Update to ruby/spec@4bb0f25

* Specs added by TruffleRuby.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63654 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

spec/ruby/core/file/fixtures/file_types.rb

@@ -5,17 +5,11 @@ module FileSpecs
     @file   = tmp("test.txt")
     @dir    = Dir.pwd
     @fifo   = tmp("test_fifo")
+    @link   = tmp("test_link")
 
     platform_is_not :windows do
-      @block  = `find /dev /devices -type b 2> /dev/null`.split("\n").first
-      @char   = `{ tty || find /dev /devices -type c; } 2> /dev/null`.split("\n").last
-
-      %w[/dev /usr/bin /usr/local/bin].each do |dir|
-        links = `find #{dir} -type l 2> /dev/null`.split("\n")
-        next if links.empty?
-        @link = links.first
-        break
-      end
+      @block  = `find /dev /devices -type b 2>/dev/null`.split("\n").first
+      @char   = `{ tty || find /dev /devices -type c; } 2>/dev/null`.split("\n").last
     end
 
     @configured = true
@@ -32,24 +26,29 @@ module FileSpecs
     yield @dir
   end
 
-  # TODO: need a platform-independent helper here
   def self.fifo
-    system "mkfifo #{@fifo} 2> /dev/null"
+    File.mkfifo(@fifo)
     yield @fifo
   ensure
     rm_r @fifo
   end
 
   def self.block_device
+    raise "Could not find a block device" unless @block
     yield @block
   end
 
   def self.character_device
+    raise "Could not find a character device" unless @char
     yield @char
   end
 
   def self.symlink
+    touch(@file)
+    File.symlink(@file, @link)
     yield @link
+  ensure
+    rm_r @file, @link
   end
 
   def self.socket
@@ -57,8 +56,11 @@ module FileSpecs
     name = tmp("ftype_socket.socket")
     rm_r name
     socket = UNIXServer.new name
-    yield name
-    socket.close
-    rm_r name
+    begin
+      yield name
+    ensure
+      socket.close
+      rm_r name
+    end
   end
 end