nastra commented on code in PR #10082:
URL: https://github.com/apache/iceberg/pull/10082#discussion_r1553049382


##########
core/src/test/java/org/apache/iceberg/jdbc/TestJdbcCatalog.java:
##########
@@ -970,6 +976,51 @@ public void testCatalogWithCustomMetricsReporter() throws 
IOException {
     Assertions.assertThat(CustomMetricsReporter.COUNTER.get()).isEqualTo(2);
   }
 
+  @Test
+  public void testCommitExceptionWithoutMessage() {
+    TableIdentifier tableIdent = TableIdentifier.of("db", "ns1", "ns2", "tbl");
+    BaseTable table = (BaseTable) catalog.buildTable(tableIdent, 
SCHEMA).create();
+    JdbcTableOperations ops = (JdbcTableOperations) table.operations();
+    TableMetadata metadataV1 = ops.current();
+
+    table.updateSchema().addColumn("n", Types.IntegerType.get()).commit();
+    ops.refresh();
+
+    JdbcTableOperations spyOps = spy(ops);
+
+    try (MockedStatic<JdbcUtil> mockedStatic = 
Mockito.mockStatic(JdbcUtil.class)) {
+      mockedStatic
+          .when(() -> JdbcUtil.loadTable(any(), any(), any(), any()))
+          .thenThrow(new SQLException());
+      assertThatThrownBy(() -> spyOps.commit(ops.current(), metadataV1))
+          .isInstanceOf(UncheckedSQLException.class)
+          .hasMessageStartingWith("Unknown failure");
+    }
+  }
+
+  @Test
+  public void testCommitExceptionWithMessage() {
+    TableIdentifier tableIdent = TableIdentifier.of("db", "ns1", "ns2", "tbl");
+    BaseTable table = (BaseTable) catalog.buildTable(tableIdent, 
SCHEMA).create();
+    JdbcTableOperations ops = (JdbcTableOperations) table.operations();
+
+    TableMetadata metadataV1 = ops.current();
+
+    table.updateSchema().addColumn("n", Types.IntegerType.get()).commit();
+    ops.refresh();
+
+    JdbcTableOperations spyOps = spy(ops);
+
+    try (MockedStatic<JdbcUtil> mockedStatic = 
Mockito.mockStatic(JdbcUtil.class)) {
+      mockedStatic
+          .when(() -> JdbcUtil.loadTable(any(), any(), any(), any()))
+          .thenThrow(new SQLException("constraint failed"));

Review Comment:
   shouldn't this have a null message?



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