Add basic async test case

Author: Vectorial1024

src/AsyncTask.php

@@ -70,7 +70,7 @@ public function start(): void
     {
         // assume unix for now
         $serializedTask = $this->toBase64Serial();
-        $this->theTask = Process::quietly()->start("php artisan async:run $serializedTask");
+        $this->runnerProcess = Process::quietly()->start("php artisan async:run $serializedTask");
     }
 
     /**

tests/AsyncTaskTest.php

@@ -6,6 +6,8 @@
 
 class AsyncTaskTest extends BaseTestCase
 {
+    // directly running the runner 
+
     public function testCanRunClosure()
     {
         // tests that our AsyncTask can run closures correctly.
@@ -39,4 +41,30 @@ public function testCanRunInterface()
 
         unlink($testFileName);
     }
+
+    // ---------
+
+    // integration test with the cli artisan via a mocked artisan file, which tests various features of this library
+
+    public function testAsyncBasic()
+    {
+        // tests that we can dispatch async tasks to the cli artisan
+        $testFileName = $this->getStoragePath("testAsyncBasic.txt");
+        $message = "Hello world!";
+        $task = new AsyncTask(function () use ($testFileName, $message) {
+            $fp = fopen($testFileName, "w");
+            fwrite($fp, $message);
+            fflush($fp);
+            fclose($fp);
+        });
+        $task->start();
+
+        // sleep a bit to wait for the async
+        sleep(1);
+
+        $this->assertFileExists($testFileName);
+        $this->assertStringEqualsFile($testFileName, $message);
+
+        unlink($testFileName);
+    }
 }