* lib/rake: Import Rake 0.9.2

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32217 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/rake/test_rake_file_task.rb

@@ -0,0 +1,102 @@
+require File.expand_path('../helper', __FILE__)
+require 'fileutils'
+
+class TestRakeFileTask < Rake::TestCase
+  include Rake
+
+  def setup
+    super
+
+    Task.clear
+    @runs = Array.new
+    FileUtils.rm_f NEWFILE
+    FileUtils.rm_f OLDFILE
+  end
+
+  def test_file_need
+    name = "dummy"
+    file name
+
+    ftask = Task[name]
+
+    assert_equal name.to_s, ftask.name
+    File.delete(ftask.name) rescue nil
+
+    assert ftask.needed?, "file should be needed"
+
+    open(ftask.name, "w") { |f| f.puts "HI" }
+
+    assert_equal nil, ftask.prerequisites.collect{|n| Task[n].timestamp}.max
+    assert ! ftask.needed?, "file should not be needed"
+  ensure
+    File.delete(ftask.name) rescue nil
+  end
+
+  def test_file_times_new_depends_on_old
+    create_timed_files(OLDFILE, NEWFILE)
+
+    t1 = Rake.application.intern(FileTask, NEWFILE).enhance([OLDFILE])
+    t2 = Rake.application.intern(FileTask, OLDFILE)
+    assert ! t2.needed?, "Should not need to build old file"
+    assert ! t1.needed?, "Should not need to rebuild new file because of old"
+  end
+
+  def test_file_times_old_depends_on_new
+    create_timed_files(OLDFILE, NEWFILE)
+
+    t1 = Rake.application.intern(FileTask,OLDFILE).enhance([NEWFILE])
+    t2 = Rake.application.intern(FileTask, NEWFILE)
+    assert ! t2.needed?, "Should not need to build new file"
+    preq_stamp = t1.prerequisites.collect{|t| Task[t].timestamp}.max
+    assert_equal t2.timestamp, preq_stamp
+    assert t1.timestamp < preq_stamp, "T1 should be older"
+    assert t1.needed?, "Should need to rebuild old file because of new"
+  end
+
+  def test_file_depends_on_task_depend_on_file
+    create_timed_files(OLDFILE, NEWFILE)
+
+    file NEWFILE => [:obj] do |t| @runs << t.name end
+    task :obj => [OLDFILE] do |t| @runs << t.name end
+    file OLDFILE           do |t| @runs << t.name end
+
+    Task[:obj].invoke
+    Task[NEWFILE].invoke
+    assert ! @runs.include?(NEWFILE)
+  end
+
+  def test_existing_file_depends_on_non_existing_file
+    @ran = false
+
+    create_file(OLDFILE)
+    delete_file(NEWFILE)
+    file NEWFILE do
+      @ran = true
+    end
+
+    file OLDFILE => NEWFILE
+
+    Task[OLDFILE].invoke
+
+    assert @ran
+  end
+
+  # I have currently disabled this test.  I'm not convinced that
+  # deleting the file target on failure is always the proper thing to
+  # do.  I'm willing to hear input on this topic.
+  def ztest_file_deletes_on_failure
+    task :obj
+    file NEWFILE => [:obj] do |t|
+      FileUtils.touch NEWFILE
+      fail "Ooops"
+    end
+    assert Task[NEWFILE]
+    begin
+      Task[NEWFILE].invoke
+    rescue Exception
+    end
+    assert( ! File.exist?(NEWFILE), "NEWFILE should be deleted")
+  end
+
+end
+