Пример #1
0
// TestCreateOpenFail ensures that errors which occur while opening or closing
// a database are handled properly.
func TestCreateOpenFail(t *testing.T) {
	// bogusCreateDB is a function which acts as a bogus create and open
	// driver function that intentionally returns a failure which can be
	// detected.
	dbType := "createopenfail"
	openError := fmt.Errorf("failed to create or open database for "+
		"database type [%v]", dbType)
	bogusCreateDB := func(args ...interface{}) (database.Db, error) {
		return nil, openError
	}

	// Create and add driver that intentionally fails when created or opened
	// to ensure errors on database open and create are handled properly.
	driver := database.DriverDB{
		DbType:   dbType,
		CreateDB: bogusCreateDB,
		OpenDB:   bogusCreateDB,
	}
	database.AddDBDriver(driver)

	// Ensure creating a database with the new type fails with the expected
	// error.
	_, err := database.CreateDB(dbType, "createfailtest")
	if err != openError {
		t.Errorf("TestCreateOpenFail: expected error not received - "+
			"got: %v, want %v", err, openError)
		return
	}

	// Ensure opening a database with the new type fails with the expected
	// error.
	_, err = database.OpenDB(dbType, "openfailtest")
	if err != openError {
		t.Errorf("TestCreateOpenFail: expected error not received - "+
			"got: %v, want %v", err, openError)
		return
	}
}
Пример #2
0
// TestAddDuplicateDriver ensures that adding a duplicate driver does not
// overwrite an existing one.
func TestAddDuplicateDriver(t *testing.T) {
	supportedDBs := database.SupportedDBs()
	if len(supportedDBs) == 0 {
		t.Errorf("TestAddDuplicateDriver: No backends to test")
		return
	}
	dbType := supportedDBs[0]

	// bogusCreateDB is a function which acts as a bogus create and open
	// driver function and intentionally returns a failure that can be
	// detected if the interface allows a duplicate driver to overwrite an
	// existing one.
	bogusCreateDB := func(args ...interface{}) (database.Db, error) {
		return nil, fmt.Errorf("duplicate driver allowed for database "+
			"type [%v]", dbType)
	}

	// Create a driver that tries to replace an existing one.  Set its
	// create and open functions to a function that causes a test failure if
	// they are invoked.
	driver := database.DriverDB{
		DbType:   dbType,
		CreateDB: bogusCreateDB,
		OpenDB:   bogusCreateDB,
	}
	database.AddDBDriver(driver)

	// Ensure creating a database of the type that we tried to replace
	// doesn't fail (if it does, it indicates the driver was erroneously
	// replaced).
	_, teardown, err := createDB(dbType, "dupdrivertest", true)
	if err != nil {
		t.Errorf("TestAddDuplicateDriver: %v", err)
		return
	}
	teardown()
}
Пример #3
0
func init() {
	database.AddDBDriver(self)
}
Пример #4
0
func init() {
	driver := database.DriverDB{DbType: "memdb", CreateDB: CreateDB, OpenDB: OpenDB}
	database.AddDBDriver(driver)
}