如何测试进行重定向的帮助程序Grok视图(How to test a helper Grok view that makes a redirect)

 我有一个内容类型需要在调用帮助Grok视图后以某种方式进行修改，该视图检查某些条件，进行一些更改，设置消息并重定向到原始对象。 
 
 我的帮助器视图只有一个render方法，我想为它编写一些测试，但我不知道如何处理它。 
 
 我想检查一些条件不满足时的错误消息，以及一切正常时的信息消息。 
 
 我的代码看起来像这样： 
 
class MyHelperView(grok.View):

    grok.context(IMyType)
    grok.layer(IMyLayer)
    grok.name('helper-view')
    grok.require('my.permission')

    def render(self):
        variable = self.request.form.get('variable', None)
        if not variable:
            msg = _(u'Required input is missing.')
            api.portal.show_message(message=msg, request=self.request, type='error')
        else:
            do_something()
            msg = _(u'Information processed.')
            api.portal.show_message(message=msg, request=self.request)
        self.request.response.redirect(self.context.absolute_url())
 
 当我调用视图时，显然我以一个None对象结束，因为视图没有返回任何内容。 我不知道在哪里寻找消息......请求？ 响应？ 任何提示？ 

I have a content type that needs to be modified in some way after calling a helper Grok view that checks some condition, makes some changes, sets a message and redirects to the original object.
 
my helper view only has a render method and I want to write some tests for it but I have no idea how to handle this.
 
I would like to check for an error message when some condition is not met, and for an info message when everything goes fine.
 
my code looks like this:
 
class MyHelperView(grok.View):

    grok.context(IMyType)
    grok.layer(IMyLayer)
    grok.name('helper-view')
    grok.require('my.permission')

    def render(self):
        variable = self.request.form.get('variable', None)
        if not variable:
            msg = _(u'Required input is missing.')
            api.portal.show_message(message=msg, request=self.request, type='error')
        else:
            do_something()
            msg = _(u'Information processed.')
            api.portal.show_message(message=msg, request=self.request)
        self.request.response.redirect(self.context.absolute_url())
 
when I call the view obviously I ended with a None object, as the view returns nothing. I don't know where to look for messages... request? response? any hint?

原文：https://stackoverflow.com/questions/23226093