Update to ruby/spec@c1b568b

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62656 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

84 files changed, 168 insertions, 168 deletions

diff --git a/spec/ruby/core/io/advise_spec.rb b/spec/ruby/core/io/advise_spec.rb
index 44cd32df94..81d5a49849 100644
--- a/spec/ruby/core/io/advise_spec.rb
+++ b/spec/ruby/core/io/advise_spec.rb
@@ -1,6 +1,6 @@
 # -*- encoding: utf-8 -*-
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#advise" do
   before :each do
diff --git a/spec/ruby/core/io/binmode_spec.rb b/spec/ruby/core/io/binmode_spec.rb
index f437c8a4a4..cc10e297dd 100644
--- a/spec/ruby/core/io/binmode_spec.rb
+++ b/spec/ruby/core/io/binmode_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#binmode" do
   before :each do
diff --git a/spec/ruby/core/io/binread_spec.rb b/spec/ruby/core/io/binread_spec.rb
index b592639f9d..b7ab8e7fbc 100644
--- a/spec/ruby/core/io/binread_spec.rb
+++ b/spec/ruby/core/io/binread_spec.rb
@@ -1,6 +1,6 @@
 # -*- encoding: utf-8 -*-
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO.binread" do
   before :each do
diff --git a/spec/ruby/core/io/binwrite_spec.rb b/spec/ruby/core/io/binwrite_spec.rb
index ec964d07a8..e28ea8ebb1 100644
--- a/spec/ruby/core/io/binwrite_spec.rb
+++ b/spec/ruby/core/io/binwrite_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../shared/binwrite', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'shared/binwrite'
 
 describe "IO.binwrite" do
   it_behaves_like :io_binwrite, :binwrite
diff --git a/spec/ruby/core/io/bytes_spec.rb b/spec/ruby/core/io/bytes_spec.rb
index 3eb51883c4..2d2bd950f1 100644
--- a/spec/ruby/core/io/bytes_spec.rb
+++ b/spec/ruby/core/io/bytes_spec.rb
@@ -1,6 +1,6 @@
 # -*- encoding: utf-8 -*-
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#bytes" do
   before :each do
diff --git a/spec/ruby/core/io/chars_spec.rb b/spec/ruby/core/io/chars_spec.rb
index e38160274f..cd5dbbce4f 100644
--- a/spec/ruby/core/io/chars_spec.rb
+++ b/spec/ruby/core/io/chars_spec.rb
@@ -1,7 +1,7 @@
 # -*- encoding: utf-8 -*-
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
-require File.expand_path('../shared/chars', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+require_relative 'shared/chars'
 
 describe "IO#chars" do
   it_behaves_like :io_chars, :chars
diff --git a/spec/ruby/core/io/close_on_exec_spec.rb b/spec/ruby/core/io/close_on_exec_spec.rb
index 057a9a1c20..53546e6bb6 100644
--- a/spec/ruby/core/io/close_on_exec_spec.rb
+++ b/spec/ruby/core/io/close_on_exec_spec.rb
@@ -1,4 +1,4 @@
-require File.expand_path('../../../spec_helper', __FILE__)
+require_relative '../../spec_helper'
 
 describe "IO#close_on_exec=" do
   before :each do
diff --git a/spec/ruby/core/io/close_read_spec.rb b/spec/ruby/core/io/close_read_spec.rb
index b5aba57795..f928808c9b 100644
--- a/spec/ruby/core/io/close_read_spec.rb
+++ b/spec/ruby/core/io/close_read_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#close_read" do
 
diff --git a/spec/ruby/core/io/close_spec.rb b/spec/ruby/core/io/close_spec.rb
index 77a8748e7c..7a2b97ac29 100644
--- a/spec/ruby/core/io/close_spec.rb
+++ b/spec/ruby/core/io/close_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#close" do
   before :each do
diff --git a/spec/ruby/core/io/close_write_spec.rb b/spec/ruby/core/io/close_write_spec.rb
index c901aac499..c2577536fa 100644
--- a/spec/ruby/core/io/close_write_spec.rb
+++ b/spec/ruby/core/io/close_write_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#close_write" do
   before :each do
diff --git a/spec/ruby/core/io/closed_spec.rb b/spec/ruby/core/io/closed_spec.rb
index 80562885a7..7316546a0d 100644
--- a/spec/ruby/core/io/closed_spec.rb
+++ b/spec/ruby/core/io/closed_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#closed?" do
   before :each do
diff --git a/spec/ruby/core/io/codepoints_spec.rb b/spec/ruby/core/io/codepoints_spec.rb
index b232a9c598..915d99c027 100644
--- a/spec/ruby/core/io/codepoints_spec.rb
+++ b/spec/ruby/core/io/codepoints_spec.rb
@@ -1,6 +1,6 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
-require File.expand_path('../shared/codepoints', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+require_relative 'shared/codepoints'
 
 # See redmine #1667
 describe "IO#codepoints" do
diff --git a/spec/ruby/core/io/constants_spec.rb b/spec/ruby/core/io/constants_spec.rb
index 0a2ea70560..f9dccd08b9 100644
--- a/spec/ruby/core/io/constants_spec.rb
+++ b/spec/ruby/core/io/constants_spec.rb
@@ -1,4 +1,4 @@
-require File.expand_path('../../../spec_helper', __FILE__)
+require_relative '../../spec_helper'
 
 describe "IO::SEEK_SET" do
   it "is defined" do
diff --git a/spec/ruby/core/io/copy_stream_spec.rb b/spec/ruby/core/io/copy_stream_spec.rb
index 344746fac3..622be0818b 100644
--- a/spec/ruby/core/io/copy_stream_spec.rb
+++ b/spec/ruby/core/io/copy_stream_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe :io_copy_stream_to_file, shared: true do
   it "copies the entire IO contents to the file" do
diff --git a/spec/ruby/core/io/dup_spec.rb b/spec/ruby/core/io/dup_spec.rb
index a90b04aa5d..421ae27f24 100644
--- a/spec/ruby/core/io/dup_spec.rb
+++ b/spec/ruby/core/io/dup_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#dup" do
   before :each do
diff --git a/spec/ruby/core/io/each_byte_spec.rb b/spec/ruby/core/io/each_byte_spec.rb
index 0dc535a159..9cdb1ac0c9 100644
--- a/spec/ruby/core/io/each_byte_spec.rb
+++ b/spec/ruby/core/io/each_byte_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#each_byte" do
   before :each do
diff --git a/spec/ruby/core/io/each_char_spec.rb b/spec/ruby/core/io/each_char_spec.rb
index 69c6739920..5d460a1e7c 100644
--- a/spec/ruby/core/io/each_char_spec.rb
+++ b/spec/ruby/core/io/each_char_spec.rb
@@ -1,7 +1,7 @@
 # -*- encoding: utf-8 -*-
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
-require File.expand_path('../shared/chars', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+require_relative 'shared/chars'
 
 describe "IO#each_char" do
   it_behaves_like :io_chars, :each_char
diff --git a/spec/ruby/core/io/each_codepoint_spec.rb b/spec/ruby/core/io/each_codepoint_spec.rb
index 2bcf898c89..920aaef07d 100644
--- a/spec/ruby/core/io/each_codepoint_spec.rb
+++ b/spec/ruby/core/io/each_codepoint_spec.rb
@@ -1,6 +1,6 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
-require File.expand_path('../shared/codepoints', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+require_relative 'shared/codepoints'
 
 # See redmine #1667
 describe "IO#each_codepoint" do
diff --git a/spec/ruby/core/io/each_line_spec.rb b/spec/ruby/core/io/each_line_spec.rb
index d4d8af7902..58d26b325d 100644
--- a/spec/ruby/core/io/each_line_spec.rb
+++ b/spec/ruby/core/io/each_line_spec.rb
@@ -1,6 +1,6 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
-require File.expand_path('../shared/each', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+require_relative 'shared/each'
 
 describe "IO#each_line" do
   it_behaves_like :io_each, :each_line
diff --git a/spec/ruby/core/io/each_spec.rb b/spec/ruby/core/io/each_spec.rb
index 4d6aa50fb2..91ecbd19c8 100644
--- a/spec/ruby/core/io/each_spec.rb
+++ b/spec/ruby/core/io/each_spec.rb
@@ -1,6 +1,6 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
-require File.expand_path('../shared/each', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+require_relative 'shared/each'
 
 describe "IO#each" do
   it_behaves_like :io_each, :each
diff --git a/spec/ruby/core/io/eof_spec.rb b/spec/ruby/core/io/eof_spec.rb
index a2c5e563f0..3ab389af09 100644
--- a/spec/ruby/core/io/eof_spec.rb
+++ b/spec/ruby/core/io/eof_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#eof?" do
   before :each do
diff --git a/spec/ruby/core/io/external_encoding_spec.rb b/spec/ruby/core/io/external_encoding_spec.rb
index ec85eba2ee..e625484670 100644
--- a/spec/ruby/core/io/external_encoding_spec.rb
+++ b/spec/ruby/core/io/external_encoding_spec.rb
@@ -1,4 +1,4 @@
-require File.expand_path('../../../spec_helper', __FILE__)
+require_relative '../../spec_helper'
 
 with_feature :encoding do
   describe :io_external_encoding_write, shared: true do
diff --git a/spec/ruby/core/io/fcntl_spec.rb b/spec/ruby/core/io/fcntl_spec.rb
index 0e20f50f60..049f92c0a2 100644
--- a/spec/ruby/core/io/fcntl_spec.rb
+++ b/spec/ruby/core/io/fcntl_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#fcntl" do
   it "raises IOError on closed stream" do
diff --git a/spec/ruby/core/io/fdatasync_spec.rb b/spec/ruby/core/io/fdatasync_spec.rb
index 9bcbbda336..6242258ea0 100644
--- a/spec/ruby/core/io/fdatasync_spec.rb
+++ b/spec/ruby/core/io/fdatasync_spec.rb
@@ -1,4 +1,4 @@
-require File.expand_path('../../../spec_helper', __FILE__)
+require_relative '../../spec_helper'
 
 describe "IO#fdatasync" do
   it "needs to be reviewed for spec completeness"
diff --git a/spec/ruby/core/io/fileno_spec.rb b/spec/ruby/core/io/fileno_spec.rb
index 259ac38073..d7aff99e72 100644
--- a/spec/ruby/core/io/fileno_spec.rb
+++ b/spec/ruby/core/io/fileno_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#fileno" do
   it "returns the numeric file descriptor of the given IO object" do
diff --git a/spec/ruby/core/io/flush_spec.rb b/spec/ruby/core/io/flush_spec.rb
index c877650ecd..c81ff74a69 100644
--- a/spec/ruby/core/io/flush_spec.rb
+++ b/spec/ruby/core/io/flush_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#flush" do
   it "raises IOError on closed stream" do
diff --git a/spec/ruby/core/io/for_fd_spec.rb b/spec/ruby/core/io/for_fd_spec.rb
index b4abc1f87c..2d86361b73 100644
--- a/spec/ruby/core/io/for_fd_spec.rb
+++ b/spec/ruby/core/io/for_fd_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../shared/new', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'shared/new'
 
 describe "IO.for_fd" do
   it_behaves_like :io_new, :for_fd
diff --git a/spec/ruby/core/io/foreach_spec.rb b/spec/ruby/core/io/foreach_spec.rb
index f5fa1459e9..c5c1178787 100644
--- a/spec/ruby/core/io/foreach_spec.rb
+++ b/spec/ruby/core/io/foreach_spec.rb
@@ -1,7 +1,7 @@
 # -*- encoding: utf-8 -*-
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
-require File.expand_path('../shared/readlines', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+require_relative 'shared/readlines'
 
 describe "IO.foreach" do
   before :each do
diff --git a/spec/ruby/core/io/fsync_spec.rb b/spec/ruby/core/io/fsync_spec.rb
index 7816ecc42b..0261939631 100644
--- a/spec/ruby/core/io/fsync_spec.rb
+++ b/spec/ruby/core/io/fsync_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#fsync" do
   before :each do
diff --git a/spec/ruby/core/io/getbyte_spec.rb b/spec/ruby/core/io/getbyte_spec.rb
index cb8929890f..6b665029d6 100644
--- a/spec/ruby/core/io/getbyte_spec.rb
+++ b/spec/ruby/core/io/getbyte_spec.rb
@@ -1,6 +1,6 @@
 # -*- encoding: utf-8 -*-
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#getbyte" do
   before :each do
diff --git a/spec/ruby/core/io/getc_spec.rb b/spec/ruby/core/io/getc_spec.rb
index dfff1a9583..7c1c18cd90 100644
--- a/spec/ruby/core/io/getc_spec.rb
+++ b/spec/ruby/core/io/getc_spec.rb
@@ -1,6 +1,6 @@
 # -*- encoding: utf-8 -*-
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#getc" do
   before :each do
diff --git a/spec/ruby/core/io/gets_spec.rb b/spec/ruby/core/io/gets_spec.rb
index 6e0518b512..b22b226beb 100644
--- a/spec/ruby/core/io/gets_spec.rb
+++ b/spec/ruby/core/io/gets_spec.rb
@@ -1,7 +1,7 @@
 # -*- encoding: utf-8 -*-
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
-require File.expand_path('../shared/gets_ascii', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+require_relative 'shared/gets_ascii'
 
 describe "IO#gets" do
   it_behaves_like :io_gets_ascii, :gets
diff --git a/spec/ruby/core/io/initialize_spec.rb b/spec/ruby/core/io/initialize_spec.rb
index 4731257625..8fb606d282 100644
--- a/spec/ruby/core/io/initialize_spec.rb
+++ b/spec/ruby/core/io/initialize_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#initialize" do
   before :each do
diff --git a/spec/ruby/core/io/inspect_spec.rb b/spec/ruby/core/io/inspect_spec.rb
index 1c6bf99b44..c653c307c4 100644
--- a/spec/ruby/core/io/inspect_spec.rb
+++ b/spec/ruby/core/io/inspect_spec.rb
@@ -1,4 +1,4 @@
-require File.expand_path('../../../spec_helper', __FILE__)
+require_relative '../../spec_helper'
 
 describe "IO#inspect" do
   after :each do
diff --git a/spec/ruby/core/io/internal_encoding_spec.rb b/spec/ruby/core/io/internal_encoding_spec.rb
index 7578559838..a4f13fa100 100644
--- a/spec/ruby/core/io/internal_encoding_spec.rb
+++ b/spec/ruby/core/io/internal_encoding_spec.rb
@@ -1,4 +1,4 @@
-require File.expand_path('../../../spec_helper', __FILE__)
+require_relative '../../spec_helper'
 
 with_feature :encoding do
   describe :io_internal_encoding, shared: true do
diff --git a/spec/ruby/core/io/io_spec.rb b/spec/ruby/core/io/io_spec.rb
index e196628ef0..0feb1a8774 100644
--- a/spec/ruby/core/io/io_spec.rb
+++ b/spec/ruby/core/io/io_spec.rb
@@ -1,4 +1,4 @@
-require File.expand_path('../../../spec_helper', __FILE__)
+require_relative '../../spec_helper'
 
 describe "IO" do
   it "includes File::Constants" do
diff --git a/spec/ruby/core/io/ioctl_spec.rb b/spec/ruby/core/io/ioctl_spec.rb
index 3b2d271c0c..726f0c9c51 100644
--- a/spec/ruby/core/io/ioctl_spec.rb
+++ b/spec/ruby/core/io/ioctl_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#ioctl" do
   platform_is_not :windows do
diff --git a/spec/ruby/core/io/isatty_spec.rb b/spec/ruby/core/io/isatty_spec.rb
index 87172dddd7..3b6c69b190 100644
--- a/spec/ruby/core/io/isatty_spec.rb
+++ b/spec/ruby/core/io/isatty_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../shared/tty', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'shared/tty'
 
 describe "IO#isatty" do
   it_behaves_like :io_tty, :isatty
diff --git a/spec/ruby/core/io/lineno_spec.rb b/spec/ruby/core/io/lineno_spec.rb
index 4fddbf135c..322e60d643 100644
--- a/spec/ruby/core/io/lineno_spec.rb
+++ b/spec/ruby/core/io/lineno_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#lineno" do
   before :each do
diff --git a/spec/ruby/core/io/lines_spec.rb b/spec/ruby/core/io/lines_spec.rb
index 90ddc4e4cf..a8b8023a2a 100644
--- a/spec/ruby/core/io/lines_spec.rb
+++ b/spec/ruby/core/io/lines_spec.rb
@@ -1,6 +1,6 @@
 # -*- encoding: utf-8 -*-
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#lines" do
   before :each do
diff --git a/spec/ruby/core/io/new_spec.rb b/spec/ruby/core/io/new_spec.rb
index ce922a4856..3597098caf 100644
--- a/spec/ruby/core/io/new_spec.rb
+++ b/spec/ruby/core/io/new_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../shared/new', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'shared/new'
 
 describe "IO.new" do
   it_behaves_like :io_new, :new
diff --git a/spec/ruby/core/io/open_spec.rb b/spec/ruby/core/io/open_spec.rb
index f87ee6c7c2..f26753cde7 100644
--- a/spec/ruby/core/io/open_spec.rb
+++ b/spec/ruby/core/io/open_spec.rb
@@ -1,6 +1,6 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
-require File.expand_path('../shared/new', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+require_relative 'shared/new'
 
 describe "IO.open" do
   it_behaves_like :io_new, :open
diff --git a/spec/ruby/core/io/output_spec.rb b/spec/ruby/core/io/output_spec.rb
index 2d52315430..d3ec71c563 100644
--- a/spec/ruby/core/io/output_spec.rb
+++ b/spec/ruby/core/io/output_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#<<" do
   it "writes an object to the IO stream" do
diff --git a/spec/ruby/core/io/pid_spec.rb b/spec/ruby/core/io/pid_spec.rb
index a4f6bbfcf8..97b8a8529d 100644
--- a/spec/ruby/core/io/pid_spec.rb
+++ b/spec/ruby/core/io/pid_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes.rb', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#pid" do
   before :each do
diff --git a/spec/ruby/core/io/pipe_spec.rb b/spec/ruby/core/io/pipe_spec.rb
index b4984fdeb7..005f60fab6 100644
--- a/spec/ruby/core/io/pipe_spec.rb
+++ b/spec/ruby/core/io/pipe_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO.pipe" do
   after :each do
diff --git a/spec/ruby/core/io/popen_spec.rb b/spec/ruby/core/io/popen_spec.rb
index 808dff7260..d15ac48fe4 100644
--- a/spec/ruby/core/io/popen_spec.rb
+++ b/spec/ruby/core/io/popen_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO.popen" do
   before :each do
diff --git a/spec/ruby/core/io/pos_spec.rb b/spec/ruby/core/io/pos_spec.rb
index 300925a284..ca0a761c8f 100644
--- a/spec/ruby/core/io/pos_spec.rb
+++ b/spec/ruby/core/io/pos_spec.rb
@@ -1,6 +1,6 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
-require File.expand_path('../shared/pos', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+require_relative 'shared/pos'
 
 describe "IO#pos" do
   it_behaves_like :io_pos, :pos
diff --git a/spec/ruby/core/io/print_spec.rb b/spec/ruby/core/io/print_spec.rb
index e852757385..a4a069361e 100644
--- a/spec/ruby/core/io/print_spec.rb
+++ b/spec/ruby/core/io/print_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe IO, "#print" do
   before :each do
diff --git a/spec/ruby/core/io/printf_spec.rb b/spec/ruby/core/io/printf_spec.rb
index 34be4c8e79..be4e5c339e 100644
--- a/spec/ruby/core/io/printf_spec.rb
+++ b/spec/ruby/core/io/printf_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#printf" do
   before :each do
diff --git a/spec/ruby/core/io/putc_spec.rb b/spec/ruby/core/io/putc_spec.rb
index 9803d0c1a1..73473ad821 100644
--- a/spec/ruby/core/io/putc_spec.rb
+++ b/spec/ruby/core/io/putc_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../../../shared/io/putc', __FILE__)
+require_relative '../../spec_helper'
+require_relative '../../shared/io/putc'
 
 describe "IO#putc" do
   before :each do
diff --git a/spec/ruby/core/io/puts_spec.rb b/spec/ruby/core/io/puts_spec.rb
index 51240eed73..e99cffb00f 100644
--- a/spec/ruby/core/io/puts_spec.rb
+++ b/spec/ruby/core/io/puts_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#puts" do
   before :each do
diff --git a/spec/ruby/core/io/read_nonblock_spec.rb b/spec/ruby/core/io/read_nonblock_spec.rb
index 69ddc3848d..cfa1e95e7f 100644
--- a/spec/ruby/core/io/read_nonblock_spec.rb
+++ b/spec/ruby/core/io/read_nonblock_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#read_nonblock" do
   before :each do
diff --git a/spec/ruby/core/io/read_spec.rb b/spec/ruby/core/io/read_spec.rb
index 30f1b56db1..dffa79f10e 100644
--- a/spec/ruby/core/io/read_spec.rb
+++ b/spec/ruby/core/io/read_spec.rb
@@ -1,6 +1,6 @@
 # -*- encoding: utf-8 -*-
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO.read" do
   before :each do
diff --git a/spec/ruby/core/io/readbyte_spec.rb b/spec/ruby/core/io/readbyte_spec.rb
index 1cc588eea5..f7653bf3bb 100644
--- a/spec/ruby/core/io/readbyte_spec.rb
+++ b/spec/ruby/core/io/readbyte_spec.rb
@@ -1,4 +1,4 @@
-require File.expand_path('../../../spec_helper', __FILE__)
+require_relative '../../spec_helper'
 
 describe "IO#readbyte" do
   before :each do
diff --git a/spec/ruby/core/io/readchar_spec.rb b/spec/ruby/core/io/readchar_spec.rb
index 6771fcab59..74f78b5a6e 100644
--- a/spec/ruby/core/io/readchar_spec.rb
+++ b/spec/ruby/core/io/readchar_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#readchar" do
   before :each do
diff --git a/spec/ruby/core/io/readline_spec.rb b/spec/ruby/core/io/readline_spec.rb
index a1cddafe5c..f82ba36a1d 100644
--- a/spec/ruby/core/io/readline_spec.rb
+++ b/spec/ruby/core/io/readline_spec.rb
@@ -1,6 +1,6 @@
 # -*- encoding: utf-8 -*-
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#readline" do
   before :each do
diff --git a/spec/ruby/core/io/readlines_spec.rb b/spec/ruby/core/io/readlines_spec.rb
index 22ba844b52..533c9c3132 100644
--- a/spec/ruby/core/io/readlines_spec.rb
+++ b/spec/ruby/core/io/readlines_spec.rb
@@ -1,7 +1,7 @@
 # -*- encoding: utf-8 -*-
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
-require File.expand_path('../shared/readlines', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+require_relative 'shared/readlines'
 
 describe "IO#readlines" do
   before :each do
diff --git a/spec/ruby/core/io/readpartial_spec.rb b/spec/ruby/core/io/readpartial_spec.rb
index 16cb08dada..53160ca337 100644
--- a/spec/ruby/core/io/readpartial_spec.rb
+++ b/spec/ruby/core/io/readpartial_spec.rb
@@ -1,6 +1,6 @@
 # -*- encoding: ascii-8bit -*-
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#readpartial" do
   before :each do
diff --git a/spec/ruby/core/io/reopen_spec.rb b/spec/ruby/core/io/reopen_spec.rb
index 63020d5f3e..0237004edc 100644
--- a/spec/ruby/core/io/reopen_spec.rb
+++ b/spec/ruby/core/io/reopen_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 require 'fcntl'
 
diff --git a/spec/ruby/core/io/rewind_spec.rb b/spec/ruby/core/io/rewind_spec.rb
index ecf8a71891..d1ec7a69c7 100644
--- a/spec/ruby/core/io/rewind_spec.rb
+++ b/spec/ruby/core/io/rewind_spec.rb
@@ -1,6 +1,6 @@
 # -*- encoding: utf-8 -*-
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#rewind" do
   before :each do
diff --git a/spec/ruby/core/io/seek_spec.rb b/spec/ruby/core/io/seek_spec.rb
index f7e138cbe9..9978d7c0e7 100644
--- a/spec/ruby/core/io/seek_spec.rb
+++ b/spec/ruby/core/io/seek_spec.rb
@@ -1,7 +1,7 @@
 # -*- encoding: utf-8 -*-
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
-require File.expand_path('../shared/pos', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+require_relative 'shared/pos'
 
 describe "IO#seek" do
   it_behaves_like :io_set_pos, :seek
diff --git a/spec/ruby/core/io/select_spec.rb b/spec/ruby/core/io/select_spec.rb
index 7e51cd37d4..74371275c6 100644
--- a/spec/ruby/core/io/select_spec.rb
+++ b/spec/ruby/core/io/select_spec.rb
@@ -1,4 +1,4 @@
-require File.expand_path('../../../spec_helper', __FILE__)
+require_relative '../../spec_helper'
 
 describe "IO.select" do
   before :each do
diff --git a/spec/ruby/core/io/set_encoding_spec.rb b/spec/ruby/core/io/set_encoding_spec.rb
index 1d6e2a8f3b..b749331ee0 100644
--- a/spec/ruby/core/io/set_encoding_spec.rb
+++ b/spec/ruby/core/io/set_encoding_spec.rb
@@ -1,4 +1,4 @@
-require File.expand_path('../../../spec_helper', __FILE__)
+require_relative '../../spec_helper'
 
 with_feature :encoding do
   describe :io_set_encoding_write, shared: true do
diff --git a/spec/ruby/core/io/shared/binwrite.rb b/spec/ruby/core/io/shared/binwrite.rb
index 67f0fd5c86..1a88442a3b 100644
--- a/spec/ruby/core/io/shared/binwrite.rb
+++ b/spec/ruby/core/io/shared/binwrite.rb
@@ -1,4 +1,4 @@
-require File.expand_path('../../fixtures/classes', __FILE__)
+require_relative '../fixtures/classes'
 
 describe :io_binwrite, shared: true do
   before :each do
diff --git a/spec/ruby/core/io/shared/codepoints.rb b/spec/ruby/core/io/shared/codepoints.rb
index 3bb3dce939..a5062e7f79 100644
--- a/spec/ruby/core/io/shared/codepoints.rb
+++ b/spec/ruby/core/io/shared/codepoints.rb
@@ -1,5 +1,5 @@
 # -*- encoding: utf-8 -*-
-require File.expand_path('../../fixtures/classes', __FILE__)
+require_relative '../fixtures/classes'
 
 describe :io_codepoints, shared: true do
   before :each do
diff --git a/spec/ruby/core/io/shared/each.rb b/spec/ruby/core/io/shared/each.rb
index 4ef8a54147..ac01a49df1 100644
--- a/spec/ruby/core/io/shared/each.rb
+++ b/spec/ruby/core/io/shared/each.rb
@@ -1,5 +1,5 @@
 # -*- encoding: utf-8 -*-
-require File.expand_path('../../fixtures/classes', __FILE__)
+require_relative '../fixtures/classes'
 
 describe :io_each, shared: true do
   before :each do
diff --git a/spec/ruby/core/io/shared/new.rb b/spec/ruby/core/io/shared/new.rb
index 12f889f646..ea22f40090 100644
--- a/spec/ruby/core/io/shared/new.rb
+++ b/spec/ruby/core/io/shared/new.rb
@@ -1,4 +1,4 @@
-require File.expand_path('../../fixtures/classes', __FILE__)
+require_relative '../fixtures/classes'
 
 # This group of specs may ONLY contain specs that do successfully create
 # an IO instance from the file descriptor returned by #new_fd helper.
diff --git a/spec/ruby/core/io/shared/tty.rb b/spec/ruby/core/io/shared/tty.rb
index eddc5d15af..947b887f81 100644
--- a/spec/ruby/core/io/shared/tty.rb
+++ b/spec/ruby/core/io/shared/tty.rb
@@ -1,4 +1,4 @@
-require File.expand_path('../../fixtures/classes', __FILE__)
+require_relative '../fixtures/classes'
 
 describe :io_tty, shared: true do
   platform_is_not :windows do
diff --git a/spec/ruby/core/io/shared/write.rb b/spec/ruby/core/io/shared/write.rb
index fd4b0af30e..9490a848d7 100644
--- a/spec/ruby/core/io/shared/write.rb
+++ b/spec/ruby/core/io/shared/write.rb
@@ -1,5 +1,5 @@
 # encoding: utf-8
-require File.expand_path('../../fixtures/classes', __FILE__)
+require_relative '../fixtures/classes'
 
 describe :io_write, shared: true do
   before :each do
diff --git a/spec/ruby/core/io/stat_spec.rb b/spec/ruby/core/io/stat_spec.rb
index d59535843a..d46d4105ca 100644
--- a/spec/ruby/core/io/stat_spec.rb
+++ b/spec/ruby/core/io/stat_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#stat" do
   before :each do
diff --git a/spec/ruby/core/io/sync_spec.rb b/spec/ruby/core/io/sync_spec.rb
index 5cd873d799..c8c1c5a57e 100644
--- a/spec/ruby/core/io/sync_spec.rb
+++ b/spec/ruby/core/io/sync_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#sync=" do
   before :each do
diff --git a/spec/ruby/core/io/sysopen_spec.rb b/spec/ruby/core/io/sysopen_spec.rb
index f6d37de364..91f70c3ca9 100644
--- a/spec/ruby/core/io/sysopen_spec.rb
+++ b/spec/ruby/core/io/sysopen_spec.rb
@@ -1,4 +1,4 @@
-require File.expand_path('../../../spec_helper', __FILE__)
+require_relative '../../spec_helper'
 
 describe "IO.sysopen" do
   before :each do
diff --git a/spec/ruby/core/io/sysread_spec.rb b/spec/ruby/core/io/sysread_spec.rb
index bedcc31169..4062620367 100644
--- a/spec/ruby/core/io/sysread_spec.rb
+++ b/spec/ruby/core/io/sysread_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#sysread on a file" do
   before :each do
diff --git a/spec/ruby/core/io/sysseek_spec.rb b/spec/ruby/core/io/sysseek_spec.rb
index bcce968c7d..84e0a1a4ac 100644
--- a/spec/ruby/core/io/sysseek_spec.rb
+++ b/spec/ruby/core/io/sysseek_spec.rb
@@ -1,7 +1,7 @@
 # -*- encoding: utf-8 -*-
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
-require File.expand_path('../shared/pos', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+require_relative 'shared/pos'
 
 describe "IO#sysseek" do
   it_behaves_like :io_set_pos, :seek
diff --git a/spec/ruby/core/io/syswrite_spec.rb b/spec/ruby/core/io/syswrite_spec.rb
index e4936441ce..1b1477bc6e 100644
--- a/spec/ruby/core/io/syswrite_spec.rb
+++ b/spec/ruby/core/io/syswrite_spec.rb
@@ -1,6 +1,6 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
-require File.expand_path('../shared/write', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+require_relative 'shared/write'
 
 describe "IO#syswrite on a file" do
   before :each do
diff --git a/spec/ruby/core/io/tell_spec.rb b/spec/ruby/core/io/tell_spec.rb
index cc54012a37..0d6c6b02d3 100644
--- a/spec/ruby/core/io/tell_spec.rb
+++ b/spec/ruby/core/io/tell_spec.rb
@@ -1,6 +1,6 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
-require File.expand_path('../shared/pos', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+require_relative 'shared/pos'
 
 describe "IO#tell" do
   it_behaves_like :io_pos, :tell
diff --git a/spec/ruby/core/io/to_i_spec.rb b/spec/ruby/core/io/to_i_spec.rb
index bbe656cdcc..7cd9e170d2 100644
--- a/spec/ruby/core/io/to_i_spec.rb
+++ b/spec/ruby/core/io/to_i_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#to_i" do
   it "returns the numeric file descriptor of the given IO object" do
diff --git a/spec/ruby/core/io/to_io_spec.rb b/spec/ruby/core/io/to_io_spec.rb
index 76ebefb38f..55a0977740 100644
--- a/spec/ruby/core/io/to_io_spec.rb
+++ b/spec/ruby/core/io/to_io_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#to_io" do
   before :each do
diff --git a/spec/ruby/core/io/try_convert_spec.rb b/spec/ruby/core/io/try_convert_spec.rb
index 0326982ff1..cff56ba618 100644
--- a/spec/ruby/core/io/try_convert_spec.rb
+++ b/spec/ruby/core/io/try_convert_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO.try_convert" do
   before :each do
diff --git a/spec/ruby/core/io/tty_spec.rb b/spec/ruby/core/io/tty_spec.rb
index 3c1449b030..3b76c6d2b8 100644
--- a/spec/ruby/core/io/tty_spec.rb
+++ b/spec/ruby/core/io/tty_spec.rb
@@ -1,5 +1,5 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../shared/tty', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'shared/tty'
 
 describe "IO#tty?" do
   it_behaves_like :io_tty, :tty?
diff --git a/spec/ruby/core/io/ungetbyte_spec.rb b/spec/ruby/core/io/ungetbyte_spec.rb
index ee334b469b..c22661582b 100644
--- a/spec/ruby/core/io/ungetbyte_spec.rb
+++ b/spec/ruby/core/io/ungetbyte_spec.rb
@@ -1,4 +1,4 @@
-require File.expand_path('../../../spec_helper', __FILE__)
+require_relative '../../spec_helper'
 
 describe "IO#ungetbyte" do
   before :each do
diff --git a/spec/ruby/core/io/ungetc_spec.rb b/spec/ruby/core/io/ungetc_spec.rb
index 488e587f5a..7d090d0e5d 100644
--- a/spec/ruby/core/io/ungetc_spec.rb
+++ b/spec/ruby/core/io/ungetc_spec.rb
@@ -1,6 +1,6 @@
 # -*- encoding: utf-8 -*-
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
 
 describe "IO#ungetc" do
   before :each do
diff --git a/spec/ruby/core/io/write_nonblock_spec.rb b/spec/ruby/core/io/write_nonblock_spec.rb
index 751a36aade..d493289a2c 100644
--- a/spec/ruby/core/io/write_nonblock_spec.rb
+++ b/spec/ruby/core/io/write_nonblock_spec.rb
@@ -1,6 +1,6 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
-require File.expand_path('../shared/write', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+require_relative 'shared/write'
 
 # See https://bugs.ruby-lang.org/issues/5954#note-5
 platform_is_not :windows do
diff --git a/spec/ruby/core/io/write_spec.rb b/spec/ruby/core/io/write_spec.rb
index 1011efe8d5..1c48a42584 100644
--- a/spec/ruby/core/io/write_spec.rb
+++ b/spec/ruby/core/io/write_spec.rb
@@ -1,8 +1,8 @@
 # -*- encoding: utf-8 -*-
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
-require File.expand_path('../shared/write', __FILE__)
-require File.expand_path('../shared/binwrite', __FILE__)
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+require_relative 'shared/write'
+require_relative 'shared/binwrite'
 
 describe "IO#write on a file" do
   before :each do