Rename to UniqueViolationException

Author: isoos

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 ## 3.5.3
 
-- New typed exceptions: `DuplicateKeyException`, `ForeignKeyViolationException`. [#416](https://github.com/isoos/postgresql-dart/pull/416) by [hurrba](https://github.com/hurrba)
+- New typed exceptions: `UniqueViolationException`, `ForeignKeyViolationException`. [#416](https://github.com/isoos/postgresql-dart/pull/416) by [hurrba](https://github.com/hurrba)
 
 ## 3.5.2
 

lib/postgres.dart

@@ -20,7 +20,7 @@ export 'src/exceptions.dart'
         Severity,
         PgException,
         ServerException,
-        DuplicateKeyException,
+        UniqueViolationException,
         ForeignKeyViolationException;
 export 'src/pool/pool_api.dart';
 export 'src/replication.dart';

lib/src/exceptions.dart

@@ -191,8 +191,9 @@ ServerException buildExceptionFromErrorFields(List<ErrorField> errorFields) {
 }
 
 PgException transformServerException(ServerException ex) {
+  // TODO: consider adding more exception from https://www.postgresql.org/docs/current/errcodes-appendix.html
   return switch (ex.code) {
-    '23505' => DuplicateKeyException(ex.message, severity: ex.severity),
+    '23505' => UniqueViolationException(ex.message, severity: ex.severity),
     '23503' => ForeignKeyViolationException(ex.message, severity: ex.severity),
     '57014' => _PgQueryCancelledException(
         ['${ex.code}:', ex.message, ex.trace].whereType<String>().join(' '),
@@ -213,8 +214,8 @@ class _PgQueryCancelledException extends PgException
   });
 }
 
-class DuplicateKeyException extends PgException {
-  DuplicateKeyException(
+class UniqueViolationException extends PgException {
+  UniqueViolationException(
     super.message, {
     required super.severity,
   });

test/error_handling_test.dart

@@ -77,7 +77,7 @@ void main() {
       try {
         await c.execute('INSERT INTO test (id) VALUES (1);');
       } catch (e) {
-        expect(e, isA<DuplicateKeyException>());
+        expect(e, isA<UniqueViolationException>());
         expect(
             e.toString(),
             contains(

test/transaction_test.dart

@@ -700,7 +700,7 @@ void main() {
             // ignore
           }
         }),
-        throwsA(isA<DuplicateKeyException>()),
+        throwsA(isA<UniqueViolationException>()),
       );
     });
   });