Make `restart` and `dev:cache` tasks work when customizing pid file path

Originally, it hard-coded pid file path. It can not be removed when customizing
pid file path.
But rake task can not get pid file path. Therefore, do not remove file in rake
task, makes it possible to judge whether it is restart from the argument of the
command and removes the file in server command.

Fixes #29306

1 files changed, 8 insertions, 4 deletions

diff --git a/railties/test/application/rake/dev_test.rb b/railties/test/application/rake/dev_test.rb
index d56f315455..b25593ee1c 100644
--- a/railties/test/application/rake/dev_test.rb
+++ b/railties/test/application/rake/dev_test.rb
@@ -32,12 +32,16 @@ module ApplicationTests
         end
       end
 
-      test "dev:cache removes server.pid also" do
+      test "dev:cache touches tmp/restart.txt" do
         Dir.chdir(app_path) do
-          FileUtils.mkdir_p("tmp/pids")
-          FileUtils.touch("tmp/pids/server.pid")
           `rails dev:cache`
-          assert_not File.exist?("tmp/pids/server.pid")
+          assert File.exist?("tmp/restart.txt")
+
+          prev_mtime = File.mtime("tmp/restart.txt")
+          sleep(1)
+          `rails dev:cache`
+          curr_mtime = File.mtime("tmp/restart.txt")
+          assert_not_equal prev_mtime, curr_mtime
         end
       end
     end