1 files changed, 60 insertions, 0 deletions
diff --git a/tests/test_channelfile.py b/tests/test_channelfile.py
new file mode 100644
index 0000000..e2b6306
--- /dev/null
+++ b/tests/test_channelfile.py
@@ -0,0 +1,60 @@
+from unittest.mock import patch, MagicMock
+
+from paramiko import Channel, ChannelFile, ChannelStderrFile, ChannelStdinFile
+
+
+class ChannelFileBase:
+    @patch("paramiko.channel.ChannelFile._set_mode")
+    def test_defaults_to_unbuffered_reading(self, setmode):
+        self.klass(Channel(None))
+        setmode.assert_called_once_with("r", -1)
+
+    @patch("paramiko.channel.ChannelFile._set_mode")
+    def test_can_override_mode_and_bufsize(self, setmode):
+        self.klass(Channel(None), mode="w", bufsize=25)
+        setmode.assert_called_once_with("w", 25)
+
+    def test_read_recvs_from_channel(self):
+        chan = MagicMock()
+        cf = self.klass(chan)
+        cf.read(100)
+        chan.recv.assert_called_once_with(100)
+
+    def test_write_calls_channel_sendall(self):
+        chan = MagicMock()
+        cf = self.klass(chan, mode="w")
+        cf.write("ohai")
+        chan.sendall.assert_called_once_with(b"ohai")
+
+
+class TestChannelFile(ChannelFileBase):
+    klass = ChannelFile
+
+
+class TestChannelStderrFile:
+    def test_read_calls_channel_recv_stderr(self):
+        chan = MagicMock()
+        cf = ChannelStderrFile(chan)
+        cf.read(100)
+        chan.recv_stderr.assert_called_once_with(100)
+
+    def test_write_calls_channel_sendall(self):
+        chan = MagicMock()
+        cf = ChannelStderrFile(chan, mode="w")
+        cf.write("ohai")
+        chan.sendall_stderr.assert_called_once_with(b"ohai")
+
+
+class TestChannelStdinFile(ChannelFileBase):
+    klass = ChannelStdinFile
+
+    def test_close_calls_channel_shutdown_write(self):
+        chan = MagicMock()
+        cf = ChannelStdinFile(chan, mode="wb")
+        cf.flush = MagicMock()
+        cf.close()
+        # Sanity check that we still call BufferedFile.close()
+        cf.flush.assert_called_once_with()
+        assert cf._closed is True
+        # Actual point of test
+        chan.shutdown_write.assert_called_once_with()