Use File.write instead of Kernel#open

bootstraptest/runner.rb

@@ -704,9 +704,7 @@ def assert_normal_exit(testsrc, *rest, timeout: BT.timeout, **opt)
       timeout_signaled = false
       logfile = "assert_normal_exit.#{as.path}.#{as.lineno}.log"
 
-      begin
+      io = IO.popen("#{BT.ruby} -W0 #{filename}", err: logfile)
-        err = open(logfile, "w")
-        io = IO.popen("#{BT.ruby} -W0 #{filename}", err: err)
       pid = io.pid
       th = Thread.new {
         io.read
@@ -718,9 +716,7 @@ def assert_normal_exit(testsrc, *rest, timeout: BT.timeout, **opt)
         timeout_signaled = true
       end
       status = th.value
-      ensure
+
-        err.close
-      end
       if status && status.signaled?
         signo = status.termsig
         signame = Signal.list.invert[signo]

bootstraptest/test_autoload.rb

@@ -11,7 +11,7 @@ assert_equal 'ok', %q{
 }, '[ruby-dev:43816]'
 
 assert_equal 'ok', %q{
-  open('zzz2.rb', 'w') {|f| f.puts '' }
+  File.write('zzz2.rb', '')
   instance_eval do
     autoload :ZZZ, './zzz2.rb'
     begin
@@ -23,7 +23,7 @@ assert_equal 'ok', %q{
 }, '[ruby-dev:43816]'
 
 assert_equal 'ok', %q{
-  open('zzz3.rb', 'w') {|f| f.puts 'class ZZZ; def self.ok;:ok;end;end'}
+  File.write('zzz3.rb', "class ZZZ; def self.ok;:ok;end;end\n")
   instance_eval do
     autoload :ZZZ, './zzz3.rb'
     ZZZ.ok
@@ -31,20 +31,20 @@ assert_equal 'ok', %q{
 }, '[ruby-dev:43816]'
 
 assert_equal 'ok', %q{
-  open("zzz4.rb", "w") {|f| f.puts "class ZZZ; def self.ok;:ok;end;end"}
+  File.write("zzz4.rb", "class ZZZ; def self.ok;:ok;end;end\n")
   autoload :ZZZ, "./zzz4.rb"
   ZZZ.ok
 }
 
 assert_equal 'ok', %q{
-  open("zzz5.rb", "w") {|f| f.puts "class ZZZ; def self.ok;:ok;end;end"}
+  File.write("zzz5.rb", "class ZZZ; def self.ok;:ok;end;end\n")
   autoload :ZZZ, "./zzz5.rb"
   require "./zzz5.rb"
   ZZZ.ok
 }
 
 assert_equal 'okok', %q{
-  open("zzz6.rb", "w") {|f| f.puts "class ZZZ; def self.ok;:ok;end;end"}
+  File.write("zzz6.rb", "class ZZZ; def self.ok;:ok;end;end\n")
   autoload :ZZZ, "./zzz6.rb"
   t1 = Thread.new {ZZZ.ok}
   t2 = Thread.new {ZZZ.ok}
@@ -60,7 +60,7 @@ assert_finish 5, %q{
 }, '[ruby-core:21696]'
 
 assert_equal 'A::C', %q{
-  open("zzz7.rb", "w") {}
+  File.write("zzz7.rb", "")
   class A
     autoload :C, "./zzz7"
     class C

bootstraptest/test_io.rb

@@ -91,7 +91,7 @@ assert_normal_exit %q{
     at_exit { p :foo }
 
     megacontent = "abc" * 12345678
-    #File.open("megasrc", "w") {|f| f << megacontent }
+    #File.write("megasrc", megacontent)
 
     t0 = Thread.main
     Thread.new { sleep 0.001 until t0.stop?; Process.kill(:INT, $$) }

bootstraptest/test_load.rb

@@ -1,9 +1,9 @@
 assert_equal 'ok', %q{
-  open("require-lock-test.rb", "w") {|f|
+  File.write("require-lock-test.rb", <<-END)
-    f.puts "sleep 0.1"
+    sleep 0.1
-    f.puts "module M"
+    module M
-    f.puts "end"
+    end
-  }
+  END
   $:.unshift Dir.pwd
   vs = (1..2).map {|i|
     Thread.start {
@@ -16,7 +16,7 @@ assert_equal 'ok', %q{
 
 assert_equal 'ok', %q{
   %w[a a/foo b].each {|d| Dir.mkdir(d)}
-  open("b/foo", "w") {|f| f.puts "$ok = :ok"}
+  File.write("b/foo", "$ok = :ok\n")
   $:.replace(%w[a b])
   begin
     load "foo"

bootstraptest/test_thread.rb

@@ -257,8 +257,7 @@ assert_equal 'true', %{
 }
 
 assert_equal 'ok', %{
-  open("zzz_t1.rb", "w") do |f|
+  File.write("zzz_t1.rb", <<-END)
-    f.puts <<-END
       begin
         Thread.new { fork { GC.start } }.join
         pid, status = Process.wait2
@@ -267,7 +266,6 @@ assert_equal 'ok', %{
         $result = :ok
       end
     END
-  end
   require "./zzz_t1.rb"
   $result
 }
@@ -422,8 +420,7 @@ assert_equal 'ok', %q{
 }
 
 assert_equal 'ok', %{
-  open("zzz_t2.rb", "w") do |f|
+  File.write("zzz_t2.rb", <<-'end;') # do
-    f.puts <<-'end;' # do
       begin
         m = Thread::Mutex.new
         parent = Thread.current
@@ -445,7 +442,6 @@ assert_equal 'ok', %{
         $result = :ok
       end
     end;
-  end
   require "./zzz_t2.rb"
   $result
 }