add test

tests/contrib/django/test_django.py

@@ -30,6 +30,7 @@
 from ddtrace.ext import http
 from ddtrace.ext import user
 from ddtrace.internal.compat import ensure_text
+from ddtrace.internal.schema import schematize_service_name
 from ddtrace.propagation._utils import get_wsgi_header
 from ddtrace.propagation.http import HTTP_HEADER_PARENT_ID
 from ddtrace.propagation.http import HTTP_HEADER_SAMPLING_PRIORITY
@@ -769,6 +770,25 @@ def test_cache_get(test_spans):
     assert_dict_issuperset(span.get_tags(), expected_meta)
 
 
+def test_cache_service_schematization(test_spans):
+    from ddtrace import config
+
+    cache = django.core.cache.caches["default"]
+
+    env = os.environ.copy()
+
+    env["DD_SERVICE"] = "custom-service-name"
+
+    cache.set("test_key", "test_value")
+    expected_service_name = schematize_service_name(config.django.cache_service_name)
+
+    spans = test_spans.get_spans()
+    assert spans
+
+    span = spans[0]
+    assert span.service == expected_service_name
+
+
 def test_cache_get_rowcount_existing_key(test_spans):
     # get the default cache
     cache = django.core.cache.caches["default"]