Browsable API tests asserts to pytest (#4725)

tests/browsable_api/test_browsable_api.py

@@ -26,16 +26,19 @@ class DropdownWithAuthTests(TestCase):
     def test_name_shown_when_logged_in(self):
         self.client.login(username=self.username, password=self.password)
         response = self.client.get('/')
-        self.assertContains(response, 'john')
+        content = response.content.decode('utf8')
+        assert 'john' in content
 
     def test_logout_shown_when_logged_in(self):
         self.client.login(username=self.username, password=self.password)
         response = self.client.get('/')
-        self.assertContains(response, '>Log out<')
+        content = response.content.decode('utf8')
+        assert '>Log out<' in content
 
     def test_login_shown_when_logged_out(self):
         response = self.client.get('/')
-        self.assertContains(response, '>Log in<')
+        content = response.content.decode('utf8')
+        assert '>Log in<' in content
 
 
 @override_settings(ROOT_URLCONF='tests.browsable_api.no_auth_urls')
@@ -58,13 +61,16 @@ class NoDropdownWithoutAuthTests(TestCase):
     def test_name_shown_when_logged_in(self):
         self.client.login(username=self.username, password=self.password)
         response = self.client.get('/')
-        self.assertContains(response, 'john')
+        content = response.content.decode('utf8')
+        assert 'john' in content
 
     def test_dropdown_not_shown_when_logged_in(self):
         self.client.login(username=self.username, password=self.password)
         response = self.client.get('/')
-        self.assertNotContains(response, '<li class="dropdown">')
+        content = response.content.decode('utf8')
+        assert '<li class="dropdown">' not in content
 
     def test_dropdown_not_shown_when_logged_out(self):
         response = self.client.get('/')
-        self.assertNotContains(response, '<li class="dropdown">')
+        content = response.content.decode('utf8')
+        assert '<li class="dropdown">' not in content

tests/browsable_api/test_browsable_nested_api.py

@@ -35,8 +35,8 @@ class DropdownWithAuthTests(TestCase):
     @override_settings(ROOT_URLCONF='tests.browsable_api.test_browsable_nested_api')
     def test_login(self):
         response = self.client.get('/api/')
-        self.assertEqual(200, response.status_code)
+        assert 200 == response.status_code
         content = response.content.decode('utf-8')
-        self.assertIn('form action="/api/"', content)
-        self.assertIn('input name="nested.one"', content)
-        self.assertIn('input name="nested.two"', content)
+        assert 'form action="/api/"' in content
+        assert 'input name="nested.one"' in content
+        assert 'input name="nested.two"' in content

tests/browsable_api/test_form_rendering.py

@@ -50,5 +50,5 @@ class TestManyPostView(TestCase):
         request = factory.post('/', data, format='json')
         with self.assertNumQueries(1):
             response = self.view(request).render()
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertEqual(len(response.data), 3)
+        assert response.status_code == status.HTTP_200_OK
+        assert len(response.data) == 3