我使用Click和Python编写了一个小命令行应用程序,我现在正在尝试编写测试(主要是为了学习如何测试点击应用程序,以便我可以继续测试我的那个实际开发)。
这是我正在尝试测试的功能:
@click.group()
def main():
pass
@main.command()
@click.option('--folder', '-f', prompt="What do you want to name the folder? (No spaces please)")
def create_folder(folder):
while True:
if " " in folder:
click.echo("Please enter a name with no spaces.")
folder = click.prompt("What do you want to name the folder?", type=str)
if folder in os.listdir():
click.echo("This folder already exists.")
folder = click.prompt("Please choose a different name for the folder")
else:
break
os.mkdir(folder)
click.echo("Your folder has been created!")
我正在尝试使用Click(http://click.pocoo.org/6/testing/和http://click.pocoo.org/6/api/#testing的内置测试以获取更多详细信息)以及pytest进行测试。这适用于我测试可接受的文件夹名称(即没有空格但尚未存在的文件夹名称)的情况。见下文:
import clicky # the module we're testing
import os
from click.testing import CliRunner
import click
import pytest
input sys
runner = CliRunner()
folder = "myfolder"
folder_not = "my folder"
question_create = "What do you want to name the folder? (No spaces please): "
echoed = "\nYour folder has been created!\n"
def test_create_folder():
with runner.isolated_filesystem():
result = runner.invoke(clicky.create_folder, input=folder)
assert folder in os.listdir()
assert result.output == question_create + folder + echoed
我现在想要在我提供不允许的文件夹名称的情况下测试此函数,例如带空格的文件夹名称,然后在提示告诉我我没有空格后,我将提供可接受的文件夹名称。但是,我无法弄清楚如何使click.runner
接受多个输入值,这是我能想到的唯一方法。我也愿意使用unittest模拟,但是我不确定如何将它集成到Click做测试的方式,除了这个问题到目前为止这个问题已经非常好了。这是我多次输入的尝试:
def test_create_folder_not():
with runner.isolated_filesystem():
result = runner.invoke(clicky.create_folder, input=[folder_not, folder]) # here i try to provide more than one input
assert result.output == question_create + folder_not + "\nPlease enter a name with no spaces.\n" + "What do you want to name the folder?: " + folder + echoed
我尝试通过将它们放入列表中来提供多个输入,就像我在模拟中看到的那样,但是我收到了这个错误:
'list' object has no attribute 'encode'
对此的任何想法都将非常感谢!
答案 0 :(得分:1)
要为测试运行器提供多个输入,您只需join()
输入\n
,就像这样:
result = runner.invoke(clicky.create_folder,
input='\n'.join([folder_not, folder]))
============================= test session starts =============================
platform win32 -- Python 3.6.3, pytest-3.3.2, py-1.5.2, pluggy-0.6.0
rootdir: \src\testcode, inifile:
collected 2 items
testit.py .. [100%]
========================== 2 passed in 0.53 seconds ===========================
click.ParamType
但是我会建议,为了提示所需的文件名属性,您可以使用ParamType
。单击提供可以进行子类化的ParamType
,然后传递给click.option()
。然后可以通过单击来处理格式检查和重新提示。
您可以将ParamType子类化为:
import click
class NoSpacesFolder(click.types.StringParamType):
def convert(self, value, param, ctx):
folder = super(NoSpacesFolder, self).convert(value, param, ctx)
if ' ' in folder:
raise self.fail("No spaces allowed in selection '%s'." %
value, param, ctx)
if folder in os.listdir():
raise self.fail("This folder already exists.\n"
"Please choose another name.", param, ctx)
return folder
要使用自定义ParamType,请将其传递给click.option()
,如:
@main.command()
@click.option(
'--folder', '-f', type=NoSpacesFolder(),
prompt="What do you want to name the folder? (No spaces please)")
def create_folder(folder):
os.mkdir(folder)
click.echo("Your folder has been created!")