test(channelx): add channelx test

pkg/structure/channelx/channelx_test.go

@@ -0,0 +1,19 @@
+package channelx
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestChannelX_Push(t *testing.T) {
+	c := MakeChannelX(10)
+	require.Equal(t, c.Length(), 0)
+
+	up := c.Push("111")
+	require.Equal(t, 24, int(up))
+
+	res, up := c.Pop()
+	require.Equal(t, 24, int(up))
+	require.Equal(t, res, "111")
+}