Begin implementation of local client

rpc/client/local/app_test.go

@@ -0,0 +1,45 @@
+package localclient_test
+
+import (
+	"math/rand"
+
+	meapp "github.com/tendermint/merkleeyes/app"
+
+	wire "github.com/tendermint/go-wire"
+)
+
+// MakeTxKV returns a text transaction, allong with expected key, value pair
+func MakeTxKV() ([]byte, []byte, []byte) {
+	k := RandAsciiBytes(8)
+	v := RandAsciiBytes(8)
+	return k, v, makeSet(k, v)
+}
+
+// blatently copied from merkleeyes/app/app_test.go
+// constructs a "set" transaction
+func makeSet(key, value []byte) []byte {
+	tx := make([]byte, 1+wire.ByteSliceSize(key)+wire.ByteSliceSize(value))
+	buf := tx
+	buf[0] = meapp.WriteSet // Set TypeByte
+	buf = buf[1:]
+	n, err := wire.PutByteSlice(buf, key)
+	if err != nil {
+		panic(err)
+	}
+	buf = buf[n:]
+	n, err = wire.PutByteSlice(buf, value)
+	if err != nil {
+		panic(err)
+	}
+	return tx
+}
+
+const letterBytes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
+
+func RandAsciiBytes(n int) []byte {
+	b := make([]byte, n)
+	for i := range b {
+		b[i] = letterBytes[rand.Intn(len(letterBytes))]
+	}
+	return b
+}