test: add another test

influxdb3_server/src/http/v1.rs

@@ -894,4 +894,77 @@ mod tests {
         // Ensure we received exactly 4 responses
         assert_eq!(counter, 4, "Expected 4 responses, but received {}", counter);
     }
+
+    #[tokio::test]
+    async fn test_partial_flag_one_stream() {
+        let meta = serde_json::to_string(&json!({
+            "measurement_column_index": 0,
+            "tag_key_columns": [],
+        }))
+        .unwrap();
+        let schema = Arc::new(Schema::new_with_metadata(
+            vec![
+                Field::new("iox::measurement", DataType::Utf8, false),
+                Field::new(
+                    "time",
+                    DataType::Timestamp(TimeUnit::Nanosecond, None),
+                    false,
+                ),
+                Field::new("value", DataType::Utf8, true),
+            ],
+            HashMap::from([("iox::influxql::group_key::metadata".to_owned(), meta)]),
+        ));
+        let record_batch_0 = Ok(RecordBatch::try_new(
+            Arc::clone(&schema),
+            vec![
+                strs(&[Some("cpu"), Some("cpu")]),
+                times(&[1157082300000000000, 1157082310000000000]),
+                strs(&[Some("cpu0"), Some("cpu0")]),
+            ],
+        )
+        .unwrap());
+
+        let batch = vec![record_batch_0];
+        let schema = batch[0].as_ref().unwrap().schema();
+        let input_stream = stream::iter(batch);
+        let input: SendableRecordBatchStream = Box::pin(RecordBatchStreamAdapter::new(
+            schema,
+            Box::pin(input_stream),
+        ));
+        let chunk_size = Some(1);
+        let mut query_response_stream =
+            QueryResponseStream::new(0, input, chunk_size, QueryFormat::Json, None).unwrap();
+
+        // Counters for assertions
+        let mut counter = 0;
+
+        while let Some(response) = query_response_stream.next().await {
+            match response {
+                Ok(resp) => {
+                    println!("Received response: {:?}", resp);
+
+                    match counter {
+                        0 => {
+                            assert!(resp.results[0].partial.unwrap());
+                            assert!(resp.results[0].series[0].partial.unwrap());
+                            assert_eq!(resp.results[0].series[0].name, "cpu");
+                            assert_eq!(resp.results[0].series[0].values.len(), 1);
+                        }
+                        1 => {
+                            assert_eq!(resp.results[0].partial, None);
+                            assert_eq!(resp.results[0].series[0].partial, None);
+                            assert_eq!(resp.results[0].series[0].name, "cpu");
+                            assert_eq!(resp.results[0].series[0].values.len(), 1);
+                        }
+                        _ => (),
+                    }
+
+                    counter += 1;
+                }
+                Err(err) => panic!("Error while polling stream: {:?}", err),
+            }
+        }
+
+        assert_eq!(counter, 2, "Expected 2 responses, but received {}", counter);
+    }
 }