Leverage arrow function syntax for closure

Author: tigitz

Tests/Transport/ConnectionTest.php

@@ -175,9 +175,7 @@ public function testAck()
 
         $client = $this->createMock(PheanstalkInterface::class);
         $client->expects($this->once())->method('useTube')->with($tube)->willReturn($client);
-        $client->expects($this->once())->method('delete')->with($this->callback(function (JobId $jobId) use ($id): bool {
-            return $jobId->getId() === $id;
-        }));
+        $client->expects($this->once())->method('delete')->with($this->callback(fn (JobId $jobId): bool => $jobId->getId() === $id));
 
         $connection = new Connection(['tube_name' => $tube], $client);
 
@@ -194,9 +192,7 @@ public function testAckWhenABeanstalkdExceptionOccurs()
 
         $client = $this->createMock(PheanstalkInterface::class);
         $client->expects($this->once())->method('useTube')->with($tube)->willReturn($client);
-        $client->expects($this->once())->method('delete')->with($this->callback(function (JobId $jobId) use ($id): bool {
-            return $jobId->getId() === $id;
-        }))->willThrowException($exception);
+        $client->expects($this->once())->method('delete')->with($this->callback(fn (JobId $jobId): bool => $jobId->getId() === $id))->willThrowException($exception);
 
         $connection = new Connection(['tube_name' => $tube], $client);
 
@@ -212,9 +208,7 @@ public function testReject()
 
         $client = $this->createMock(PheanstalkInterface::class);
         $client->expects($this->once())->method('useTube')->with($tube)->willReturn($client);
-        $client->expects($this->once())->method('delete')->with($this->callback(function (JobId $jobId) use ($id): bool {
-            return $jobId->getId() === $id;
-        }));
+        $client->expects($this->once())->method('delete')->with($this->callback(fn (JobId $jobId): bool => $jobId->getId() === $id));
 
         $connection = new Connection(['tube_name' => $tube], $client);
 
@@ -231,9 +225,7 @@ public function testRejectWhenABeanstalkdExceptionOccurs()
 
         $client = $this->createMock(PheanstalkInterface::class);
         $client->expects($this->once())->method('useTube')->with($tube)->willReturn($client);
-        $client->expects($this->once())->method('delete')->with($this->callback(function (JobId $jobId) use ($id): bool {
-            return $jobId->getId() === $id;
-        }))->willThrowException($exception);
+        $client->expects($this->once())->method('delete')->with($this->callback(fn (JobId $jobId): bool => $jobId->getId() === $id))->willThrowException($exception);
 
         $connection = new Connection(['tube_name' => $tube], $client);