diff --git a/pkg/structure/value_test.go b/pkg/structure/value_test.go
new file mode 100644
index 0000000..4e660e6
--- /dev/null
+++ b/pkg/structure/value_test.go
@@ -0,0 +1,86 @@
+package structure
+
+import (
+	"strconv"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestValue_SetString(t *testing.T) {
+	value := Value{
+		val: make([]byte, 32, 64),
+	}
+	testStr := "awjkbk沙袋jdawd"
+	value.SetString(testStr)
+
+	require.Equal(t, testStr, value.ToString())
+}
+
+func TestValue_GetString(t *testing.T) {
+	value := NewValue()
+	str := ""
+	for i := 0; i < 100; i++ {
+		str += strconv.Itoa(i)
+	}
+	value.SetString(str)
+	require.Equal(t, value.ToString(), str)
+
+	value.SetString("aw1")
+	require.Equal(t, value.ToString(), "aw1")
+}
+
+func Test_IntToBytes(t *testing.T) {
+	value := NewValue()
+	value.SetInt(2<<62 - 1)
+	require.Equal(t, value.GetLength(), 8)
+}
+
+func TestValue_ToInt(t *testing.T) {
+	value := NewValue()
+	value.SetInt(90)
+	rel, err := value.ToInt()
+	require.NoError(t, err)
+	require.Equal(t, rel, int64(90))
+	value.SetString("abc")
+	require.Equal(t, value.ToString(), "abc")
+	_, err = value.ToInt()
+	require.Error(t, err)
+}
+
+func TestValue_SetFloat64(t *testing.T) {
+	value := NewValue()
+	value.SetFloat64(2.35)
+	f, err := value.ToFloat64()
+	require.NoError(t, err)
+	require.Equal(t, f, 2.35)
+
+	value.SetInt(-10)
+	rel, err := value.ToInt()
+	require.NoError(t, err)
+	require.Equal(t, rel, int64(-10))
+
+	value.SetFloat64(-2.35)
+	f, err = value.ToFloat64()
+	require.NoError(t, err)
+	require.Equal(t, f, -2.35)
+}
+
+func TestValue_InferValue(t *testing.T) {
+	value := NewValue()
+	value.InferValue("hello world")
+	require.Equal(t, value.GetDynamicType(), DynamicString)
+	require.Equal(t, value.ToString(), "hello world")
+
+	value.InferValue("1")
+	require.Equal(t, value.GetDynamicType(), DynamicInt)
+	i, err := value.ToInt()
+	require.NoError(t, err)
+	require.Equal(t, i, int64(1))
+
+	value.InferValue("-1.2")
+	require.Equal(t, value.GetDynamicType(), DynamicFloat)
+	f, err := value.ToFloat64()
+	require.NoError(t, err)
+	require.Equal(t, f, -1.2)
+}