- add ceedling/cmock/unity as testing framework and support

- unified makefile project for the whole repos
- new separate project for tests

tests/vendor/ceedling/lib/project_file_loader.rb

@@ -0,0 +1,64 @@
+require 'constants'
+
+
+class ProjectFileLoader
+
+  attr_reader :main_file, :user_file
+
+  constructor :yaml_wrapper, :stream_wrapper, :system_wrapper, :file_wrapper
+
+  def setup
+    @main_file = nil
+    @user_file = nil
+    
+    @main_project_filepath = ''
+    @user_project_filepath = ''
+  end
+
+
+  def find_project_files
+    # first go hunting for optional user project file by looking for environment variable and then default location on disk
+    user_filepath = @system_wrapper.env_get('CEEDLING_USER_PROJECT_FILE')
+    
+    if ( not user_filepath.nil? and @file_wrapper.exist?(user_filepath) )
+      @user_project_filepath = user_filepath
+    elsif (@file_wrapper.exist?(DEFAULT_CEEDLING_USER_PROJECT_FILE))
+      @user_project_filepath = DEFAULT_CEEDLING_USER_PROJECT_FILE
+    end
+    
+    # next check for main project file by looking for environment variable and then default location on disk;
+    # blow up if we don't find this guy -- like, he's so totally important
+    main_filepath = @system_wrapper.env_get('CEEDLING_MAIN_PROJECT_FILE')
+    
+    if ( not main_filepath.nil? and @file_wrapper.exist?(main_filepath) )
+      @main_project_filepath = main_filepath
+    elsif (@file_wrapper.exist?(DEFAULT_CEEDLING_MAIN_PROJECT_FILE))
+      @main_project_filepath = DEFAULT_CEEDLING_MAIN_PROJECT_FILE
+    else
+      # no verbosity checking since this is lowest level reporting anyhow &
+      # verbosity checking depends on configurator which in turns needs this class (circular dependency)
+      @stream_wrapper.stderr_puts('Found no Ceedling project file (*.yml)')
+      raise
+    end
+    
+    @main_file = File.basename( @main_project_filepath )
+    @user_file = File.basename( @user_project_filepath ) if ( not @user_project_filepath.empty? )
+  end
+
+
+  def load_project_config
+    config_hash = {}
+    
+    # if there's no user project file, then just provide hash from project file
+    if (@user_project_filepath.empty?)
+      config_hash = @yaml_wrapper.load(@main_project_filepath)
+    # if there is a user project file, load it too and merge it on top of the project file,
+    # superseding anything that's common between them
+    else
+      config_hash = (@yaml_wrapper.load(@main_project_filepath)).merge(@yaml_wrapper.load(@user_project_filepath))
+    end
+    
+    return config_hash
+  end
+      
+end