kaspad/blockdag/test_utils.go
Ori Newman 7093155c3a [DEV-234] Add to txindex method to return the block in which tx was accepted (or indication it was not accepted) (#116)
* [DEV-234] add TxAcceptedInBlock and TxBlocks

* [DEV-234] test TxAcceptedInBlock and TxBlocks

* [DEV-234] test TxAcceptedInBlock and TxFirstBlockRegion

* [DEV-234] rename selectedPathSet to selectedPathChain

* [DEV-234] set indexers db as part of index manager initialization

* [DEV-234] remove redudant dag instance in txindex

* [DEV-234] fix TestTxIndexConnectBlock and add DAGParams as part of config in DAGSetup

* [DEV-234] TestTxIndexConnectBlock make K=1 to make calculations easier

* [DEV-234] rename TxAcceptingBlock to BlockThatAcceptedTx

* [DEV-234] update block fields names in txindex_test.go

* [DEV-234] rename selectedPathChain -> selectedPathChainSet
2018-11-05 16:11:54 +02:00

97 lines
2.5 KiB
Go

package blockdag
import (
"fmt"
"os"
"path/filepath"
"github.com/daglabs/btcd/database"
_ "github.com/daglabs/btcd/database/ffldb" // blank import ffldb so that its init() function runs before tests
"github.com/daglabs/btcd/txscript"
"github.com/daglabs/btcd/wire"
)
const (
// testDbType is the database backend type to use for the tests.
testDbType = "ffldb"
// testDbRoot is the root directory used to create all test databases.
testDbRoot = "testdbs"
// blockDataNet is the expected network in the test block data.
blockDataNet = wire.MainNet
)
// isSupportedDbType returns whether or not the passed database type is
// currently supported.
func isSupportedDbType(dbType string) bool {
supportedDrivers := database.SupportedDrivers()
for _, driver := range supportedDrivers {
if dbType == driver {
return true
}
}
return false
}
// filesExists returns whether or not the named file or directory exists.
func fileExists(name string) bool {
if _, err := os.Stat(name); err != nil {
if os.IsNotExist(err) {
return false
}
}
return true
}
// DAGSetup is used to create a new db and chain instance with the genesis
// block already inserted. In addition to the new chain instance, it returns
// a teardown function the caller should invoke when done testing to clean up.
func DAGSetup(dbName string, config Config) (*BlockDAG, func(), error) {
if !isSupportedDbType(testDbType) {
return nil, nil, fmt.Errorf("unsupported db type %v", testDbType)
}
var teardown func()
if config.DB == nil {
// Create the root directory for test databases.
if !fileExists(testDbRoot) {
if err := os.MkdirAll(testDbRoot, 0700); err != nil {
err := fmt.Errorf("unable to create test db "+
"root: %v", err)
return nil, nil, err
}
}
dbPath := filepath.Join(testDbRoot, dbName)
_ = os.RemoveAll(dbPath)
var err error
config.DB, err = database.Create(testDbType, dbPath, blockDataNet)
if err != nil {
return nil, nil, fmt.Errorf("error creating db: %v", err)
}
// Setup a teardown function for cleaning up. This function is
// returned to the caller to be invoked when it is done testing.
teardown = func() {
config.DB.Close()
os.RemoveAll(dbPath)
os.RemoveAll(testDbRoot)
}
}
config.TimeSource = NewMedianTime()
config.SigCache = txscript.NewSigCache(1000)
// Create the DAG instance.
dag, err := New(&config)
if err != nil {
teardown()
err := fmt.Errorf("failed to create dag instance: %v", err)
return nil, nil, err
}
return dag, teardown, nil
}