Add 'shell' command to cli (#738)

* Add 'shell' command to cli

* Add test

* Add ptpython as optional dep

kasa/cli.py

@@ -1081,5 +1081,26 @@ async def update_credentials(dev, username, password):
     return await dev.update_credentials(username, password)
 
 
+@cli.command()
+@pass_dev
+async def shell(dev: Device):
+    """Open interactive shell."""
+    echo("Opening shell for %s" % dev)
+    from ptpython.repl import embed
+
+    logging.getLogger("parso").setLevel(logging.WARNING)  # prompt parsing
+    logging.getLogger("asyncio").setLevel(logging.WARNING)
+    loop = asyncio.get_event_loop()
+    try:
+        await embed(
+            globals=globals(),
+            locals=locals(),
+            return_asyncio_coroutine=True,
+            patch_stdout=True,
+        )
+    except EOFError:
+        loop.stop()
+
+
 if __name__ == "__main__":
     cli()

kasa/tests/test_cli.py

@@ -558,3 +558,21 @@ async def test_type_param(device_type, mocker):
     )
     assert res.exit_code == 0
     assert isinstance(result_device, expected_type)
+
+
+@pytest.mark.skip(
+    "Skip until pytest-asyncio supports pytest 8.0, https://github.com/pytest-dev/pytest-asyncio/issues/737"
+)
+async def test_shell(dev: Device, mocker):
+    """Test that the shell commands tries to embed a shell."""
+    mocker.patch("kasa.Discover.discover", return_value=[dev])
+    # repl = mocker.patch("ptpython.repl")
+    mocker.patch.dict(
+        "sys.modules",
+        {"ptpython": mocker.MagicMock(), "ptpython.repl": mocker.MagicMock()},
+    )
+    embed = mocker.patch("ptpython.repl.embed")
+    runner = CliRunner()
+    res = await runner.invoke(cli, ["shell"], obj=dev)
+    assert res.exit_code == 0
+    embed.assert_called()