Log improvements (#819)

* add more log levels
* add test to check new code added

log/log.go

@@ -29,6 +29,12 @@ const (
 	LogInfo
 	// LogDebug sets the logging verbosity to debug
 	LogDebug
+	// LogWarn sets the logging verbosity to warn
+	LogWarn
+	// LogError sets the logging verbosity to error
+	LogError
+	// LogAll sets the logging verbosity to all
+	LogAll
 )
 
 const logStackDepth = 6
@@ -76,6 +82,12 @@ func NewLogger(l log.Logger, level int) Logger {
 		opt = lvl.AllowInfo()
 	case LogDebug:
 		opt = lvl.AllowDebug()
+	case LogWarn:
+		opt = lvl.AllowWarn()
+	case LogError:
+		opt = lvl.AllowError()
+	case LogAll:
+		opt = lvl.AllowAll()
 	default:
 		panic("unknown log level")
 	}

log/log_test.go

@@ -17,6 +17,8 @@ func TestLoggerKit(t *testing.T) {
 		Debug
 		Warn
 		Error
+		All
+		None
 	)
 
 	type logTest struct {
@@ -36,6 +38,9 @@ func TestLoggerKit(t *testing.T) {
 	var tests = []logTest{
 		{nil, nil, Info, "hello", o("hello")},
 		{nil, lvl.AllowInfo(), Debug, "hello", nil},
+		{nil, lvl.AllowError(), Error, "hello", o("hello")},
+		{nil, lvl.AllowAll(), All, "hello", o("hello")},
+		{nil, lvl.AllowNone(), None, "hello", nil},
 		{w("yard", "bird"), lvl.AllowWarn(), Warn, "hello", o("yard", "bird", "hello")},
 	}
 
@@ -61,6 +66,10 @@ func TestLoggerKit(t *testing.T) {
 			logging = kit.Warn
 		case Error:
 			logging = kit.Error
+		case All:
+			logging = kit.Info
+		case None:
+			logging = kit.Info
 		default:
 			t.FailNow()
 		}