anchor.diff:  ----
   
   In the above code, a unit test binary is added, which links against the google test unit-test-framework using the
  -alias target setup during the link:3rd_party/google-test/CMakeLists.txt[download and build] of GTest.
  +ALIAS target setup during the link:3rd_party/google-test/CMakeLists.txt[download and build] of GTest.
   
   ## Add A test
   
  
positive.code: 
  Alternatives to this method include:
  
    * Use something like +git submodule+ to download the source to a folder in your tree and then do +add_subdirectory+
    * Vendor the google test source code within your repository
    * Build google test externally and link it using +find_package(GTest)+ - Not recommended by the google test authors anymore
  
  ## Enabling testing
  
  
negative.code: 
  # Requirements
  
  An internet connection. This example will download the google test library the first time you run the CMake configure step. See the 
  link:https://github.com/google/googletest/blob/master/googletest/README.md[google test readme] and link:http://crascit.com/2015/07/25/cmake-gtest/[here] for details. 
  
  # Concepts
  