Add end-to-end replication/restore testing

litestream.go

@@ -1,8 +1,10 @@
 package litestream
 
 import (
+	"crypto/md5"
 	"database/sql"
 	"encoding/binary"
+	"encoding/hex"
 	"errors"
 	"fmt"
 	"io"
@@ -43,7 +45,7 @@ var (
 
 var (
 	// LogWriter is the destination writer for all logging.
-	LogWriter = os.Stderr
+	LogWriter = os.Stdout
 
 	// LogFlags are the flags passed to log.New().
 	LogFlags = 0
@@ -460,6 +462,12 @@ func isHexChar(ch rune) bool {
 	return (ch >= '0' && ch <= '9') || (ch >= 'a' && ch <= 'f')
 }
 
+// md5hash returns a hex-encoded MD5 hash of b.
+func md5hash(b []byte) string {
+	sum := md5.Sum(b)
+	return hex.EncodeToString(sum[:])
+}
+
 // Tracef is used for low-level tracing.
 var Tracef = func(format string, a ...interface{}) {}