diff --git a/tests/test_primitive_data/test_boolean.py b/tests/test_primitive_data/test_boolean.py
index 2b4ac3f..cbc537e 100644
--- a/tests/test_primitive_data/test_boolean.py
+++ b/tests/test_primitive_data/test_boolean.py
@@ -109,8 +109,8 @@ class TestBoolean(unittest.TestCase):
         with self.assertRaises(ValueError):
             Boolean(tag)
 
-    def test_boolean_boolean(self):
-        if _debug: TestBoolean._debug("test_boolean_boolean")
+    def test_boolean_copy(self):
+        if _debug: TestBoolean._debug("test_boolean_copy")
 
         obj1 = Boolean(True)
         obj2 = Boolean(obj1)
diff --git a/tests/test_primitive_data/test_integer.py b/tests/test_primitive_data/test_integer.py
index afbbe99..fde04f0 100644
--- a/tests/test_primitive_data/test_integer.py
+++ b/tests/test_primitive_data/test_integer.py
@@ -110,8 +110,8 @@ class TestInteger(unittest.TestCase):
         with self.assertRaises(ValueError):
             Integer(tag)
 
-    def test_integer_integer(self):
-        if _debug: TestInteger._debug("test_integer_integer")
+    def test_integer_copy(self):
+        if _debug: TestInteger._debug("test_integer_copy")
 
         obj1 = Integer(12)
         obj2 = Integer(obj1)
diff --git a/tests/test_primitive_data/test_null.py b/tests/test_primitive_data/test_null.py
index daefe5d..4599475 100644
--- a/tests/test_primitive_data/test_null.py
+++ b/tests/test_primitive_data/test_null.py
@@ -93,8 +93,8 @@ class TestNull(unittest.TestCase):
         obj = Null(tag)
         assert obj.value == ()
 
-    def test_null_null(self):
-        if _debug: TestInteger._debug("test_null_null")
+    def test_null_copy(self):
+        if _debug: TestInteger._debug("test_null_copy")
 
         obj1 = Null()
         obj2 = Null(obj1)
diff --git a/tests/test_primitive_data/test_unsigned.py b/tests/test_primitive_data/test_unsigned.py
index 592ebc0..28c567e 100644
--- a/tests/test_primitive_data/test_unsigned.py
+++ b/tests/test_primitive_data/test_unsigned.py
@@ -109,8 +109,8 @@ class TestUnsigned(unittest.TestCase):
         with self.assertRaises(ValueError):
             Unsigned(tag)
 
-    def test_unsigned_unsigned(self):
-        if _debug: TestUnsigned._debug("test_unsigned_unsigned")
+    def test_unsigned_copy(self):
+        if _debug: TestUnsigned._debug("test_unsigned_copy")
 
         obj1 = Unsigned(12)
         obj2 = Unsigned(obj1)