Added specs for copy file.

.autotest

@@ -1,7 +1,8 @@
 Autotest.add_hook :initialize do |at|
   at.clear_mappings
   at.add_exception(/\.git/)
+  at.add_exception(/spec\/sandbox/)
   at.add_mapping(%r{^spec/.*_spec}) {|filename,_| at.files_matching %r{#{filename}}}
   at.add_mapping(%r{^bin/thor}) {|_,_| at.files_matching %r{spec/thor_runner_spec}}
   at.add_mapping(%r{}) {|_,_| at.files_matching %r{spec/.*_spec}}
-end
+end

lib/thor/actions/copy_file.rb

@@ -5,7 +5,7 @@ module Actions
     # destination root respectively.
     #
     def copy_file(source, destination=nil)
-      action CopyFile.new(source, destination || source)
+      action CopyFile.new(self, source, destination || source)
     end
 
     class CopyFile #:nodoc:

spec/actions/copy_file_spec.rb

@@ -0,0 +1,71 @@
+require File.expand_path(File.dirname(__FILE__) + '/../spec_helper')
+require 'thor/actions'
+
+describe Thor::Actions::CopyFile do
+  before(:each) do
+    ::FileUtils.rm_r(destination_root, :force => true)
+  end
+
+  def copy_file(source, destination=nil)
+    @base ||= begin
+      base = Object.new
+      mock(base).source_root{ source_root }
+      mock(base).destination_root{ destination_root }
+      base
+    end
+
+    @action ||= Thor::Actions::CopyFile.new(base, source, destination || source)
+  end
+
+  describe "#source" do
+    it "sets the source based on the source root" do
+      copy_file("task.thor").source.must == File.join(source_root, 'task.thor')
+    end
+  end
+
+  describe "#destination" do
+    it "sets the destination based on the destinatino root" do
+      copy_file("task.thor").destination.must == File.join(destination_root, 'task.thor')
+    end
+  end
+
+  describe "#invoke!" do
+    it "copies the file to the destination root" do
+      copy_file("task.thor").invoke!
+      File.exists?(@action.destination).must be_true
+      FileUtils.identical?(@action.source, @action.destination).must be_true
+    end
+  end
+
+  describe "#revoke!" do
+    it "removes the destination file" do
+      copy_file("task.thor").invoke!
+      @action.revoke!
+      File.exists?(@action.destination).must be_false
+    end
+  end
+
+  describe "#show" do
+    it "shows file content" do
+      copy_file("task.thor").show.must == File.read(File.join(source_root, "task.thor"))
+    end
+  end
+
+  describe "#exists?" do
+    it "returns true if the destination file exists" do
+      copy_file("task.thor")
+      @action.exists?.must be_false
+      @action.invoke!
+      @action.exists?.must be_true
+    end
+  end
+
+  describe "#identical?" do
+    it "returns true if the destination file and is identical" do
+      copy_file("task.thor")
+      @action.identical?.must be_false
+      @action.invoke!
+      @action.identical?.must be_true
+    end
+  end
+end

spec/spec_helper.rb

@@ -3,7 +3,6 @@
 $:.push File.expand_path(File.join(File.dirname(__FILE__), '..', 'lib'))
 
 require 'thor'
-require 'thor/group'
 require 'stringio'
 require 'rubygems'
 require 'rr'
@@ -42,5 +41,13 @@ def capture(stream)
     result
   end
 
+  def source_root
+    File.join(File.dirname(__FILE__), 'fixtures')
+  end
+
+  def destination_root
+    File.join(File.dirname(__FILE__), 'sandbox')
+  end
+
   alias silence capture
 end

task.thor

@@ -7,7 +7,7 @@ class Amazing < Thor
     ret = "#{name} is amazing"
     puts options[:forcefully] ? ret.upcase : ret
   end
-  
+
   desc "hello", "say hello"
   def hello
     puts "Hello"