diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 30d8c53..0af4b2c 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -21,4 +21,5 @@ add_cmake_test(
   "Assert equal strings"
   "Assert unequal strings"
   "Mock message"
+  "Assert messages"
 )
diff --git a/test/cmake/AssertionTest.cmake b/test/cmake/AssertionTest.cmake
index a574eb8..5f1e4d9 100644
--- a/test/cmake/AssertionTest.cmake
+++ b/test/cmake/AssertionTest.cmake
@@ -27,18 +27,17 @@ function(test_assert_unequal_strings)
   assert_not_strequal("some string" "some other string")
 endfunction()
 
+function(call_sample_messages)
+  message(WARNING "some warning message")
+  message(WARNING "some other warning message")
+  message(ERROR "some error message")
+  message(FATAL_ERROR "some fatal error message")
+  message(ERROR "some other error message")
+endfunction()
+
 function(test_mock_message)
   mock_message(ON)
-
-  function(test)
-    message(WARNING "some warning message")
-    message(WARNING "some other warning message")
-    message(ERROR "some error message")
-    message(FATAL_ERROR "some fatal error message")
-    message(ERROR "some other error message")
-  endfunction()
-  test()
-
+  call_sample_messages()
   mock_message(OFF)
 
   assert_defined(WARNING_MESSAGES)
@@ -51,6 +50,17 @@ function(test_mock_message)
   assert_strequal("${FATAL_ERROR_MESSAGES}" "some fatal error message")
 endfunction()
 
+function(test_assert_messages)
+  mock_message(ON)
+  call_sample_messages()
+  mock_message(OFF)
+
+  assert_message(WARNING "some warning message")
+  assert_message(WARNING "some other warning message")
+  assert_message(ERROR "some error message")
+  assert_message(FATAL_ERROR "some fatal error message")
+endfunction()
+
 if(NOT DEFINED TEST_COMMAND)
   message(FATAL_ERROR "The 'TEST_COMMAND' variable should be defined")
 elseif(NOT COMMAND test_${TEST_COMMAND})