riemenschneider commented on issue #13696:
URL: https://github.com/apache/iceberg/issues/13696#issuecomment-3133150695
The following test can be used to reproduce the issue.
```
import java.io.IOException;
import java.util.Map;
import org.apache.iceberg.Schema;
import org.apache.iceberg.Table;
import org.apache.iceberg.UpdateSchema;
import org.apache.iceberg.catalog.Namespace;
import org.apache.iceberg.catalog.TableIdentifier;
import org.apache.iceberg.inmemory.InMemoryCatalog;
import org.apache.iceberg.types.Types;
import org.junit.Assert;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.CsvSource;
class UpdateSchemaCaseSensitivityTest {
@ParameterizedTest
@CsvSource(
value = {
"true, true, true",
"false, true, true",
"true, false, false",
"false, false, false"
}
)
void test(boolean addOneColumnPerSchemaUpdate, boolean caseSensitive,
boolean expectSuccess) throws IOException{
try (InMemoryCatalog catalog = new InMemoryCatalog()) {
catalog.initialize("catalog", Map.of());
Namespace namespace = Namespace.of("namespace");
catalog.createNamespace(namespace);
Table table = catalog.createTable(TableIdentifier.of(namespace,
"table"), new Schema());
UpdateSchema updateSchema = table.updateSchema()
.caseSensitive(caseSensitive)
.addColumn("column", Types.IntegerType.get());
if (addOneColumnPerSchemaUpdate) {
updateSchema.commit();
updateSchema = table.updateSchema()
.caseSensitive(caseSensitive);
}
try {
updateSchema.addColumn("COLUMN", Types.IntegerType.get());
if (!expectSuccess) {
Assert.fail("Expected failure due to case sensitivity,
but succeeded.");
}
} catch (IllegalArgumentException e) {
if (expectSuccess) {
throw e; // Unexpected failure
}
// Expected failure due to case sensitivity
}
updateSchema.commit();
}
}
}
```
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