diff --git a/session/session.go b/session/session.go
index f40f73e..eb6ce25 100644
--- a/session/session.go
+++ b/session/session.go
@@ -116,180 +116,180 @@ func (s *Session) Set(key string, value interface{}) {
 	s.data[key] = value
 }
 
-func (s *Session) Int(key string) (int, error) {
+func (s *Session) HasKey(key string) bool {
+	_, has := s.data[key]
+	return has
+}
+
+func (s *Session) Int(key string) int {
 	v, ok := s.data[key]
 	if !ok {
-		return 0, ErrKeyNotFound
+		return 0
 	}
 
 	value, ok := v.(int)
 	if !ok {
-		return 0, ErrWrongValueType
+		return 0
 	}
-	return value, nil
+	return value
 }
 
-func (s *Session) Int8(key string) (int8, error) {
+func (s *Session) Int8(key string) int8 {
 	v, ok := s.data[key]
 	if !ok {
-		return 0, ErrKeyNotFound
+		return 0
 	}
 
 	value, ok := v.(int8)
 	if !ok {
-		return 0, ErrWrongValueType
+		return 0
 	}
-	return value, nil
+	return value
 }
 
-func (s *Session) Int16(key string) (int16, error) {
+func (s *Session) Int16(key string) int16 {
 	v, ok := s.data[key]
 	if !ok {
-		return 0, ErrKeyNotFound
+		return 0
 	}
 
 	value, ok := v.(int16)
 	if !ok {
-		return 0, ErrWrongValueType
+		return 0
 	}
-	return value, nil
+	return value
 }
 
-func (s *Session) Int32(key string) (int32, error) {
+func (s *Session) Int32(key string) int32 {
 	v, ok := s.data[key]
 	if !ok {
-		return 0, ErrKeyNotFound
+		return 0
 	}
 
 	value, ok := v.(int32)
 	if !ok {
-		return 0, ErrWrongValueType
+		return 0
 	}
-	return value, nil
+	return value
 }
 
-func (s *Session) Int64(key string) (int64, error) {
+func (s *Session) Int64(key string) int64 {
 	v, ok := s.data[key]
 	if !ok {
-		return 0, ErrKeyNotFound
+		return 0
 	}
 
 	value, ok := v.(int64)
 	if !ok {
-		return 0, ErrWrongValueType
+		return 0
 	}
-	return value, nil
+	return value
 }
 
-func (s *Session) Uint(key string) (uint, error) {
+func (s *Session) Uint(key string) uint {
 	v, ok := s.data[key]
 	if !ok {
-		return 0, ErrKeyNotFound
+		return 0
 	}
 
 	value, ok := v.(uint)
 	if !ok {
-		return 0, ErrWrongValueType
+		return 0
 	}
-	return value, nil
+	return value
 }
 
-func (s *Session) Uint8(key string) (uint8, error) {
+func (s *Session) Uint8(key string) uint8 {
 	v, ok := s.data[key]
 	if !ok {
-		return 0, ErrKeyNotFound
+		return 0
 	}
 
 	value, ok := v.(uint8)
 	if !ok {
-		return 0, ErrWrongValueType
+		return 0
 	}
-	return value, nil
+	return value
 }
 
-func (s *Session) Uint16(key string) (uint16, error) {
+func (s *Session) Uint16(key string) uint16 {
 	v, ok := s.data[key]
 	if !ok {
-		return 0, ErrKeyNotFound
+		return 0
 	}
 
 	value, ok := v.(uint16)
 	if !ok {
-		return 0, ErrWrongValueType
+		return 0
 	}
-	return value, nil
+	return value
 }
 
-func (s *Session) Uint32(key string) (uint32, error) {
+func (s *Session) Uint32(key string) uint32 {
 	v, ok := s.data[key]
 	if !ok {
-		return 0, ErrKeyNotFound
+		return 0
 	}
 
 	value, ok := v.(uint32)
 	if !ok {
-		return 0, ErrWrongValueType
+		return 0
 	}
-	return value, nil
+	return value
 }
 
-func (s *Session) Uint64(key string) (uint64, error) {
+func (s *Session) Uint64(key string) uint64 {
 	v, ok := s.data[key]
 	if !ok {
-		return 0, ErrKeyNotFound
+		return 0
 	}
 
 	value, ok := v.(uint64)
 	if !ok {
-		return 0, ErrWrongValueType
+		return 0
 	}
-	return value, nil
+	return value
 }
 
-func (s *Session) Float32(key string) (float32, error) {
+func (s *Session) Float32(key string) float32 {
 	v, ok := s.data[key]
 	if !ok {
-		return 0, ErrKeyNotFound
+		return 0
 	}
 
 	value, ok := v.(float32)
 	if !ok {
-		return 0, ErrWrongValueType
+		return 0
 	}
-	return value, nil
+	return value
 }
 
-func (s *Session) Float64(key string) (float64, error) {
+func (s *Session) Float64(key string) float64 {
 	v, ok := s.data[key]
 	if !ok {
-		return 0, ErrKeyNotFound
+		return 0
 	}
 
 	value, ok := v.(float64)
 	if !ok {
-		return 0, ErrWrongValueType
+		return 0
 	}
-	return value, nil
+	return value
 }
 
-func (s *Session) String(key string) (string, error) {
+func (s *Session) String(key string) string {
 	v, ok := s.data[key]
 	if !ok {
-		return "", ErrKeyNotFound
+		return ""
 	}
 
 	value, ok := v.(string)
 	if !ok {
-		return "", ErrWrongValueType
+		return ""
 	}
-	return value, nil
+	return value
 }
 
-func (s *Session) Value(key string) (interface{}, error) {
-	v, ok := s.data[key]
-	if !ok {
-		return nil, ErrKeyNotFound
-	}
-
-	return v, nil
+func (s *Session) Value(key string) interface{} {
+	return s.data[key]
 }
diff --git a/session/session_test.go b/session/session_test.go
index 6c9f3f5..76638b5 100644
--- a/session/session_test.go
+++ b/session/session_test.go
@@ -1,2 +1,151 @@
 package session
 
+import "testing"
+
+func TestNewSession(t *testing.T) {
+	s := NewSession(nil)
+	if s.ID < 1 {
+		t.Fail()
+	}
+}
+
+func TestSession_Bind(t *testing.T) {
+	s := NewSession(nil)
+	uids := []int64{100,1000,10000000}
+	for i, uid := range uids {
+		s.Bind(uid)
+		if s.Uid != uids[i] {
+			t.Fail()
+		}
+	}
+}
+
+func TestSession_HasKey(t *testing.T) {
+	s := NewSession(nil)
+	key := "hello"
+	value := "world"
+	s.Set(key,value)
+	if !s.HasKey(key) {
+		t.Fail()
+	}
+}
+
+func TestSession_Float32(t *testing.T) {
+	s := NewSession(nil)
+	key := "hello"
+	value := float32(1.2000)
+	s.Set(key,value)
+	if value != s.Float32(key) {
+		t.Fail()
+	}
+}
+
+func TestSession_Float64(t *testing.T) {
+	s := NewSession(nil)
+	key := "hello"
+	value := 1.2000
+	s.Set(key,value)
+	if value != s.Float64(key) {
+		t.Fail()
+	}
+}
+
+func TestSession_Int(t *testing.T) {
+s := NewSession(nil)
+	key := "testkey"
+	value := 234
+	s.Set(key,value)
+	if value != s.Int(key) {
+		t.Fail()
+	}
+}
+
+func TestSession_Int8(t *testing.T) {
+s := NewSession(nil)
+	key := "testkey"
+	value := int8(123)
+	s.Set(key,value)
+	if value != s.Int8(key) {
+		t.Fail()
+	}
+}
+
+func TestSession_Int16(t *testing.T) {
+s := NewSession(nil)
+	key := "testkey"
+	value := int16(3245)
+	s.Set(key,value)
+	if value != s.Int16(key) {
+		t.Fail()
+	}
+}
+
+func TestSession_Int32(t *testing.T) {
+s := NewSession(nil)
+	key := "testkey"
+	value := int32(5454)
+	s.Set(key,value)
+	if value != s.Int32(key) {
+		t.Fail()
+	}
+}
+
+func TestSession_Int64(t *testing.T) {
+s := NewSession(nil)
+	key := "testkey"
+	value := int64(444454)
+	s.Set(key,value)
+	if value != s.Int64(key) {
+		t.Fail()
+	}
+}
+
+func TestSession_Uint(t *testing.T) {
+s := NewSession(nil)
+	key := "testkey"
+	value := uint(24254)
+	s.Set(key,value)
+	if value != s.Uint(key) {
+		t.Fail()
+	}
+}
+
+func TestSession_Uint8(t *testing.T) {
+s := NewSession(nil)
+	key := "testkey"
+	value := uint8(34)
+	s.Set(key,value)
+	if value != s.Uint8(key) {
+		t.Fail()
+	}
+}
+
+func TestSession_Uint16(t *testing.T) {
+s := NewSession(nil)
+	key := "testkey"
+	value := uint16(4645)
+	s.Set(key,value)
+	if value != s.Uint16(key) {
+		t.Fail()
+	}
+}
+
+func TestSession_Uint32(t *testing.T) {
+s := NewSession(nil)
+	key := "testkey"
+	value := uint32(12365)
+	s.Set(key,value)
+	if value != s.Uint32(key) {
+		t.Fail()
+	}
+}
+
+func TestSession_Uint64(t *testing.T) {
+s := NewSession(nil)
+	key := "testkey"
+	value := uint64(1000)
+	s.Set(key,value)
+	if value != s.Uint64(key) {
+		t.Fail()
+	}
+}
\ No newline at end of file