Allow directory names to contain spaces

Author: ianfixes

CHANGELOG.md

@@ -14,6 +14,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 ### Removed
 
 ### Fixed
+- Spaces in the names of project directores no longer cause unit test binaries to fail execution
 
 ### Security
 

lib/arduino_ci/cpp_library.rb

@@ -1,6 +1,7 @@
 require 'find'
 require "arduino_ci/host"
 require 'pathname'
+require 'shellwords'
 
 HPP_EXTENSIONS = [".hpp", ".hh", ".h", ".hxx", ".h++"].freeze
 CPP_EXTENSIONS = [".cpp", ".cc", ".c", ".cxx", ".c++"].freeze
@@ -287,7 +288,7 @@ def run_test_file(executable)
       @last_cmd = executable
       @last_out = ""
       @last_err = ""
-      Host.run_and_output(executable.to_s)
+      Host.run_and_output(executable.to_s.shellescape)
     end
 
   end