nastra commented on code in PR #3663:
URL: https://github.com/apache/parquet-java/pull/3663#discussion_r3585423347


##########
parquet-hadoop/src/test/java/org/apache/parquet/hadoop/TestParquetFileWriter.java:
##########
@@ -1498,6 +1505,94 @@ public void 
testMergeMetadataWithNoConflictingKeyValues() {
     assertEquals("d", mergedValues.get("c"));
   }
 
+  @Test
+  public void testConstructorClosesStreamWhenEncryptedColumnMissing() throws 
Exception {
+    ColumnEncryptionProperties missingColumn = 
ColumnEncryptionProperties.builder("not_in_schema")
+        .withKey("0123456789012345".getBytes(StandardCharsets.UTF_8))
+        .build();
+    Map<ColumnPath, ColumnEncryptionProperties> encryptedColumns = new 
HashMap<>();
+    encryptedColumns.put(missingColumn.getPath(), missingColumn);
+    FileEncryptionProperties encryptionProperties = 
FileEncryptionProperties.builder(
+            "0123456789012345".getBytes(StandardCharsets.UTF_8))
+        .withEncryptedColumns(encryptedColumns)
+        .build();
+
+    RecordingOutputFile file = new RecordingOutputFile();
+    try {
+      new ParquetFileWriter(
+          file,
+          SCHEMA,
+          CREATE,
+          DEFAULT_BLOCK_SIZE,
+          MAX_PADDING_SIZE_DEFAULT,
+          ParquetProperties.DEFAULT_COLUMN_INDEX_TRUNCATE_LENGTH,
+          ParquetProperties.DEFAULT_STATISTICS_TRUNCATE_LENGTH,
+          ParquetProperties.DEFAULT_PAGE_WRITE_CHECKSUM_ENABLED,
+          encryptionProperties);
+      fail("Expected ParquetCryptoRuntimeException for an encrypted column 
absent from the schema");

Review Comment:
   we're migrating the codebase to AssertJ assertions, so you might want to 
change this to `assertThatThrownBy(() -> 
...).isInstanceOf(ParquetCryptoRuntimeException.class).hasMessage(...)`



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