FileUtils#rm and File#delete should raise Errno::ENOENT when any file

does not exist (Closes #70)

lib/fakefs/file_system.rb

@@ -68,6 +68,7 @@ module FakeFS
     def delete(path)
       if node = FileSystem.find(path)
         node.delete
+        true
       end
     end
 

lib/fakefs/fileutils.rb

@@ -30,7 +30,7 @@ module FakeFS
 
     def rm(list, options = {})
       Array(list).each do |path|
-        FileSystem.delete(path)
+        FileSystem.delete(path) or raise Errno::ENOENT.new(path)
       end
     end
 

test/fakefs_test.rb

@@ -65,6 +65,12 @@ class FakeFSTest < Test::Unit::TestCase
     assert_kind_of FakeDir, FileSystem.fs['path']['to']['dir']
   end
 
+  def test_unlink_errors_on_file_not_found
+    assert_raise Errno::ENOENT do
+      FileUtils.rm("/foo")
+    end
+  end
+
   def test_can_delete_directories
     FileUtils.mkdir_p("/path/to/dir")
     FileUtils.rmdir("/path/to/dir")
@@ -1582,14 +1588,6 @@ class FakeFSTest < Test::Unit::TestCase
     end
   end
 
-  def test_delete_does_not_raise_error_when_second_file_does_not_exist
-    FileUtils.touch("/foo")
-
-    assert_nothing_raised do
-      File.delete("/foo", "/bar")
-    end
-  end
-
   def test_unlink_is_alias_for_delete
     assert_equal File.method(:unlink), File.method(:delete)
   end