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/shared/file/file.rb

@@ -0,0 +1,45 @@
+describe :file_file, shared: true do
+  before :each do
+    platform_is :windows do
+      @null = "NUL"
+      @dir  = "C:\\"
+    end
+
+    platform_is_not :windows do
+      @null = "/dev/null"
+      @dir  = "/bin"
+    end
+
+    @file = tmp("test.txt")
+    touch @file
+  end
+
+  after :each do
+    rm_r @file
+  end
+
+  it "returns true if the named file exists and is a regular file." do
+    @object.send(@method, @file).should == true
+    @object.send(@method, @dir).should == false
+  end
+
+  it "accepts an object that has a #to_path method" do
+    @object.send(@method, mock_to_path(@file)).should == true
+  end
+
+  platform_is_not :windows do
+    it "returns true if the null device exists and is a regular file." do
+      @object.send(@method, @null).should == false # May fail on MS Windows
+    end
+  end
+
+  it "raises an ArgumentError if not passed one argument" do
+    lambda { @object.send(@method)               }.should raise_error(ArgumentError)
+    lambda { @object.send(@method, @null, @file) }.should raise_error(ArgumentError)
+  end
+
+  it "raises a TypeError if not passed a String type" do
+    lambda { @object.send(@method, nil) }.should raise_error(TypeError)
+    lambda { @object.send(@method, 1)   }.should raise_error(TypeError)
+  end
+end