test/test_sources.rb in pdd-0.16.1 vs test/test_sources.rb in pdd-0.16.2

@@ -21,10 +21,11 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
 require 'minitest/autorun'
 require 'pdd/sources'
+require 'fileutils'
 require 'tmpdir'
 
 # Sources test.
 # Author:: Yegor Bugayenko ([e-mail])
 # Copyright:: Copyright (c) 2014-2016 Yegor Bugayenko
@@ -36,12 +37,12 @@
       assert_equal 2, list.size
     end
   end
 
   def test_ignores_binary_files
-    in_temp(['c', 'd.png']) do |dir|
-      File.write(File.join(dir, 'd.png'), '')
+    in_temp(['c']) do |dir|
+      FileUtils.cp(File.join(Dir.pwd, '.git/index'), dir)
       list = PDD::Sources.new(dir).fetch
       assert_equal 1, list.size
     end
   end
 
@@ -68,9 +69,11 @@
     in_temp(['a/first.txt', 'b/c/d/second.txt']) do |dir|
       list = PDD::Sources.new(dir).exclude('b/c/d/second.txt').fetch
       assert_equal 1, list.size
     end
   end
+
+  private
 
   def in_temp(files)
     Dir.mktmpdir 'x' do |dir|
       files.each do |path|
         file = File.join(dir, path)