Test QueueHealth command

app/Console/Commands/QueueHealth.php

@@ -73,7 +73,7 @@ public function handle()
             return 1;
         }
 
-        echo "The queue has $queueSize items, and is processing.";
+        $this->line("The queue has $queueSize items, and is processing.");
 
         return 0;
     }

tests/Feature/QueueHealthTest.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace Tests\Feature;
+
+use Illuminate\Support\Facades\Cache;
+use Tests\TestCase;
+
+class QueueHealthTest extends TestCase
+{
+    /** @test */
+    function queue_is_healthy_when_empty()
+    {
+        $mock = $this->createMock(\Illuminate\Contracts\Queue\Queue::class);
+        $mock->method('size')->willReturn(0);
+        $this->app->instance(\Illuminate\Contracts\Queue\Queue::class, $mock);
+
+        $this->artisan('queue:health')->assertExitCode(0);
+    }
+
+    /** @test */
+    function queue_is_healthy_when_a_job_was_recently_processed()
+    {
+        Cache::forever('queue.job.last-processed', \Carbon\Carbon::now());
+
+        $mock = $this->createMock(\Illuminate\Contracts\Queue\Queue::class);
+        $mock->method('size')->willReturn(1);
+        $this->app->instance(\Illuminate\Contracts\Queue\Queue::class, $mock);
+
+        $this->artisan('queue:health')->assertExitCode(0);
+    }
+
+    /** @test */
+    function queue_is_unhealthy_when_a_job_was_not_recently_processed()
+    {
+        Cache::forever('queue.job.last-processed', \Carbon\Carbon::now()->subHour());
+
+        $mock = $this->createMock(\Illuminate\Contracts\Queue\Queue::class);
+        $mock->method('size')->willReturn(1);
+        $this->app->instance(\Illuminate\Contracts\Queue\Queue::class, $mock);
+
+        $this->artisan('queue:health')->assertExitCode(1);
+    }
+}