg.Postgres.Host),
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fmt.Sprintf(`--port=%d`, testCfg.Postgres.Port),
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fmt.Sprintf(`--username=%s`, testCfg.Postgres.User),
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fmt.Sprintf(`--file=%s`, fhSchema.Name()),
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}
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// Import the database schema into the generated database.
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// It is now ready to be used by the generated ORM package for testing.
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outBuf := bytes.Buffer{}
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cmd = exec.Command("psql", params...)
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cmd.Stderr = &errBuf
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cmd.Stdout = &outBuf
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cmd.Env = append(os.Environ(), fmt.Sprintf(`PGPASSFILE=%s`, testPassFilePath))
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if err = cmd.Run(); err != nil {
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fmt.Printf("psql schema import exec failed: %s\n\n%s\n", err, errBuf.String())
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}
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return nil
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}
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// createTestUser creates a temporary database user with restricted privileges
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func createTestUser(db *sql.DB) error {
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now := time.Now().Add(time.Hour * 24 * 2)
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valid := now.Format("2006-1-2")
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query := fmt.Sprintf(`CREATE USER %s WITH PASSWORD '%s' VALID UNTIL '%s';`,
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testCfg.Postgres.User,
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testCfg.Postgres.Pass,
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valid,
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)
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_, err := dbConn.Exec(query)
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return err
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}
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