def test_command():
"""
Test command execution
The true and false commands should reliably succeed and fail in most Linux
environments.
"""
cmd = ["true"]
command = Command(cmd)
command.execute()
assert command.success()
# Specifying the command as a string instead of a list.
cmd = "true"
command = Command(cmd)
command.execute()
assert command.success()
cmd = ["false"]
command = Command(cmd)
command.execute()
assert not command.success()
