rdblue commented on code in PR #12374:
URL: https://github.com/apache/iceberg/pull/12374#discussion_r1966203879
##########
api/src/test/java/org/apache/iceberg/variants/TestSerializedMetadata.java:
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@@ -44,7 +44,7 @@ public void testEmptyVariantMetadata() {
@Test
public void testHeaderSorted() {
- SerializedMetadata metadata = SerializedMetadata.from(new byte[] {0b10001,
0x00});
+ SerializedMetadata metadata = SerializedMetadata.from(new byte[] {0b10001,
0x00, 0x00});
Review Comment:
We have those helpers in `VariantTestUtil`, but most of the tests here use
hard-coded byte arrays for a couple reasons. First, I don't want to rely on
equally complicated code. The most basic cases (like whether the sorted flag is
set) should use values created directly from the spec. Second, it's hard to
exercise the cases with generated values. For instance, `testHeaderOffsetSize`
checks the offset size without needing to generate a metadata dictionary that
has more than 65k unique values. There's a test that does this later
(`testThreeByteFieldIds`) but that's testing the offsets and it is good to know
from an independent test that the offset size is being interpreted correctly.
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