alamb commented on a change in pull request #16:
URL: https://github.com/apache/arrow-rs/pull/16#discussion_r617547804
##########
File path: arrow/src/json/writer.rs
##########
@@ -709,6 +715,56 @@ mod tests {
);
}
+ #[test]
+ fn write_dictionary() {
+ let schema = Schema::new(vec![
+ Field::new(
+ "c1",
+ DataType::Dictionary(Box::new(DataType::Int32),
Box::new(DataType::Utf8)),
+ true,
+ ),
+ Field::new(
+ "c2",
+ DataType::Dictionary(Box::new(DataType::Int8),
Box::new(DataType::Utf8)),
+ true,
+ ),
+ ]);
+
+ let a: DictionaryArray<Int32Type> = vec![
+ Some("cupcakes"),
+ Some("foo"),
+ Some("foo"),
+ None,
+ Some("cupcakes"),
+ ]
+ .into_iter()
+ .collect();
+ let b: DictionaryArray<Int8Type> =
+ vec![Some("sdsd"), Some("sdsd"), None, Some("sd"), Some("sdsd")]
+ .into_iter()
+ .collect();
+
+ let batch =
+ RecordBatch::try_new(Arc::new(schema), vec![Arc::new(a),
Arc::new(b)])
+ .unwrap();
+
+ let mut buf = Vec::new();
+ {
+ let mut writer = LineDelimitedWriter::new(&mut buf);
+ writer.write_batches(&[batch]).unwrap();
+ }
+
+ assert_eq!(
+ String::from_utf8(buf).unwrap(),
+ r#"{"c1":"cupcakes","c2":"sdsd"}
Review comment:
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