import json from unittest import mock from django import test from django.core.exceptions import ImproperlyConfigured from django.http import HttpResponse from django.utils.encoding import force_str from braces.views import AjaxResponseMixin from .factories import ArticleFactory, UserFactory from .helpers import TestViewHelper from .views import SimpleJsonView, JsonRequestResponseView, JsonBadRequestView class TestAjaxResponseMixin(TestViewHelper, test.TestCase): """ Tests for AjaxResponseMixin. """ methods = ["get", "post", "put", "delete"] def test_xhr(self): """ Checks if ajax_* method has been called for every http method. """ # AjaxResponseView returns 'AJAX_OK' when requested with XmlHttpRequest for m in self.methods: fn = getattr(self.client, m) resp = fn( "/ajax_response/", HTTP_X_REQUESTED_WITH="XMLHttpRequest" ) assert force_str(resp.content) == "AJAX_OK" def test_not_xhr(self): """ Normal methods (get, post, etc) should be used when handling non-ajax requests. """ for m in self.methods: fn = getattr(self.client, m) resp = fn("/ajax_response/") assert force_str(resp.content) == "OK" def test_fallback_to_normal_methods(self): """ Ajax methods should fallback to normal methods by default. """ test_cases = [ ("get", "get"), ("post", "post"), ("put", "get"), ("delete", "get"), ] for ajax_method, fallback in test_cases: m, mixin = mock.Mock(), AjaxResponseMixin() m.return_value = HttpResponse() req = self.build_request() setattr(mixin, fallback, m) fn = getattr(mixin, "{0}_ajax".format(ajax_method)) ret = fn(req, 1, 2, meth=ajax_method) # check if appropriate method has been called m.assert_called_once_with(req, 1, 2, meth=ajax_method) # check if appropriate value has been returned self.assertIs(m.return_value, ret) class TestJSONResponseMixin(TestViewHelper, test.TestCase): """ Tests for JSONResponseMixin. """ view_class = SimpleJsonView def assert_json_response(self, resp, status_code=200): self.assertEqual(status_code, resp.status_code) self.assertEqual( "application/json", resp["content-type"].split(";")[0] ) def get_content(self, url): """ GET url and return content """ resp = self.client.get(url) self.assert_json_response(resp) content = force_str(resp.content) return content def test_simple_json(self): """ Tests render_json_response() method. """ user = UserFactory() self.client.login(username=user.username, password="asdf1234") data = json.loads(self.get_content("/simple_json/")) self.assertEqual({"username": user.username}, data) def test_serialization(self): """ Tests render_json_object_response() method which serializes objects using django's serializer framework. """ a1, a2 = [ArticleFactory() for __ in range(2)] data = json.loads(self.get_content("/article_list_json/")) self.assertIsInstance(data, list) self.assertEqual(2, len(data)) titles = [] for row in data: # only title has been serialized self.assertEqual(1, len(row["fields"])) titles.append(row["fields"]["title"]) self.assertIn(a1.title, titles) self.assertIn(a2.title, titles) def test_bad_content_type(self): """ ImproperlyConfigured exception should be raised if content_type attribute is not set correctly. """ with self.assertRaises(ImproperlyConfigured): self.dispatch_view(self.build_request(), content_type=["a"]) def test_pretty_json(self): """ Success if JSON responses are the same, and the well-indented response is longer than the normal one. """ user = UserFactory() self.client.login(username=user.username, password="asfa") normal_content = self.get_content("/simple_json/") self.view_class.json_dumps_kwargs = {"indent": 2} pretty_content = self.get_content("/simple_json/") normal_json = json.loads("{0}".format(normal_content)) pretty_json = json.loads("{0}".format(pretty_content)) self.assertEqual(normal_json, pretty_json) self.assertTrue(len(pretty_content) > len(normal_content)) def test_json_encoder_class_atrribute(self): """ Tests setting custom `json_encoder_class` attribute. """ data = json.loads(self.get_content("/simple_json_custom_encoder/")) self.assertEqual({"numbers": [1, 2, 3]}, data) class TestJsonRequestResponseMixin(TestViewHelper, test.TestCase): view_class = JsonRequestResponseView request_dict = {"status": "operational"} def test_get_request_json_properly_formatted(self): """ Properly formatted JSON requests should result in a JSON object """ data = json.dumps(self.request_dict).encode("utf-8") response = self.client.post( "/json_request/", content_type="application/json", data=data ) response_json = json.loads(response.content.decode("utf-8")) self.assertEqual(response.status_code, 200) self.assertEqual(response_json, self.request_dict) def test_get_request_json_improperly_formatted(self): """ Improperly formatted JSON requests should make request_json == None """ response = self.client.post("/json_request/", data=self.request_dict) response_json = json.loads(response.content.decode("utf-8")) self.assertEqual(response.status_code, 200) self.assertEqual(response_json, None) def test_bad_request_response_with_custom_error_message(self): """ If a view calls render_bad_request_response when request_json is empty or None, the client should get a 400 error """ response = self.client.post( "/json_custom_bad_request/", data=self.request_dict ) response_json = json.loads(response.content.decode("utf-8")) self.assertEqual(response.status_code, 400) self.assertEqual(response_json, {"error": "you messed up"}) class TestJsonBadRequestMixin(TestViewHelper, test.TestCase): view_class = JsonBadRequestView request_dict = {"status": "operational"} def test_bad_request_response(self): """ If a view calls render_bad_request_response when request_json is empty or None, the client should get a 400 error """ response = self.client.post( "/json_bad_request/", data=self.request_dict ) response_json = json.loads(response.content.decode("utf-8")) self.assertEqual(response.status_code, 400) self.assertEqual(response_json, self.view_class.error_response_dict) def test_options_request_with_required_json_should_pass(self): """ If a the client sends an OPTIONS request, even if require_json is set to true the client should get not a 400 error, because: * it's not possible to send HTTP body within an OPTIONS request * it's not up to an OPTIONS request to decide if the payload is valid """ response = self.client.options("/json_bad_request/", data=None) self.assertEqual(response.status_code, 200)