Refine test_argf.rb

- Make `make_tempfile` to take data to write, `binmode:` flag, and a
  block.
- Use `make_tempfile` instead of `make_tempfile0`.
- Use `File.binwrite`.

test/ruby/test_argf.rb

@@ -9,39 +9,23 @@ class TestArgf < Test::Unit::TestCase
   def setup
     @tmpdir = Dir.mktmpdir
     @tmp_count = 0
-    @t1 = make_tempfile0("argf-foo")
+    @t1 = make_tempfile("argf-foo", %w"1 2", binmode: true)
-    @t1.binmode
+    @t2 = make_tempfile("argf-bar", %w"3 4", binmode: true)
-    @t1.puts "1"
+    @t3 = make_tempfile("argf-baz", %w"5 6", binmode: true)
-    @t1.puts "2"
-    @t1.close
-    @t2 = make_tempfile0("argf-bar")
-    @t2.binmode
-    @t2.puts "3"
-    @t2.puts "4"
-    @t2.close
-    @t3 = make_tempfile0("argf-baz")
-    @t3.binmode
-    @t3.puts "5"
-    @t3.puts "6"
-    @t3.close
   end
 
   def teardown
     FileUtils.rmtree(@tmpdir)
   end
 
-  def make_tempfile0(basename)
+  def make_tempfile(basename = "argf-qux", data = %w[foo bar baz], binmode: false)
     @tmp_count += 1
-    open("#{@tmpdir}/#{basename}-#{@tmp_count}", "w")
+    path = "#{@tmpdir}/#{basename}-#{@tmp_count}"
-  end
+    File.open(path, "w") do |f|
-
+      f.binmode if binmode
-  def make_tempfile(basename = "argf-qux")
+      f.puts(*data)
-    t = make_tempfile0(basename)
+      f
-    t.puts "foo"
+    end
-    t.puts "bar"
-    t.puts "baz"
-    t.close
-    t
   end
 
   def ruby(*args, external_encoding: Encoding::UTF_8)
@@ -571,15 +555,11 @@ class TestArgf < Test::Unit::TestCase
       end
     end
 
-    t1 = open("#{@tmpdir}/argf-hoge", "w")
+    t1 = "#{@tmpdir}/argf-hoge"
-    t1.binmode
+    t2 = "#{@tmpdir}/argf-moge"
-    t1.puts "foo"
+    File.binwrite(t1, "foo\n")
-    t1.close
+    File.binwrite(t2, "bar\n")
-    t2 = open("#{@tmpdir}/argf-moge", "w")
+    ruby('-e', 'STDERR.reopen(STDOUT); ARGF.gets; ARGF.skip; p ARGF.eof?', t1, t2) do |f|
-    t2.binmode
-    t2.puts "bar"
-    t2.close
-    ruby('-e', 'STDERR.reopen(STDOUT); ARGF.gets; ARGF.skip; p ARGF.eof?', t1.path, t2.path) do |f|
       assert_equal(%w(false), f.read.split(/\n/))
     end
   end
@@ -854,7 +834,7 @@ class TestArgf < Test::Unit::TestCase
 
   def test_binmode
     bug5268 = '[ruby-core:39234]'
-    open(@t3.path, "wb") {|f| f.write "5\r\n6\r\n"}
+    File.binwrite(@t3.path, "5\r\n6\r\n")
     ruby('-e', "ARGF.binmode; STDOUT.binmode; puts ARGF.read", @t1.path, @t2.path, @t3.path) do |f|
       f.binmode
       assert_equal("1\n2\n3\n4\n5\r\n6\r\n", f.read, bug5268)
@@ -863,7 +843,7 @@ class TestArgf < Test::Unit::TestCase
 
   def test_textmode
     bug5268 = '[ruby-core:39234]'
-    open(@t3.path, "wb") {|f| f.write "5\r\n6\r\n"}
+    File.binwrite(@t3.path, "5\r\n6\r\n")
     ruby('-e', "STDOUT.binmode; puts ARGF.read", @t1.path, @t2.path, @t3.path) do |f|
       f.binmode
       assert_equal("1\n2\n3\n4\n5\n6\n", f.read, bug5268)
@@ -1142,36 +1122,28 @@ class TestArgf < Test::Unit::TestCase
   end
 
   def test_putc
-    t = make_tempfile0("argf-#{__method__}")
+    t = make_tempfile("argf-#{__method__}", 'bar')
-    t.puts 'bar'
-    t.close
     ruby('-pi-', '-e', "print ARGF.putc('x')", t.path) do |f|
     end
     assert_equal("xxbar\n", File.read(t.path))
   end
 
   def test_puts
-    t = make_tempfile0("argf-#{__method__}")
+    t = make_tempfile("argf-#{__method__}", 'bar')
-    t.puts 'bar'
-    t.close
     ruby('-pi-', '-W0', '-e', "print ARGF.puts('foo')", t.path) do |f|
     end
     assert_equal("foo\nbar\n", File.read(t.path))
   end
 
   def test_print
-    t = make_tempfile0("argf-#{__method__}")
+    t = make_tempfile("argf-#{__method__}", 'bar')
-    t.puts 'bar'
-    t.close
     ruby('-pi-', '-e', "print ARGF.print('foo')", t.path) do |f|
     end
     assert_equal("foobar\n", File.read(t.path))
   end
 
   def test_printf
-    t = make_tempfile0("argf-#{__method__}")
+    t = make_tempfile("argf-#{__method__}", 'bar')
-    t.puts 'bar'
-    t.close
     ruby('-pi-', '-e', "print ARGF.printf('%s', 'foo')", t.path) do |f|
     end
     assert_equal("foobar\n", File.read(t.path))