bjchambers commented on a change in pull request #9339:
URL: https://github.com/apache/arrow/pull/9339#discussion_r565520744
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File path: rust/arrow/src/array/transform/mod.rs
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@@ -714,6 +714,48 @@ mod tests {
assert_eq!(array, expected)
}
+ #[test]
+ fn test_struct_offset() {
+ let strings: ArrayRef = Arc::new(StringArray::from(vec![
+ Some("joe"),
+ None,
+ None,
+ Some("mark"),
+ Some("doe"),
+ ]));
+ let ints: ArrayRef = Arc::new(Int32Array::from(vec![
+ Some(1),
+ Some(2),
+ Some(3),
+ Some(4),
+ Some(5),
+ ]));
+
+ let array =
+ StructArray::try_from(vec![("f1", strings.clone()), ("f2",
ints.clone())])
+ .unwrap()
+ .slice(1, 3)
+ .data();
+ let arrays = vec![array.as_ref()];
+ let mut mutable = MutableArrayData::new(arrays, false, 0);
+
+ mutable.extend(0, 1, 3);
+ let data = mutable.freeze();
+ let array = StructArray::from(Arc::new(data));
+
+ // Struct equality doesn't seem to work when using slices?
Review comment:
That makes sense. It seems like it may also affect the string array.
When I create the expected string directly instead of slicing it this test
passes (see newest commit).
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