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gomigrate_test.go
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gomigrate_test.go
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package gomigrate
import (
"database/sql"
"fmt"
"log"
"os"
"testing"
_ "github.com/go-sql-driver/mysql"
_ "github.com/lib/pq"
_ "github.com/mattn/go-sqlite3"
)
var (
db *sql.DB
adapter Migratable
dbType string
)
func GetMigrator(test string) *Migrator {
path := fmt.Sprintf("test_migrations/%s_%s", test, dbType)
m, err := NewMigrator(db, adapter, path)
if err != nil {
panic(err)
}
return m
}
func TestNewMigrator(t *testing.T) {
m := GetMigrator("test1")
switch {
case dbType == "pg" && len(m.migrations) != 4:
t.Errorf("Invalid number of migrations detected")
case dbType == "mysql" && len(m.migrations) != 1:
t.Errorf("Invalid number of migrations detected")
case dbType == "sqlite3" && len(m.migrations) != 1:
t.Errorf("Invalid number of migrations detected")
}
migration := m.migrations[1]
if migration.Name != "test" {
t.Errorf("Invalid migration name detected: %s", migration.Name)
}
if migration.Id != 1 {
t.Errorf("Invalid migration num detected: %d", migration.Id)
}
if migration.Status != Inactive {
t.Errorf("Invalid migration num detected: %d", migration.Status)
}
cleanup()
}
func TestCreatingMigratorWhenTableExists(t *testing.T) {
// Create the table and populate it with a row.
_, err := db.Exec(adapter.CreateMigrationTableSql())
if err != nil {
t.Error(err)
}
_, err = db.Exec(adapter.MigrationLogInsertSql(), 123)
if err != nil {
t.Error(err)
}
GetMigrator("test1")
// Check that our row is still present.
row := db.QueryRow("select migration_id from gomigrate")
var id uint64
err = row.Scan(&id)
if err != nil {
t.Error(err)
}
if id != 123 {
t.Error("Invalid id found in database")
}
cleanup()
}
func TestMigrationAndRollback(t *testing.T) {
m := GetMigrator("test1")
if err := m.Migrate(); err != nil {
t.Error(err)
}
// Ensure that the migration ran.
row := db.QueryRow(
adapter.SelectMigrationTableSql(),
"test",
)
var tableName string
if err := row.Scan(&tableName); err != nil {
t.Error(err)
}
if tableName != "test" {
t.Errorf("Migration table not created")
}
// Ensure that the migrate status is correct.
row = db.QueryRow(
adapter.GetMigrationSql(),
1,
)
var status int
if err := row.Scan(&status); err != nil {
t.Error(err)
}
if status != Active || m.migrations[1].Status != Active {
t.Error("Invalid status for migration")
}
if err := m.RollbackN(len(m.migrations)); err != nil {
t.Error(err)
}
// Ensure that the down migration ran.
row = db.QueryRow(
adapter.SelectMigrationTableSql(),
"test",
)
err := row.Scan(&tableName)
if err != nil && err != sql.ErrNoRows {
t.Errorf("Migration table should be deleted: %v", err)
}
// Ensure that the migration log is missing.
row = db.QueryRow(
adapter.GetMigrationSql(),
1,
)
if err := row.Scan(&status); err != nil && err != sql.ErrNoRows {
t.Error(err)
}
if m.migrations[1].Status != Inactive {
t.Errorf("Invalid status for migration, expected: %d, got: %v", Inactive, m.migrations[1].Status)
}
cleanup()
}
func cleanup() {
_, err := db.Exec("drop table gomigrate")
if err != nil {
panic(err)
}
}
func init() {
var err error
switch os.Getenv("DB") {
case "mysql":
dbType = "mysql"
log.Print("Using mysql")
adapter = Mariadb{}
db, err = sql.Open("mysql", "gomigrate:password@/gomigrate")
case "sqlite3":
dbType = "sqlite3"
log.Print("Using sqlite3")
adapter = Sqlite3{}
db, err = sql.Open("sqlite3", "file::memory:?cache=shared")
default:
dbType = "pg"
log.Print("Using postgres")
adapter = Postgres{}
db, err = sql.Open("postgres", "host=localhost dbname=gomigrate sslmode=disable")
}
if err != nil {
panic(err)
}
}