[10.x] Add assertCount test helper (#49609)

* Add assertCount method

* apply StyleCI

* Update QueueFake.php

---------

Co-authored-by: Taylor Otwell <taylor@laravel.com>

src/Illuminate/Support/Testing/Fakes/QueueFake.php

@@ -278,6 +278,22 @@ public function assertNotPushed($job, $callback = null)
         );
     }
 
+    /**
+     * Assert the total count of jobs that were pushed.
+     *
+     * @param  int  $expectedCount
+     * @return void
+     */
+    public function assertCount($expectedCount)
+    {
+        $actualCount = collect($this->jobs)->flatten(1)->count();
+
+        PHPUnit::assertSame(
+            $expectedCount, $actualCount,
+            "Expected {$expectedCount} jobs to be pushed, but found {$actualCount} instead."
+        );
+    }
+
     /**
      * Assert that no jobs were pushed.
      *

tests/Support/SupportTestingQueueFakeTest.php

@@ -176,6 +176,18 @@ public function testAssertPushedTimes()
         $this->fake->assertPushed(JobStub::class, 2);
     }
 
+    public function testAssertCount()
+    {
+        $this->fake->push(function () {
+            // Do nothing
+        });
+
+        $this->fake->push($this->job);
+        $this->fake->push($this->job);
+
+        $this->fake->assertCount(3);
+    }
+
     public function testAssertNothingPushed()
     {
         $this->fake->assertNothingPushed();