Use ::class keyword when possible

Author: fabpot

Tests/ApplicationTest.php

@@ -738,7 +738,7 @@ public function testFindAmbiguousCommandsIfAllAlternativesAreHidden()
         $application->add(new \FooCommand());
         $application->add(new \FooHiddenCommand());
 
-        $this->assertInstanceOf('FooCommand', $application->find('foo:'));
+        $this->assertInstanceOf(\FooCommand::class, $application->find('foo:'));
     }
 
     public function testSetCatchExceptions()

Tests/Command/CommandTest.php

@@ -42,7 +42,7 @@ public function testConstructor()
 
     public function testCommandNameCannotBeEmpty()
     {
-        $this->expectException('LogicException');
+        $this->expectException(\LogicException::class);
         $this->expectExceptionMessage('The command defined in "Symfony\Component\Console\Command\Command" cannot have an empty name.');
         (new Application())->add(new Command());
     }
@@ -115,7 +115,7 @@ public function testGetNamespaceGetNameSetName()
      */
     public function testInvalidCommandNames($name)
     {
-        $this->expectException('InvalidArgumentException');
+        $this->expectException(\InvalidArgumentException::class);
         $this->expectExceptionMessage(sprintf('Command name "%s" is invalid.', $name));
 
         $command = new \TestCommand();
@@ -207,7 +207,7 @@ public function testGetHelper()
 
     public function testGetHelperWithoutHelperSet()
     {
-        $this->expectException('LogicException');
+        $this->expectException(\LogicException::class);
         $this->expectExceptionMessage('Cannot retrieve helper "formatter" because there is no HelperSet defined.');
         $command = new \TestCommand();
         $command->getHelper('formatter');
@@ -278,15 +278,15 @@ public function testRunNonInteractive()
 
     public function testExecuteMethodNeedsToBeOverridden()
     {
-        $this->expectException('LogicException');
+        $this->expectException(\LogicException::class);
         $this->expectExceptionMessage('You must override the execute() method in the concrete command class.');
         $command = new Command('foo');
         $command->run(new StringInput(''), new NullOutput());
     }
 
     public function testRunWithInvalidOption()
     {
-        $this->expectException('Symfony\Component\Console\Exception\InvalidOptionException');
+        $this->expectException(\Symfony\Component\Console\Exception\InvalidOptionException::class);
         $this->expectExceptionMessage('The "--bar" option does not exist.');
         $command = new \TestCommand();
         $tester = new CommandTester($command);