Add tests

tests/utils/test_logging_mixin.py

@@ -131,11 +131,13 @@ def test_write(self):
         log = StreamLogWriter(logger, 1)
 
         msg = "test_message"
-        log.write(msg)
+        length = log.write(msg)
 
+        assert length == len(msg)
         assert log._buffer == msg
 
-        log.write(" \n")
+        length = log.write(" \n")
+        assert length == 0
         logger.log.assert_called_once_with(1, msg)
 
         assert log._buffer == ""
@@ -168,7 +170,7 @@ def test_encoding(self):
         logger.log = mock.MagicMock()
 
         log = StreamLogWriter(logger, 1)
-        assert log.encoding is None
+        assert log.encoding == "None"
 
     def test_iobase_compatibility(self):
         log = StreamLogWriter(None, 1)
@@ -177,6 +179,13 @@ def test_iobase_compatibility(self):
         # has no specific effect
         log.close()
 
+    def test_textio_compatibility(self):
+        log = StreamLogWriter(None, 1)
+
+        # Make sure some common operations don't fail
+        assert "b" not in log.mode
+        assert log.name.partition(".")[0] == "<logger>"
+
 
 @pytest.mark.parametrize(["maintain_propagate"], [[SetContextPropagate.MAINTAIN_PROPAGATE], [None]])
 def test_set_context_propagation(parent_child_handlers, child_logger, maintain_propagate):