Fix nodeps tests

django_cache_mock/backends/redis.py

@@ -7,7 +7,6 @@
 
 logger = logging.getLogger(__name__)
 
-
 try:
     from django.core.cache.backends.redis import RedisCache, RedisCacheClient
 
@@ -82,18 +81,25 @@ class BaseDjangoRedisRedisCache(LazyLibImportError):
         parent_exception = _import_error
 
 
-class RedisLiteMixin:
-    def __init__(self, server, params):
-        import redislite
+try:
+    import redislite
+
+    class RedisLiteMixin:
+        def __init__(self, server, params):
+            self.library = redislite
+            self.client_class = redislite.StrictRedis
+            self.dbfilename = server or "redislite.db"
+            super().__init__(server, params)
+
+        @property
+        def redis_client_cls_kwargs(self):
+            return {"dbfilename": self.dbfilename}
 
-        self.library = redislite
-        self.client_class = redislite.StrictRedis
-        self.dbfilename = server or "redislite.db"
-        super().__init__(server, params)
+except ImportError as _import_error:
+    logger.debug("redislite is not installed.")
 
-    @property
-    def redis_client_cls_kwargs(self):
-        return {"dbfilename": self.dbfilename}
+    class RedisLiteMixin(LazyLibImportError):
+        parent_exception = _import_error
 
 
 try:

tests/conftest.py

@@ -31,6 +31,11 @@ def _validate_backend_installed(cache_alias):
     if issubclass(backend, LazyLibImportError):
         return False
 
+    try:
+        caches[cache_alias]
+    except ImportError:
+        return False
+
     return True
 
 

tests/test_backends.py

@@ -1,6 +1,6 @@
 import pytest
 from django.conf import settings
-from django.core.cache import InvalidCacheBackendError, caches
+from django.core.cache import caches
 
 from django_cache_mock.exceptions import LazyLibImportError
 from tests.thread_with_exceptions import Thread
@@ -73,7 +73,7 @@ def test_memcached_import_error(memcached_cache_alias_not_installed):
     cache_alias = memcached_cache_alias_not_installed
     try:
         caches[cache_alias]
-    except InvalidCacheBackendError:
+    except ImportError:
         pass
     else:  # pragma: no cover
         pytest.fail("Cache unexpectedly worked.")