Raise RuntimeError when try to use with ... not async with... (#67)

asyncpgsa/pgsingleton.py

@@ -115,7 +115,7 @@ def __init__(self, pool, query, args=None,
         self._con = None
 
     def __enter__(self):
-        raise SyntaxError('Must use "async with"')
+        raise RuntimeError('Must use "async with"')
 
     def __exit__(self, exc_type, exc_val, exc_tb):
         pass

asyncpgsa/testing/mockpgsingleton.py

@@ -47,7 +47,7 @@ def __init__(self, connection, query, args=None):
         self.cursor = None
 
     def __enter__(self):
-        raise SyntaxError('Must use "async with"')
+        raise RuntimeError('Must use "async with"')
 
     def __exit__(self, exc_type, exc_val, exc_tb):
         pass

asyncpgsa/testing/mocktransactionmanager.py

@@ -6,7 +6,7 @@ def __init__(self, pool, connection):
         self.connection = connection
 
     def __enter__(self):
-        raise SyntaxError('Must use "async with" for a transaction')
+        raise RuntimeError('Must use "async with" for a transaction')
 
     def __exit__(self, exc_type, exc_val, exc_tb):
         pass

asyncpgsa/transactionmanager.py

@@ -22,7 +22,7 @@ def __init__(self, pool, timeout=None, **kwargs):
         self.trans_kwargs = kwargs
 
     def __enter__(self):
-        raise SyntaxError('Must use "async with" for a transaction')
+        raise RuntimeError('Must use "async with" for a transaction')
 
     def __exit__(self, exc_type, exc_val, exc_tb):
         pass

tests/test_pgsingleton.py

@@ -45,7 +45,7 @@ async def test_pg_query_async_with_statement():
 async def test_pg_query_with_bad_with_statement():
     ps = pg.query(query)
 
-    with pytest.raises(SyntaxError) as exc_info:
+    with pytest.raises(RuntimeError) as exc_info:
         with ps as cursor:
             async for row in cursor:
                 assert row['a'] == 4.0

tests/test_pool.py

@@ -79,8 +79,8 @@ async def test_with_without_async_should_throw_exception(pool):
         with pool.transaction() as conn:
             result = await conn.fetch('SELECT * FROM sqrt(16)')
 
-        raise Exception('Should have thrown SyntaxError')
-    except SyntaxError as e:
+        raise Exception('Should have thrown RuntimeError')
+    except RuntimeError as e:
         assert str(e) == 'Must use "async with" for a transaction'
 
 async def test_falsyness_of_rows_on_fetch(pool):