diff --git a/Tests/RunCMake/cmake_host_system_information/MacOS-stdout.txt b/Tests/RunCMake/cmake_host_system_information/MacOS-stdout.txt
new file mode 100644
index 0000000000..c86ae923c3
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/MacOS-stdout.txt
@@ -0,0 +1 @@
+-- os_name='(macOS|Mac OS X)'
diff --git a/Tests/RunCMake/cmake_host_system_information/MacOS.cmake b/Tests/RunCMake/cmake_host_system_information/MacOS.cmake
new file mode 100644
index 0000000000..d0d213a766
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/MacOS.cmake
@@ -0,0 +1,3 @@
+set(ENV{MallocGuardEdges} 1) # test tolerating sw_vers stderr
+cmake_host_system_information(RESULT os_name QUERY OS_NAME)
+message(STATUS "os_name='${os_name}'")
diff --git a/Tests/RunCMake/cmake_host_system_information/RunCMakeTest.cmake b/Tests/RunCMake/cmake_host_system_information/RunCMakeTest.cmake
index 76dff4f1bf..3917913e37 100644
--- a/Tests/RunCMake/cmake_host_system_information/RunCMakeTest.cmake
+++ b/Tests/RunCMake/cmake_host_system_information/RunCMakeTest.cmake
@@ -14,6 +14,10 @@ run_cmake(Ubuntu)
 run_cmake(CentOS6)
 run_cmake(Debian6)
 
+if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Darwin")
+  run_cmake(MacOS)
+endif()
+
 run_cmake(UserFallbackScript)
 
 if(RunCMake_GENERATOR MATCHES "Visual Studio")