Add (some) tests to the cli tool (#22)

* Add tests to the cli tool

* add pytest-mock

* do not ignore cli.py for coverage

* read requirements_test.txt instead of redefining reqs in tox.ini

* Add upload to codecov, first try!

* fix name of the result file

* no need to manually publish to azure devops..

kasa/tests/test_cli.py

@@ -0,0 +1,119 @@
+import asyncio
+
+from click.testing import CliRunner
+
+from kasa import SmartDevice
+from kasa.cli import alias, brightness, emeter, raw_command, state, sysinfo
+
+from .conftest import handle_turn_on, turn_on
+
+
+def test_sysinfo(dev):
+    runner = CliRunner()
+    res = runner.invoke(sysinfo, obj=dev)
+    assert "System info" in res.output
+    assert dev.alias in res.output
+
+
+@turn_on
+def test_state(dev, turn_on):
+    asyncio.run(handle_turn_on(dev, turn_on))
+    runner = CliRunner()
+    res = runner.invoke(state, obj=dev)
+    print(res.output)
+
+    if dev.is_on:
+        assert "Device state: ON" in res.output
+    else:
+        assert "Device state: OFF" in res.output
+
+    if not dev.has_emeter:
+        assert "Device has no emeter" in res.output
+
+
+def test_alias(dev):
+    runner = CliRunner()
+
+    res = runner.invoke(alias, obj=dev)
+    assert f"Alias: {dev.alias}" in res.output
+
+    new_alias = "new alias"
+    res = runner.invoke(alias, [new_alias], obj=dev)
+    assert f"Setting alias to {new_alias}" in res.output
+
+    res = runner.invoke(alias, obj=dev)
+    assert f"Alias: {new_alias}" in res.output
+
+
+def test_raw_command(dev):
+    runner = CliRunner()
+    res = runner.invoke(raw_command, ["system", "get_sysinfo"], obj=dev)
+
+    assert res.exit_code == 0
+    assert dev.alias in res.output
+
+    res = runner.invoke(raw_command, obj=dev)
+    assert res.exit_code != 0
+    assert "Usage" in res.output
+
+
+def test_emeter(dev: SmartDevice, mocker):
+    runner = CliRunner()
+
+    res = runner.invoke(emeter, obj=dev)
+    if not dev.has_emeter:
+        assert "Device has no emeter" in res.output
+        return
+
+    assert "Current State" in res.output
+
+    monthly = mocker.patch.object(dev, "get_emeter_monthly")
+    res = runner.invoke(emeter, ["--year", "1900"], obj=dev)
+    assert "For year" in res.output
+    monthly.assert_called()
+
+    daily = mocker.patch.object(dev, "get_emeter_daily")
+    res = runner.invoke(emeter, ["--month", "1900-12"], obj=dev)
+    assert "For month" in res.output
+    daily.assert_called()
+
+
+def test_brightness(dev):
+    runner = CliRunner()
+    res = runner.invoke(brightness, obj=dev)
+    if not dev.is_dimmable:
+        assert "This device does not support brightness." in res.output
+        return
+
+    res = runner.invoke(brightness, obj=dev)
+    assert f"Brightness: {dev.brightness}" in res.output
+
+    res = runner.invoke(brightness, ["12"], obj=dev)
+    assert "Setting brightness" in res.output
+
+    res = runner.invoke(brightness, obj=dev)
+    assert f"Brightness: 12" in res.output
+
+
+def test_temperature(dev):
+    pass
+
+
+def test_hsv(dev):
+    pass
+
+
+def test_led(dev):
+    pass
+
+
+def test_on(dev):
+    pass
+
+
+def test_off(dev):
+    pass
+
+
+def test_reboot(dev):
+    pass