tests: skip ugoira tests if ffmpeg/mkvmerge not installed.

Gemfile

@@ -37,7 +37,6 @@ gem 'httparty'
 gem 'rakismet'
 gem 'recaptcha', require: "recaptcha/rails"
 gem 'activemodel-serializers-xml'
-gem 'ptools'
 gem 'jquery-rails'
 gem 'webpacker', '>= 4.0.x'
 gem 'retriable'

Gemfile.lock

@@ -152,8 +152,6 @@ GEM
     ffaker (2.12.0)
     ffi (1.11.1)
     ffi (1.11.1-x64-mingw32)
-    ffi-win32-extensions (1.0.3)
-      ffi
     flamegraph (0.9.5)
     get_process_mem (0.2.4)
       ffi (~> 1.0)
@@ -290,9 +288,6 @@ GEM
       unicode (~> 0.4.4)
     pry-rails (0.3.9)
       pry (>= 0.10.4)
-    ptools (1.3.5)
-    ptools (1.3.5-universal-mingw32)
-      win32-file (>= 0.7.0)
     public_suffix (3.1.1)
     rack (2.0.7)
     rack-contrib (2.1.0)
@@ -440,14 +435,6 @@ GEM
     websocket-extensions (0.1.4)
     whenever (1.0.0)
       chronic (>= 0.6.3)
-    win32-file (0.8.2)
-      ffi
-      ffi-win32-extensions
-      win32-file-stat (>= 1.4.0)
-    win32-file-stat (1.5.5)
-      ffi
-      ffi-win32-extensions
-    win32console (1.3.2)
     zeitwerk (2.1.9)
 
 PLATFORMS
@@ -496,7 +483,6 @@ DEPENDENCIES
   pry-byebug
   pry-inline
   pry-rails
-  ptools
   rack-mini-profiler
   rails (~> 6.0)
   rakismet

app/logical/pixiv_ugoira_converter.rb

@@ -1,5 +1,11 @@
 class PixivUgoiraConverter
+  def self.enabled?
+    system("type -p ffmpeg > /dev/null") && system("type -p mkvmerge > /dev/null")
+  end
+
   def self.generate_webm(ugoira_file, frame_data)
+    raise NotImplementedError, "can't convert ugoira to webm: ffmpeg or mkvmerge not installed" unless enabled?
+
     folder = Zip::File.new(ugoira_file.path)
     output_file = Tempfile.new(binmode: true)
     write_path = output_file.path

test/models/upload_service_test.rb

@@ -94,16 +94,15 @@ class UploadServiceTest < ActiveSupport::TestCase
         end
 
         should "work on an ugoira url" do
-          begin
-            file = subject.get_file_for_upload(@upload)
+          skip unless PixivUgoiraConverter.enabled?
+          file = subject.get_file_for_upload(@upload)
 
-            assert_not_nil(@upload.context["ugoira"])
-            assert_operator(File.size(file.path), :>, 0)
+          assert_not_nil(@upload.context["ugoira"])
+          assert_operator(File.size(file.path), :>, 0)
 
-            file.close
-          rescue Net::OpenTimeout
-            skip "network failure"
-          end
+          file.close
+        rescue Net::OpenTimeout
+          skip "network failure"
         end
       end
     end
@@ -227,6 +226,8 @@ class UploadServiceTest < ActiveSupport::TestCase
         end
 
         should "generate a preview and a video" do
+          skip unless PixivUgoiraConverter.enabled?
+
           preview, crop, sample = subject.generate_resizes(@file, @upload)
           assert_operator(File.size(preview.path), :>, 0)
           assert_operator(File.size(crop.path), :>, 0)
@@ -454,6 +455,8 @@ class UploadServiceTest < ActiveSupport::TestCase
         end
 
         should "download the file" do
+          skip unless PixivUgoiraConverter.enabled?
+
           @service = subject.new(source: @source)
           begin
             @upload = @service.start!
@@ -848,7 +851,7 @@ class UploadServiceTest < ActiveSupport::TestCase
 
       context "a post that is replaced by a ugoira" do
         should "save the frame data" do
-          skip "ffmpeg not installed" unless check_ffmpeg
+          skip "ffmpeg not installed" unless PixivUgoiraConverter.enabled?
           begin
             as_user { @post.replace!(replacement_url: "http://www.pixiv.net/member_illust.php?mode=medium&illust_id=62247364") }
             @post.reload
@@ -871,6 +874,8 @@ class UploadServiceTest < ActiveSupport::TestCase
       context "a post that is replaced to another file then replaced back to the original file" do
         should "not delete the original files" do
           begin
+            skip unless PixivUgoiraConverter.enabled?
+
             # this is called thrice to delete the file for 62247364
             FileUtils.expects(:rm_f).times(3) 
 
@@ -910,6 +915,8 @@ class UploadServiceTest < ActiveSupport::TestCase
           # swap the images between @post1 and @post2.
           begin
             as_user do
+              skip unless PixivUgoiraConverter.enabled?
+
               @post1.replace!(replacement_url: "https://www.pixiv.net/member_illust.php?mode=medium&illust_id=62247350")
               @post2.replace!(replacement_url: "https://www.pixiv.net/member_illust.php?mode=medium&illust_id=62247364")
               assert_equal("4ceadc314938bc27f3574053a3e1459a", @post1.md5)

test/test_helpers/download_test_helper.rb

@@ -1,5 +1,3 @@
-require 'ptools'
-
 module DownloadTestHelper
   def assert_downloaded(expected_filesize, source, referer=nil)
     download = Downloads::File.new(source, referer)
@@ -33,8 +31,4 @@ module DownloadTestHelper
     res = HTTParty.head(url, Danbooru.config.httparty_options.deep_merge(headers: headers))
     assert_equal(size, res.content_length)
   end
-
-  def check_ffmpeg
-    File.which("ffmpeg") && File.which("mkvmerge")
-  end
 end