Windows: fix tmpdir?

Author: panozzaj

lib/fakefs/dir.rb

@@ -120,7 +120,11 @@ def self.open(string, &block)
     end
 
     def self.tmpdir
-      '/tmp'
+      if OS.windows?
+        'C:\Users\Admin\AppData\Local\Temp'
+      else
+        '/tmp'
+      end
     end
 
     def self.pwd

lib/fakefs/os.rb

@@ -0,0 +1,17 @@
+module OS
+  def OS.windows?
+    (/cygwin|mswin|mingw|bccwin|wince|emx/ =~ RUBY_PLATFORM) != nil
+  end
+
+  def OS.mac?
+   (/darwin/ =~ RUBY_PLATFORM) != nil
+  end
+
+  def OS.unix?
+    !OS.windows?
+  end
+
+  def OS.linux?
+    OS.unix? and not OS.mac?
+  end
+end