getArgumentCount example

$this->assertEquals(1, $definition->getArgumentRequiredCount(), '->getArgumentRequiredCount() returns the number of required arguments');
        $definition->addArgument($this->foo);
        $this->assertEquals(1, $definition->getArgumentRequiredCount(), '->getArgumentRequiredCount() returns the number of required arguments');
    }

    public function testGetArgumentCount()
    {
        $this->initializeArguments();

        $definition = new InputDefinition();
        $definition->addArgument($this->foo2);
        $this->assertEquals(1, $definition->getArgumentCount(), '->getArgumentCount() returns the number of arguments');
        $definition->addArgument($this->foo);
        $this->assertEquals(2, $definition->getArgumentCount(), '->getArgumentCount() returns the number of arguments');
    }

    public function testGetArgumentDefaults()
    {
        $definition = new InputDefinition([
            new InputArgument('foo1', InputArgument::OPTIONAL),
            new InputArgument('foo2', InputArgument::OPTIONAL, '', 'default'),
            new InputArgument('foo3', InputArgument::OPTIONAL | InputArgument::IS_ARRAY),
        // new InputArgument('foo4', InputArgument::OPTIONAL | InputArgument::IS_ARRAY, '', [1, 2]),

$command->setDefinition($definition = new InputDefinition([new InputArgument('bar'), new InputOption('foo')]));

        $r = new \ReflectionObject($command);
        $m = $r->getMethod('mergeApplicationDefinition');
        $m->invoke($command);
        $this->assertTrue($command->getDefinition()->hasArgument('foo'), '->mergeApplicationDefinition() merges the application arguments and the command arguments');
        $this->assertTrue($command->getDefinition()->hasArgument('bar'), '->mergeApplicationDefinition() merges the application arguments and the command arguments');
        $this->assertTrue($command->getDefinition()->hasOption('foo'), '->mergeApplicationDefinition() merges the application options and the command options');
        $this->assertTrue($command->getDefinition()->hasOption('bar'), '->mergeApplicationDefinition() merges the application options and the command options');

        $m->invoke($command);
        $this->assertEquals(3, $command->getDefinition()->getArgumentCount(), '->mergeApplicationDefinition() does not try to merge twice the application arguments and options');
    }

    public function testMergeApplicationDefinitionWithoutArgsThenWithArgsAddsArgs()
    {
        $application1 = new Application();
        $application1->getDefinition()->addArguments([new InputArgument('foo')]);
        $application1->getDefinition()->addOptions([new InputOption('bar')]);
        $command = new \TestCommand();
        $command->setApplication($application1);
        $command->setDefinition($definition = new InputDefinition([]));