Add "optionals not required" build (#6047)

.travis.yml

@@ -22,6 +22,7 @@ matrix:
       - { python: "3.6", env: DJANGO=1.11 }
       - { python: "3.6", env: DJANGO=2.0 }
       - { python: "3.6", env: DJANGO=2.1 }
+      - { python: "3.6", env: TOXENV=base }
       - { python: "2.7", env: TOXENV=lint }
       - { python: "2.7", env: TOXENV=docs }
 

tests/test_encoders.py

@@ -76,6 +76,7 @@ class JSONEncoderTests(TestCase):
         unique_id = uuid4()
         assert self.encoder.default(unique_id) == str(unique_id)
 
+    @pytest.mark.skipif(not coreapi, reason='coreapi is not installed')
     def test_encode_coreapi_raises_error(self):
         """
         Tests encoding a coreapi objects raises proper error

tests/test_filters.py

@@ -10,6 +10,7 @@ from django.test.utils import override_settings
 from django.utils.six.moves import reload_module
 
 from rest_framework import filters, generics, serializers
+from rest_framework.compat import coreschema
 from rest_framework.test import APIRequestFactory
 
 factory = APIRequestFactory()
@@ -28,6 +29,7 @@ class BaseFilterTests(TestCase):
         with pytest.raises(NotImplementedError):
             self.filter_backend.filter_queryset(None, None, None)
 
+    @pytest.mark.skipif(not coreschema, reason='coreschema is not installed')
     def test_get_schema_fields_checks_for_coreapi(self):
         filters.coreapi = None
         with pytest.raises(AssertionError):

tests/test_renderers.py

@@ -709,6 +709,7 @@ class AdminRendererTests(TestCase):
         self.assertContains(response, '<tr><th>Iteritems</th><td>a string</td></tr>', html=True)
 
 
+@pytest.mark.skipif(not coreapi, reason='coreapi is not installed')
 class TestDocumentationRenderer(TestCase):
 
     def test_document_with_link_named_data(self):
@@ -738,6 +739,7 @@ class TestDocumentationRenderer(TestCase):
         assert '<h1>Data Endpoint API</h1>' in html
 
 
+@pytest.mark.skipif(not coreapi, reason='coreapi is not installed')
 class TestSchemaJSRenderer(TestCase):
 
     def test_schemajs_output(self):

tests/test_schemas.py

@@ -663,6 +663,7 @@ class TestAutoSchema(TestCase):
         with pytest.raises(AssertionError):
             descriptor.get_link(None, None, None)  # ???: Do the dummy arguments require a tighter assert?
 
+    @pytest.mark.skipif(not coreapi, reason='coreapi is not installed')
     def test_update_fields(self):
         """
         That updating fields by-name helper is correct
@@ -698,6 +699,7 @@ class TestAutoSchema(TestCase):
         assert len(fields) == 1
         assert fields[0].required is False
 
+    @pytest.mark.skipif(not coreapi, reason='coreapi is not installed')
     def test_get_manual_fields(self):
         """That get_manual_fields is applied during get_link"""
 
@@ -718,6 +720,7 @@ class TestAutoSchema(TestCase):
         assert len(fields) == 2
         assert "my_extra_field" in [f.name for f in fields]
 
+    @pytest.mark.skipif(not coreapi, reason='coreapi is not installed')
     def test_view_with_manual_schema(self):
 
         path = '/example'
@@ -764,6 +767,7 @@ class TestAutoSchema(TestCase):
         link = view.schema.get_link(path, method, base_url)
         assert link == expected
 
+    @unittest.skipUnless(coreschema, 'coreschema is not installed')
     def test_field_to_schema(self):
         label = 'Test label'
         help_text = 'This is a helpful test text'
@@ -983,6 +987,7 @@ naming_collisions_router = SimpleRouter()
 naming_collisions_router.register(r'collision', NamingCollisionViewSet, base_name="collision")
 
 
+@pytest.mark.skipif(not coreapi, reason='coreapi is not installed')
 class TestURLNamingCollisions(TestCase):
     """
     Ref: https://github.com/encode/django-rest-framework/issues/4704
@@ -1167,6 +1172,7 @@ def test_head_and_options_methods_are_excluded():
     assert inspector.get_allowed_methods(callback) == ["GET"]
 
 
+@pytest.mark.skipif(not coreapi, reason='coreapi is not installed')
 class TestAutoSchemaAllowsFilters(object):
     class MockAPIView(APIView):
         filter_backends = [filters.OrderingFilter]

tests/urls.py

@@ -5,8 +5,12 @@ We need only the docs urls for DocumentationRenderer tests.
 """
 from django.conf.urls import url
 
+from rest_framework.compat import coreapi
 from rest_framework.documentation import include_docs_urls
 
-urlpatterns = [
+if coreapi:
+    urlpatterns = [
         url(r'^docs/', include_docs_urls(title='Test Suite API')),
-]
+    ]
+else:
+    urlpatterns = []

tox.ini

@@ -5,7 +5,7 @@ envlist =
        {py34,py35,py36}-django20,
        {py35,py36}-django21
        {py35,py36}-djangomaster,
-       dist,lint,docs,
+       base,dist,lint,docs,
 
 [travis:env]
 DJANGO =
@@ -30,6 +30,12 @@ deps =
         -rrequirements/requirements-testing.txt
         -rrequirements/requirements-optionals.txt
 
+[testenv:base]
+; Ensure optional dependencies are not required
+deps =
+        django
+        -rrequirements/requirements-testing.txt
+
 [testenv:dist]
 commands = ./runtests.py --fast {posargs} --no-pkgroot --staticfiles -rw
 deps =