rafthttp: add peer tests

rafthttp/peer_test.go

@@ -0,0 +1,87 @@
+// Copyright 2015 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package rafthttp
+
+import (
+	"testing"
+
+	"github.com/coreos/etcd/raft/raftpb"
+)
+
+func TestPeerPick(t *testing.T) {
+	tests := []struct {
+		msgappWorking  bool
+		messageWorking bool
+		m              raftpb.Message
+		wpicked        string
+	}{
+		{
+			true, true,
+			raftpb.Message{Type: raftpb.MsgSnap},
+			"pipeline",
+		},
+		{
+			true, true,
+			raftpb.Message{Type: raftpb.MsgApp, Term: 1, LogTerm: 1},
+			"msgapp stream",
+		},
+		{
+			true, true,
+			raftpb.Message{Type: raftpb.MsgProp},
+			"general stream",
+		},
+		{
+			true, true,
+			raftpb.Message{Type: raftpb.MsgHeartbeat},
+			"general stream",
+		},
+		{
+			false, true,
+			raftpb.Message{Type: raftpb.MsgApp, Term: 1, LogTerm: 1},
+			"general stream",
+		},
+		{
+			false, false,
+			raftpb.Message{Type: raftpb.MsgApp, Term: 1, LogTerm: 1},
+			"pipeline",
+		},
+		{
+			false, false,
+			raftpb.Message{Type: raftpb.MsgProp},
+			"pipeline",
+		},
+		{
+			false, false,
+			raftpb.Message{Type: raftpb.MsgSnap},
+			"pipeline",
+		},
+		{
+			false, false,
+			raftpb.Message{Type: raftpb.MsgHeartbeat},
+			"pipeline",
+		},
+	}
+	for i, tt := range tests {
+		peer := &peer{
+			msgAppWriter: &streamWriter{working: tt.msgappWorking},
+			writer:       &streamWriter{working: tt.messageWorking},
+			pipeline:     &pipeline{},
+		}
+		_, picked, _ := peer.pick(tt.m)
+		if picked != tt.wpicked {
+			t.Errorf("#%d: picked = %v, want %v", i, picked, tt.wpicked)
+		}
+	}
+}