Move spec/rubyspec to spec/ruby for consistency

* Other ruby implementations use the spec/ruby directory.
  [Misc #13792] [ruby-core:82287]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

spec/ruby/core/file/birthtime_spec.rb

@@ -0,0 +1,56 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "File.birthtime" do
+  before :each do
+    @file = __FILE__
+  end
+
+  after :each do
+    @file = nil
+  end
+
+  platform_is :windows, :darwin, :freebsd, :netbsd do
+    it "returns the birth time for the named file as a Time object" do
+      File.birthtime(@file)
+      File.birthtime(@file).should be_kind_of(Time)
+    end
+
+    it "accepts an object that has a #to_path method" do
+      File.birthtime(mock_to_path(@file))
+    end
+
+    it "raises an Errno::ENOENT exception if the file is not found" do
+      lambda { File.birthtime('bogus') }.should raise_error(Errno::ENOENT)
+    end
+  end
+
+  platform_is :linux, :openbsd do
+    it "raises an NotImplementedError" do
+      lambda { File.birthtime(@file) }.should raise_error(NotImplementedError)
+    end
+  end
+end
+
+describe "File#birthtime" do
+  before :each do
+    @file = File.open(__FILE__)
+  end
+
+  after :each do
+    @file.close
+    @file = nil
+  end
+
+  platform_is :windows, :darwin, :freebsd, :netbsd do
+    it "returns the birth time for self" do
+      @file.birthtime
+      @file.birthtime.should be_kind_of(Time)
+    end
+  end
+
+  platform_is :linux, :openbsd do
+    it "raises an NotImplementedError" do
+      lambda { @file.birthtime }.should raise_error(NotImplementedError)
+    end
+  end
+end