brunal commented on code in PR #46408:
URL: https://github.com/apache/arrow/pull/46408#discussion_r2109886186
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cpp/src/arrow/ipc/read_write_test.cc:
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@@ -579,6 +579,40 @@ TEST_F(TestIpcRoundTrip, SpecificMetadataVersion) {
TestMetadataVersion(MetadataVersion::V5);
}
+TEST_F(TestIpcRoundTrip, AlienSlice) {
+ // This tests serialization of a sliced ListArray that got sliced "the Rust
+ // way": by slicing the value_offsets buffer, but keeping top-level offset at
+ // 0.
+
+ // Values buffer [1, 2, 3, 4, 5]
+ TypedBufferBuilder<int32_t> values_builder;
+ ASSERT_OK(values_builder.Reserve(5));
+ for (int32_t i = 1; i <= 5; i++) {
+ ASSERT_OK(values_builder.Append(i));
+ }
+ ASSERT_OK_AND_ASSIGN(auto values_buffer, values_builder.Finish());
Review Comment:
That gives me an Array though and not a Buffer. I'd have to go fetch its
buffers[0] and I'm not sure that's the best thing to do.
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