Ruby 3 compatibility changes

Rakefile

@@ -1,7 +1,7 @@
 require 'rubygems'
 require 'rake'
 
-require 'lib/sandbox' unless defined? Sandbox
+require_relative 'lib/sandbox' unless defined? Sandbox
 
 begin
   require 'echoe'
@@ -57,7 +57,7 @@ Dir[ "#{File.dirname(__FILE__)}/tasks/*.rake" ].sort.each { |ext| load ext }
 #   rdoc.rdoc_files.add( files )
 #   rdoc.main = "README" # page to start on
 #   rdoc.title = "sandbox"
-#   # rdoc.template = File.exists?( t="/Users/chris/ruby/projects/err/rock/template.rb" ) ? t : "/var/www/rock/template.rb"
+#   # rdoc.template = File.exist?( t="/Users/chris/ruby/projects/err/rock/template.rb" ) ? t : "/var/www/rock/template.rb"
 #   rdoc.rdoc_dir = 'doc' # rdoc output folder
 #   rdoc.options << '--inline-source'
 # end

features/steps/common.rb

@@ -70,13 +70,13 @@ def setup_active_project_folder project_name
 
 Then %r{^folder '(.*)' is created} do |folder|
   in_project_folder do
-    File.exists?(folder).should be_true
+    File.exist?(folder).should be_true
   end
 end
 
 Then %r{^file '(.*)' (is|is not) created} do |file, is|
   in_project_folder do
-    File.exists?(file).should(is == 'is' ? be_true : be_false)
+    File.exist?(file).should(is == 'is' ? be_true : be_false)
   end
 end
 
@@ -87,8 +87,8 @@ def setup_active_project_folder project_name
 end
 
 Then %r{gem file '(.*)' and generated file '(.*)' should be the same} do |gem_file, project_file|
-  File.exists?(gem_file).should be_true
-  File.exists?(project_file).should be_true
+  File.exist?(gem_file).should be_true
+  File.exist?(project_file).should be_true
   gem_file_contents = File.read(File.dirname(__FILE__) + "/../../#{gem_file}")
   project_file_contents = File.read(File.join(@active_project_folder, project_file))
   project_file_contents.should == gem_file_contents

lib/sandbox/installer.rb

@@ -131,7 +131,7 @@ def restore_sandbox_env
     def resolve_target( path )
       # should consider replacing with 'pathname' => Pathname.new( path )
       path = fix_path( path )
-      if File.exists?( path )
+      if File.exist?( path )
         raise Sandbox::Error, "target '#{path}' exists"
       end
 
@@ -153,7 +153,7 @@ def check_path!( path )
         else
           raise Sandbox::Error, "path '#{path}' has a permission problem"
         end
-      elsif File.exists?( path )
+      elsif File.exist?( path )
         raise Sandbox::Error, "path '#{path}' is not a directory"
       end
       false