Fix race condition in test with recurring jobs getting enqueued

And affecting the result of `ReadyExecution.count`.

Author: rosa

lib/solid_queue/supervisor/forks.rb

@@ -3,7 +3,7 @@
 module SolidQueue
   class Supervisor::Forks < Supervisor
     def kind
-      "Supervisor(forks)"
+      "Supervisor(fork)"
     end
 
     private

test/integration/forked_processes_lifecycle_test.rb

@@ -211,7 +211,7 @@ def assert_registered_workers_for(*queues)
     end
 
     def assert_registered_supervisor
-      processes = find_processes_registered_as("Supervisor(forks)")
+      processes = find_processes_registered_as("Supervisor(fork)")
       assert_equal 1, processes.count
       assert_equal @pid, processes.first.pid
     end

test/integration/puma/plugin_test.rb

@@ -52,7 +52,7 @@ class PumaPluginTest < ActiveSupport::TestCase
   end
 
   test "stop puma when solid queue's supervisor dies" do
-    supervisor = find_processes_registered_as("Supervisor(forks)").first
+    supervisor = find_processes_registered_as("Supervisor(fork)").first
 
     signal_process(supervisor.pid, :KILL)
     wait_for_process_termination_with_timeout(@pid)

test/unit/supervisor_test.rb

@@ -104,8 +104,12 @@ class SupervisorTest < ActiveSupport::TestCase
     # Simnulate orphaned executions by just wiping the claiming process
     process.delete
 
-    pid = run_supervisor_as_fork
-    wait_for_registered_processes(4)
+    config_as_hash = {
+      workers: [ { queues: "background", polling_interval: 10, processes: 2 } ],
+      dispatchers: []
+    }
+    pid = run_supervisor_as_fork(load_configuration_from: config_as_hash)
+    wait_for_registered_processes(3)
     assert_registered_supervisor(pid)
 
     terminate_process(pid)
@@ -140,7 +144,7 @@ def assert_registered_dispatcher(supervisor_pid:, **metadata)
 
     def assert_registered_supervisor(pid)
       skip_active_record_query_cache do
-        processes = find_processes_registered_as("Supervisor(forks)")
+        processes = find_processes_registered_as("Supervisor(fork)")
         assert_equal 1, processes.count
         assert_nil processes.first.supervisor
         assert_equal pid, processes.first.pid