rewrite checkpoint

vendor/gopkg.in/op/go-logging.v1/multi_test.go

@@ -0,0 +1,51 @@
+// Copyright 2013, Örjan Persson. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package logging
+
+import "testing"
+
+func TestMultiLogger(t *testing.T) {
+	log1 := NewMemoryBackend(8)
+	log2 := NewMemoryBackend(8)
+	SetBackend(MultiLogger(log1, log2))
+
+	log := MustGetLogger("test")
+	log.Debug("log")
+
+	if "log" != MemoryRecordN(log1, 0).Formatted(0) {
+		t.Errorf("log1: %v", MemoryRecordN(log1, 0).Formatted(0))
+	}
+	if "log" != MemoryRecordN(log2, 0).Formatted(0) {
+		t.Errorf("log2: %v", MemoryRecordN(log2, 0).Formatted(0))
+	}
+}
+
+func TestMultiLoggerLevel(t *testing.T) {
+	log1 := NewMemoryBackend(8)
+	log2 := NewMemoryBackend(8)
+
+	leveled1 := AddModuleLevel(log1)
+	leveled2 := AddModuleLevel(log2)
+
+	multi := MultiLogger(leveled1, leveled2)
+	multi.SetLevel(ERROR, "test")
+	SetBackend(multi)
+
+	log := MustGetLogger("test")
+	log.Notice("log")
+
+	if nil != MemoryRecordN(log1, 0) || nil != MemoryRecordN(log2, 0) {
+		t.Errorf("unexpected log record")
+	}
+
+	leveled1.SetLevel(DEBUG, "test")
+	log.Notice("log")
+	if "log" != MemoryRecordN(log1, 0).Formatted(0) {
+		t.Errorf("log1 not received")
+	}
+	if nil != MemoryRecordN(log2, 0) {
+		t.Errorf("log2 received")
+	}
+}