diff --git a/pkg/structure/channelx/channelx_test.go b/pkg/structure/channelx/channelx_test.go
index 7fffdf9..32127d8 100644
--- a/pkg/structure/channelx/channelx_test.go
+++ b/pkg/structure/channelx/channelx_test.go
@@ -14,6 +14,11 @@ func TestChannelX_Push(t *testing.T) {
 	require.Equal(t, 24, int(up))
 
 	res, up := c.Pop()
-	require.Equal(t, 24, int(up))
+	require.Equal(t, -24, int(up))
 	require.Equal(t, res, "111")
+
+	up = c.Push("111")
+	c.CLean()
+
+	require.Equal(t, c.Length(), 0)
 }