avoid problems related to finding a symbolic link

Author: ianfixes

lib/arduino_ci/cpp_library.rb

@@ -27,12 +27,17 @@ def initialize(base_dir)
  end
 
  def cpp_files_in(some_dir)
- Find.find(some_dir).select { |path| CPP_EXTENSIONS.include?(File.extname(path)) }
+ real = File.realpath(some_dir)
+ Find.find(real).select { |path| CPP_EXTENSIONS.include?(File.extname(path)) }
  end
 
  # CPP files that are part of the project library under test
  def cpp_files
- cpp_files_in(@base_dir).reject { |p| p.start_with?(tests_dir + File::SEPARATOR) }
+ real_tests_dir = File.realpath(tests_dir)
+ cpp_files_in(@base_dir).reject do |p|
+ next true if File.dirname(p).include?(tests_dir)
+ next true if File.dirname(p).include?(real_tests_dir)
+ end
  end
 
  # CPP files that are part of the arduino mock library we're providing