add touch file

3 files changed, 67 insertions, 4 deletions

diff --git a/lib/dslkeywords/file.rb b/lib/dslkeywords/file.rb
index 50728cb..39e0499 100644
--- a/lib/dslkeywords/file.rb
+++ b/lib/dslkeywords/file.rb
@@ -190,6 +190,23 @@ module RCM
     end
   end
 
+  # Emtpy file
+  class Touch < BaseFile
+    def is(what) = @is = validate(__method__, what.to_sym, :present, :absent, :purged, :updated)
+
+    def evaluate!
+      return unless super
+      return evaluate_absent! if %i[absent purged].include?(@is)
+
+      create_parent_directory! if @manage_directory
+      dry? "Touching #{@file_path}" do
+        return if @is != :updated && ::File.file?(@file_path)
+
+        FileUtils.touch(@file_path)
+      end
+    end
+  end
+
   class Directory < BaseFile
     def evaluate!
       return unless super
@@ -249,6 +266,16 @@ module RCM
       s
     end
 
+    def touch(file_path = nil, &block)
+      return :touch if file_path.nil?
+      return unless @conds_met
+
+      t = Touch.new(file_path)
+      t.instance_eval(&block) if block
+      self << t
+      t
+    end
+
     def directory(file_path = nil, &block)
       return :directory if file_path.nil?
       return unless @conds_met
diff --git a/test/lib/dslkeywords/directory_test.rb b/test/lib/dslkeywords/directory_test.rb
index 41229eb..9fd249f 100644
--- a/test/lib/dslkeywords/directory_test.rb
+++ b/test/lib/dslkeywords/directory_test.rb
@@ -36,16 +36,15 @@ class RCMDirectoryTest < Minitest::Test
 
   def test_purge_directory
     configure_from_scratch do
-      file create do
+      touch create do
         path "#{DIR_PATH}/subdir/a_file.txt"
         manage directory
-        'some content'
       end
       directory purge do
         path DIR_PATH
-        without backup
+        requires touch create
         is purged
-        requires file create
+        without backup
       end
     end
     refute File.directory?(DIR_PATH)
diff --git a/test/lib/dslkeywords/touch_test.rb b/test/lib/dslkeywords/touch_test.rb
new file mode 100644
index 0000000..a78b325
--- /dev/null
+++ b/test/lib/dslkeywords/touch_test.rb
@@ -0,0 +1,37 @@
+require 'minitest/autorun'
+require 'fileutils'
+
+require_relative '../../../lib/dsl'
+
+class RCMTouchTest < Minitest::Test
+  FILE_PATH = './.touch_test.rcmtmp'.freeze
+
+  Minitest.after_run do
+    File.unlink(FILE_PATH) if File.file?(FILE_PATH)
+  end
+
+  def test_touch_file
+    configure_from_scratch do
+      touch FILE_PATH
+    end
+
+    assert File.file?(FILE_PATH)
+    assert File.size(FILE_PATH).zero?
+  end
+
+  def test_touch_update_file
+    configure_from_scratch do
+      touch create do
+        path FILE_PATH
+      end
+      touch update do
+        path FILE_PATH
+        is updated
+        requires touch create
+      end
+    end
+
+    assert File.file?(FILE_PATH)
+    assert File.size(FILE_PATH).zero?
+  end
+end