Add GoodJob.cli? to check if the current process was started by the…

… `good_job` executable (#1592)

lib/good_job.rb

@@ -324,6 +324,12 @@ def self.paused?(queue: nil, job_class: nil, label: nil)
   def self.paused(type = nil)
     GoodJob::Setting.paused(type)
   end
+
+  # Whether this process was initialized via the GoodJob executable (`$ good_job`)
+  # @return [Boolean]
+  def self.cli?
+    GoodJob::CLI.within_exe?
+  end
 end
 
 ActiveSupport.run_load_hooks(:good_job, GoodJob)

spec/lib/good_job_spec.rb

@@ -213,4 +213,14 @@ def perform(succeed: true)
       expect(described_class.paused).to eq({ queues: [], job_classes: [], labels: [] })
     end
   end
+
+  describe '.cli?' do
+    it 'returns true when in a CLI environment' do
+      allow(GoodJob::CLI).to receive(:within_exe?).and_return(false)
+      expect(described_class.cli?).to be false
+
+      allow(GoodJob::CLI).to receive(:within_exe?).and_return(true)
+      expect(described_class.cli?).to be true
+    end
+  end
 end