diff --git a/pytest.ini b/pytest.ini
index 7b21133f..a0c7e9b8 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -8,6 +8,7 @@ markers =
     memory: test the memory core
     pickle: test the pickle core
 addopts =
+    --color=yes
     # --doctest-modules
     --cov=cachier
     --cov-report term
diff --git a/tests/test_general.py b/tests/test_general.py
index f0d110ce..6ddf8510 100644
--- a/tests/test_general.py
+++ b/tests/test_general.py
@@ -154,8 +154,7 @@ def _calls_wait_for_calc_timeout_slow(res_queue):
 @pytest.mark.parametrize(
     'mongetter,backend',
     [
-        # (_test_mongetter, 'mongo'),  # Please do NOT test the mongo backend
-        # here.  It is tested in test_mongo_core.py
+        pytest.param(_test_mongetter, 'mongo', marks=pytest.mark.mongo),
         (None, 'memory'),
         (None, 'pickle'),
     ]
@@ -183,8 +182,7 @@ def func(arg_1, arg_2):
 @pytest.mark.parametrize(
     'mongetter,backend',
     [
-        # (_test_mongetter, 'mongo'),  # Please do NOT test the mongo backend
-        # here.  It is tested in test_mongo_core.py
+        pytest.param(_test_mongetter, 'mongo', marks=pytest.mark.mongo),
         (None, 'memory'),
         (None, 'pickle'),
     ]
diff --git a/tests/test_mongo_core.py b/tests/test_mongo_core.py
index 2174d734..4d9db84e 100644
--- a/tests/test_mongo_core.py
+++ b/tests/test_mongo_core.py
@@ -8,7 +8,7 @@
 import threading
 from datetime import timedelta
 from random import random
-from time import sleep, time
+from time import sleep
 from urllib.parse import quote_plus
 
 from birch import Birch  # type: ignore[import-not-found]
@@ -120,50 +120,6 @@ def _test_mongo_caching(arg_1, arg_2):
     assert val6 == val5
 
 
-@pytest.mark.mongo
-def test_mongo_precache_value():
-
-    @cachier(backend='mongo', mongetter=_test_mongetter)
-    def func(arg_1, arg_2):
-        """Some function."""
-        return arg_1 + arg_2
-
-    result = func.precache_value(2, 2, value_to_cache=5)
-    assert result == 5
-    result = func(2, 2)
-    assert result == 5
-    func.clear_cache()
-    result = func(2, 2)
-    assert result == 4
-    result = func.precache_value(2, arg_2=2, value_to_cache=5)
-    assert result == 5
-    result = func(2, arg_2=2)
-    assert result == 5
-
-
-@pytest.mark.mongo
-def test_mongo_ignore_self_in_methods():
-
-    class TestClass():
-        @cachier(backend='mongo', mongetter=_test_mongetter)
-        def takes_2_seconds(self, arg_1, arg_2):
-            """Some function."""
-            sleep(2)
-            return arg_1 + arg_2
-
-    test_object_1 = TestClass()
-    test_object_2 = TestClass()
-    test_object_1.takes_2_seconds.clear_cache()
-    test_object_2.takes_2_seconds.clear_cache()
-    result_1 = test_object_1.takes_2_seconds(1, 2)
-    assert result_1 == 3
-    start = time()
-    result_2 = test_object_2.takes_2_seconds(1, 2)
-    end = time()
-    assert result_2 == 3
-    assert end - start < 1
-
-
 @pytest.mark.mongo
 def test_mongo_core_keywords():
     """Basic Mongo core functionality with keyword arguments."""