test/rdoc: avoid tempfile leaks

* test/rdoc/test_rdoc_parser.rb (test_class_for_forbidden): avoid
  tempfile leaks by using `Tempfile.create` instead of
  `Tempfile.open`.
* test/rdoc/test_rdoc_rd_block_parser.rb (test_parse_include_subtree):
  ditto.
* test/rdoc/test_rdoc_rdoc.rb (test_parse_file_encoding): ditto.
* test/rdoc/test_rdoc_rdoc.rb (test_parse_file_forbidden): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46143 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/rdoc/test_rdoc_parser.rb

@@ -96,7 +96,7 @@ class TestRDocParser < RDoc::TestCase
   def test_class_for_forbidden
     skip 'chmod not supported' if Gem.win_platform?
 
-    Tempfile.open 'forbidden' do |io|
+    Tempfile.create 'forbidden' do |io|
       begin
         File.chmod 0000, io.path
         forbidden = @store.add_file io.path

test/rdoc/test_rdoc_rd_block_parser.rb

@@ -153,7 +153,7 @@ class TestRDocRdBlockParser < RDoc::TestCase
         blank_line,
         blank_line)
 
-    Tempfile.open %w[parse_include .rd] do |io|
+    Tempfile.create %w[parse_include .rd] do |io|
       io.puts "=begin\ninclude ((*worked*))\n=end"
       io.flush
 

test/rdoc/test_rdoc_rdoc.rb

@@ -252,7 +252,7 @@ class TestRDocRDoc < RDoc::TestCase
     @rdoc.options.encoding = Encoding::ISO_8859_1
     @rdoc.store = RDoc::Store.new
 
-    Tempfile.open 'test.txt' do |io|
+    Tempfile.create 'test.txt' do |io|
       io.write 'hi'
       io.rewind
 
@@ -267,7 +267,7 @@ class TestRDocRDoc < RDoc::TestCase
 
     @rdoc.store = RDoc::Store.new
 
-    Tempfile.open 'test.txt' do |io|
+    Tempfile.create 'test.txt' do |io|
       io.write 'hi'
       io.rewind
 
@@ -382,7 +382,7 @@ class TestRDocRDoc < RDoc::TestCase
   end
 
   def test_setup_output_dir_exists_file
-    Tempfile.open 'test_rdoc_rdoc' do |tempfile|
+    Tempfile.create 'test_rdoc_rdoc' do |tempfile|
       path = tempfile.path
 
       e = assert_raises RDoc::Error do