diff --git a/test/core/TestingFunctionMacro_UnitTests.cmake b/test/core/TestingFunctionMacro_UnitTests.cmake
index 56dcb63da..a4e632c07 100644
--- a/test/core/TestingFunctionMacro_UnitTests.cmake
+++ b/test/core/TestingFunctionMacro_UnitTests.cmake
@@ -94,9 +94,12 @@ include(AppendStringVar)
 function(unittest_append_string_var)
 
   message("\n***")
-  message("*** Testing append_string_var()")
+  message("*** Testing append_string_var() (deprecated)")
   message("***\n")
 
+  # Suppress deprecation warnings
+  set(TRIBITS_HANDLE_TRIBITS_DEPRECATED_CODE IGNORE)
+
   message("append_string_var(): Testing simple concatenation")
   set(SOME_STRING_VAR "")
   append_string_var(SOME_STRING_VAR
diff --git a/test/core/TribitsAdjustPackageEnables_UnitTests.cmake b/test/core/TribitsAdjustPackageEnables_UnitTests.cmake
index 811333abf..b460f17de 100644
--- a/test/core/TribitsAdjustPackageEnables_UnitTests.cmake
+++ b/test/core/TribitsAdjustPackageEnables_UnitTests.cmake
@@ -379,6 +379,9 @@ function(unittest_enable_all_st_generate_export_deps_only_ex2package1_se_pkgs)
   message("*** Test generation of export dependencies only up to Ex2Package1 with deprecated var <Projecdt>_GENERATE_EXPORT_FILES_FOR_ONLY_LISTED_SE_PACKAGES")
   message("***\n")
 
+  # Suppress deprecation warnings
+  set(TRIBITS_HANDLE_TRIBITS_DEPRECATED_CODE IGNORE)
+
   # Debugging
   #set(${PROJECT_NAME}_VERBOSE_CONFIGURE ON)
   #set(${PROJECT_NAME}_DUMP_PACKAGE_DEPENDENCIES ON)
@@ -387,7 +390,7 @@ function(unittest_enable_all_st_generate_export_deps_only_ex2package1_se_pkgs)
   set(${PROJECT_NAME}_ENABLE_SECONDARY_TESTED_CODE ON)
   set(${PROJECT_NAME}_GENERATE_EXPORT_FILE_DEPENDENCIES ON)
   set(${PROJECT_NAME}_GENERATE_EXPORT_FILES_FOR_ONLY_LISTED_SE_PACKAGES
-    Ex2Package1 RTOp)
+    Ex2Package1 RTOp)  # Deprecated!
 
   unittest_helper_read_and_process_packages()
 
diff --git a/test/core/TribitsReadAllProjectDepsFilesCreateDepsGraph_UnitTests.cmake b/test/core/TribitsReadAllProjectDepsFilesCreateDepsGraph_UnitTests.cmake
index 878459e52..f742ecbb4 100644
--- a/test/core/TribitsReadAllProjectDepsFilesCreateDepsGraph_UnitTests.cmake
+++ b/test/core/TribitsReadAllProjectDepsFilesCreateDepsGraph_UnitTests.cmake
@@ -195,6 +195,9 @@ function(unitest_tribits_set_ss_for_dev_mode_backward_compatible)
   message("*** Testing tribits_set_ss_for_dev_mode() backward compatibility")
   message("***\n")
 
+  # Suppress deprecation warnings
+  set(TRIBITS_HANDLE_TRIBITS_DEPRECATED_CODE IGNORE)
+
   message("\nTest in dev mode, ST off ...")
   set(${PROJECT_NAME}_ENABLE_DEVELOPMENT_MODE ON)
   set(${PROJECT_NAME}_ENABLE_SECONDARY_TESTED_CODE OFF)