huaxingao commented on code in PR #13450:
URL: https://github.com/apache/iceberg/pull/13450#discussion_r2255459614
##########
spark/v4.0/spark/src/test/java/org/apache/iceberg/spark/data/vectorized/parquet/TestParquetVectorizedReads.java:
##########
@@ -416,4 +439,60 @@ public void testUuidReads() throws Exception {
}
assertRecordsMatch(schema, numRows, data, dataFile, false, BATCH_SIZE);
}
+
+ private void assertIdenticalFileContents(File actual, File expected, Schema
schema)
+ throws IOException {
+ try (CloseableIterable<InternalRow> actualReader =
+ Parquet.read(Files.localInput(actual))
+ .project(schema)
+ .createReaderFunc(t -> SparkParquetReaders.buildReader(schema, t,
ID_TO_CONSTANT))
+ .build()) {
+ Iterator<InternalRow> actualIterator = actualReader.iterator();
+ try (CloseableIterable<InternalRow> plainReader =
+ Parquet.read(Files.localInput(expected))
+ .project(schema)
+ .createReaderFunc(t -> SparkParquetReaders.buildReader(schema,
t, ID_TO_CONSTANT))
+ .build()) {
+ Iterator<InternalRow> expectedIterator = plainReader.iterator();
+
+ List<InternalRow> expectedList = Lists.newArrayList();
+ expectedIterator.forEachRemaining(expectedList::add);
+ List<InternalRow> actualList = Lists.newArrayList();
+ actualIterator.forEachRemaining(actualList::add);
+
+ assertThat(actualList).isNotEmpty();
+ assertThat(actualList).hasSameSizeAs(expectedList);
+ assertThat(actualList).hasSameElementsAs(expectedList);
Review Comment:
Nit: Shall we include the `encoding` and `typeName` in the assertion
message? That way, it’s easier to identify which pair failed if the test fails
```
assertThat(actualList)
.as("Validation failed for encoding %s and type %s", encoding, typeName)
.isNotEmpty()
.hasSameSizeAs(expectedList)
.hasSameElementsAs(expectedList);
```
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