# Source code for cherrypy.test.test_params

    import sys
    import textwrap

    import cherrypy
    from cherrypy.test import helper

    class ParamsTest(helper.CPWebCase):

        @staticmethod
        def setup_server():
            class Root:
                @cherrypy.expose
                @cherrypy.tools.json_out()
                @cherrypy.tools.params()
                def resource(self, limit=None, sort=None):
                    return type(limit).__name__
                # for testing on Py 2
                resource.__annotations__ = {'limit': int}
            conf = {'/': {'tools.params.on': True}}
            cherrypy.tree.mount(Root(), config=conf)

        def test_pass(self):
            self.getPage('/resource')
            self.assertStatus(200)
            self.assertBody('"NoneType"')

            self.getPage('/resource?limit=0')
            self.assertStatus(200)
            self.assertBody('"int"')

        def test_error(self):
            self.getPage('/resource?limit=')
            self.assertStatus(400)
            self.assertInBody('invalid literal for int')

            cherrypy.config['tools.params.error'] = 422
            self.getPage('/resource?limit=')
            self.assertStatus(422)
            self.assertInBody('invalid literal for int')

            cherrypy.config['tools.params.exception'] = TypeError
            self.getPage('/resource?limit=')
            self.assertStatus(500)

        def test_syntax(self):
            if sys.version_info < (3,):
                return self.skip('skipped (Python 3 only)')
            code = textwrap.dedent("""
                class Root:
                    @cherrypy.expose
                    @cherrypy.tools.params()
                    def resource(self, limit: int):
                        return type(limit).__name__
                conf = {'/': {'tools.params.on': True}}
                cherrypy.tree.mount(Root(), config=conf)
                """)
            exec(code)

            self.getPage('/resource?limit=0')
            self.assertStatus(200)
            self.assertBody('int')