gaborkaszab commented on code in PR #17329:
URL: https://github.com/apache/iceberg/pull/17329#discussion_r3657301513


##########
api/src/test/java/org/apache/iceberg/encryption/TestEncryptingFileIO.java:
##########
@@ -151,6 +154,39 @@ public void closeClosesEncryptionManagerWhenCloseable() 
throws Exception {
     verify((Closeable) em).close();
   }
 
+  @Test
+  public void closeClosesEncryptionManagerWhenFileIOCloseFails() throws 
Exception {
+    RuntimeException fileIOFailure = new RuntimeException("FileIO close 
failure");
+    EncryptionManager em =
+        mock(EncryptionManager.class, 
withSettings().extraInterfaces(Closeable.class));
+    DelegateFileIO delegate = mock(DelegateFileIO.class);
+    doThrow(fileIOFailure).when(delegate).close();
+
+    EncryptingFileIO fileIO = EncryptingFileIO.combine(delegate, em);
+
+    assertThatThrownBy(fileIO::close).isSameAs(fileIOFailure);

Review Comment:
   Instead of testing it's the same object, I'd rather assert the exception 
type and message.



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