Throw exception if not instanceof ConsoleOutupuInterface

ybenhssaien · ybenhssaien · commit f4c6aa68cd40 · 2020-11-17T07:36:29.000+01:00
diff --git a/console.rst b/console.rst
@@ -196,13 +196,17 @@ which returns an instance of
         protected function execute(InputInterface $input, OutputInterface $output)
         {
             // The section() method is only available in classes that implement ConsoleOutputInterface
-            if ($output instanceof ConsoleOutputInterface) {
-                $section1 = $output->section();
-                $section2 = $output->section();
-            } else {
-                $section1 = $section2 = $output;
+            if (!$output instanceof ConsoleOutputInterface) {
+                throw new InvalidArgumentException(sprintf(
+                    'This command accepts only an instance of "%s", an instance of "%s" is given',
+                    ConsoleOutputInterface::class,
+                    \get_class($output)
+                ));
             }
-    
+
+            $section1 = $output->section();
+            $section2 = $output->section();
+
             $section1->writeln('Hello');
             $section2->writeln('World!');
             // Output displays "Hello\nWorld!\n"
