diff --git a/level_test.go b/level_test.go
index d994c7e..031b574 100644
--- a/level_test.go
+++ b/level_test.go
@@ -1,6 +1,7 @@
 package log
 
 import (
+	"strings"
 	"testing"
 )
 
@@ -23,6 +24,11 @@ func TestLevelToString(t *testing.T) {
 		if got != tt.wantOut {
 			t.Errorf("%v.String() output = %v, want %v", tt.level, got, tt.wantOut)
 		}
+
+		gotColor := tt.level.ColorString()
+		if !strings.Contains(gotColor, tt.wantOut) {
+			t.Errorf("%v.ColorString() output = %v, want %v", tt.level, gotColor, tt.wantOut)
+		}
 	}
 }
 
diff --git a/log.go b/log.go
index 5fad06e..004e5ad 100644
--- a/log.go
+++ b/log.go
@@ -13,6 +13,11 @@ func IsInfoEnabled() bool {
 	return Default.IsInfoEnabled()
 }
 
+// Indicate whether output info message
+func IsPrintEnabled() bool {
+	return Default.IsPrintEnabled()
+}
+
 // Indicate whether output warning message
 func IsWarnEnabled() bool {
 	return Default.IsWarnEnabled()
@@ -23,6 +28,11 @@ func IsErrorEnabled() bool {
 	return Default.IsErrorEnabled()
 }
 
+// Indicate whether output panic message
+func IsPanicEnabled() bool {
+	return Default.IsPanicEnabled()
+}
+
 // Indicate whether output fatal message
 func IsFatalEnabled() bool {
 	return Default.IsFatalEnabled()
diff --git a/logger.go b/logger.go
index ac52a3f..5ef292b 100644
--- a/logger.go
+++ b/logger.go
@@ -32,6 +32,10 @@ func (l *Logger) IsInfoEnabled() bool {
 	return l.Level >= INFO
 }
 
+func (l *Logger) IsPrintEnabled() bool {
+	return l.Level > OFF
+}
+
 func (l *Logger) IsWarnEnabled() bool {
 	return l.Level >= WARN
 }
@@ -40,12 +44,16 @@ func (l *Logger) IsErrorEnabled() bool {
 	return l.Level >= ERROR
 }
 
+func (l *Logger) IsPanicEnabled() bool {
+	return l.Level >= PANIC
+}
+
 func (l *Logger) IsFatalEnabled() bool {
 	return l.Level >= FATAL
 }
 
 func (l *Logger) IsDisabled() bool {
-	return l.Level >= OFF
+	return l.Level <= OFF
 }
 
 func (l *Logger) Debug(obj ...interface{}) {
diff --git a/logger_test.go b/logger_test.go
index b020343..18ceeee 100644
--- a/logger_test.go
+++ b/logger_test.go
@@ -28,25 +28,27 @@ func init() {
 
 func TestLogOnLevel(t *testing.T) {
 	type fns struct {
+		fn0     func() bool
 		fn1     func(...interface{})
 		fn2     func(...interface{})
 		fn3     func(string, ...interface{})
 		ispanic bool
 		isexit  bool
 	}
-	debugFns := fns{Debug, Debugln, Debugf, false, false}
-	infoFns := fns{Info, Infoln, Infof, false, false}
-	printFns := fns{Print, Println, Printf, false, false}
-	warnFns := fns{Warn, Warnln, Warnf, false, false}
-	errorFns := fns{Error, Errorln, Errorf, false, false}
-	panicFns := fns{Panic, Panicln, Panicf, true, false}
-	fatalFns := fns{Fatal, Fatalln, Fatalf, false, true}
+	debugFns := fns{IsDebugEnabled, Debug, Debugln, Debugf, false, false}
+	infoFns := fns{IsInfoEnabled, Info, Infoln, Infof, false, false}
+	printFns := fns{IsPrintEnabled, Print, Println, Printf, false, false}
+	warnFns := fns{IsWarnEnabled, Warn, Warnln, Warnf, false, false}
+	errorFns := fns{IsErrorEnabled, Error, Errorln, Errorf, false, false}
+	panicFns := fns{IsPanicEnabled, Panic, Panicln, Panicf, true, false}
+	fatalFns := fns{IsFatalEnabled, Fatal, Fatalln, Fatalf, false, true}
 
 	tests := []struct {
 		level Level
 		fns   fns
 		hits  int
 	}{
+		// 0
 		{level: DEBUG, fns: debugFns, hits: 1},
 		{level: DEBUG, fns: infoFns, hits: 1},
 		{level: DEBUG, fns: printFns, hits: 1},
@@ -54,7 +56,7 @@ func TestLogOnLevel(t *testing.T) {
 		{level: DEBUG, fns: errorFns, hits: 1},
 		{level: DEBUG, fns: panicFns, hits: 1},
 		{level: DEBUG, fns: fatalFns, hits: 1},
-
+		// 7
 		{level: INFO, fns: debugFns, hits: 0},
 		{level: INFO, fns: infoFns, hits: 1},
 		{level: INFO, fns: printFns, hits: 1},
@@ -62,7 +64,7 @@ func TestLogOnLevel(t *testing.T) {
 		{level: INFO, fns: errorFns, hits: 1},
 		{level: INFO, fns: panicFns, hits: 1},
 		{level: INFO, fns: fatalFns, hits: 1},
-
+		// 14
 		{level: WARN, fns: debugFns, hits: 0},
 		{level: WARN, fns: infoFns, hits: 0},
 		{level: WARN, fns: printFns, hits: 1},
@@ -70,7 +72,7 @@ func TestLogOnLevel(t *testing.T) {
 		{level: WARN, fns: errorFns, hits: 1},
 		{level: WARN, fns: panicFns, hits: 1},
 		{level: WARN, fns: fatalFns, hits: 1},
-
+		// 21
 		{level: ERROR, fns: debugFns, hits: 0},
 		{level: ERROR, fns: infoFns, hits: 0},
 		{level: ERROR, fns: printFns, hits: 1},
@@ -78,7 +80,7 @@ func TestLogOnLevel(t *testing.T) {
 		{level: ERROR, fns: errorFns, hits: 1},
 		{level: ERROR, fns: panicFns, hits: 1},
 		{level: ERROR, fns: fatalFns, hits: 1},
-
+		// 28
 		{level: PANIC, fns: debugFns, hits: 0},
 		{level: PANIC, fns: infoFns, hits: 0},
 		{level: PANIC, fns: printFns, hits: 1},
@@ -86,7 +88,7 @@ func TestLogOnLevel(t *testing.T) {
 		{level: PANIC, fns: errorFns, hits: 0},
 		{level: PANIC, fns: panicFns, hits: 1},
 		{level: PANIC, fns: fatalFns, hits: 1},
-
+		// 35
 		{level: FATAL, fns: debugFns, hits: 0},
 		{level: FATAL, fns: infoFns, hits: 0},
 		{level: FATAL, fns: printFns, hits: 1},
@@ -94,7 +96,7 @@ func TestLogOnLevel(t *testing.T) {
 		{level: FATAL, fns: errorFns, hits: 0},
 		{level: FATAL, fns: panicFns, hits: 0},
 		{level: FATAL, fns: fatalFns, hits: 1},
-
+		// 42
 		{level: OFF, fns: debugFns, hits: 0},
 		{level: OFF, fns: infoFns, hits: 0},
 		{level: OFF, fns: printFns, hits: 0},
@@ -129,6 +131,17 @@ func TestLogOnLevel(t *testing.T) {
 			tt.fns.fn2("message")
 			tt.fns.fn3("message")
 
+			// check is enabled
+			if tt.fns.fn0() {
+				if logHits == 0 {
+					t.Errorf("Case %d, IsEnabled, but no log hits", i)
+				}
+			} else {
+				if logHits != 0 {
+					t.Errorf("Case %d, not IsEnabled, but found log hits=%v", i, logHits)
+				}
+			}
+
 			// check log hits
 			if logHits != tt.hits*3 {
 				t.Errorf("Case %d, fn hits on level %v, got %v, want %v", i, tt.level, logHits, tt.hits)