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#
# coding=utf-8
import cmd2_ext_test
import pytest
from cmd2 import (
CommandResult,
cmd2,
)
######
#
# define a class which implements a simple cmd2 application
#
######
OUT_MSG = 'this is the something command'
class ExampleApp(cmd2.Cmd):
"""An class to show how to use a plugin"""
def __init__(self, *args, **kwargs):
# gotta have this or neither the plugin or cmd2 will initialize
super().__init__(*args, **kwargs)
def do_something(self, _):
self.last_result = 5
self.poutput(OUT_MSG)
# Define a tester class that brings in the external test mixin
class ExampleTester(cmd2_ext_test.ExternalTestMixin, ExampleApp):
def __init__(self, *args, **kwargs):
# gotta have this or neither the plugin or cmd2 will initialize
super().__init__(*args, **kwargs)
#
# You can't use a fixture to instantiate your app if you want to use
# to use the capsys fixture to capture the output. cmd2.Cmd sets
# internal variables to sys.stdout and sys.stderr on initialization
# and then uses those internal variables instead of sys.stdout. It does
# this so you can redirect output from within the app. The capsys fixture
# can't capture the output properly in this scenario.
#
# If you have extensive initialization needs, create a function
# to initialize your cmd2 application.
@pytest.fixture
def example_app():
app = ExampleTester()
app.fixture_setup()
yield app
app.fixture_teardown()
#####
#
# unit tests
#
#####
def test_something(example_app):
# load our fixture
# execute a command
out = example_app.app_cmd("something")
# validate the command output and result data
assert isinstance(out, CommandResult)
assert str(out.stdout).strip() == OUT_MSG
assert out.data == 5
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