YarBor opened a new issue, #2659:
URL: https://github.com/apache/dubbo-go/issues/2659
### Environment
- Server: Dubbo-go, v3.1.1
- Client: Dubbo-go, v3.1.1
### Issue description
When submitting PR, there is a certain probability that this test case will
go wrong.
There is a contradiction in its logic.
```go
t.Run("sum_error", func(t *testing.T) {
stream, err := client.Sum(context.Background())
assert.Nil(t, err)
// If this assertion is passed, an error will be reported in
the following case
if sendErr := stream.Send(&pingv1.SumRequest{Number: 1});
sendErr != nil {
assert.ErrorIs(t, err, io.EOF) // mey sendErr
assert.Equal(t, triple.CodeOf(err), triple.CodeUnknown)
// mey sendErr
}
err =
stream.CloseAndReceive(triple.NewResponse(&pingv1.SumResponse{}))
assert.Equal(t, triple.CodeOf(err), triple.CodeInvalidArgument)
})
```
## code link
https://github.com/apache/dubbo-go/blob/1f7eb1180cd9864aa52003b9f9cb11e8549b9a86/protocol/triple/triple_protocol/triple_ext_test.go#L166C1-L175C5
<!-- Here is a brief description about the issue. -->
### Logs
<details><summary>Click me to check logs</summary>
```
Copy logs to here.
```
</details>
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