test: add test.State (#239)

* separate test utility and interface implementation
   for test.Governance.
* add test.State.
* integrate test.State to test.Governance.

test.State is mainly used to emulate state propagation
on fullnode.

1 files changed, 14 insertions, 0 deletions

diff --git a/core/test/utils.go b/core/test/utils.go
index 2fc21ce..0bb82b8 100644
--- a/core/test/utils.go
+++ b/core/test/utils.go
@@ -102,3 +102,17 @@ func FindMyIP() (ip string, err error) {
 	err = fmt.Errorf("unable to find IP")
 	return
 }
+
+// NewKeys creates private keys and corresponding public keys as slice.
+func NewKeys(count int) (
+	prvKeys []crypto.PrivateKey, pubKeys []crypto.PublicKey, err error) {
+	for i := 0; i < count; i++ {
+		var prvKey crypto.PrivateKey
+		if prvKey, err = ecdsa.NewPrivateKey(); err != nil {
+			return
+		}
+		prvKeys = append(prvKeys, prvKey)
+		pubKeys = append(pubKeys, prvKey.PublicKey())
+	}
+	return
+}