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Filename : CommandTest.php
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<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Tests\Command;

use PHPUnit\Framework\TestCase;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Helper\FormatterHelper;
use Symfony\Component\Console\Application;
use Symfony\Component\Console\Input\InputDefinition;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\StringInput;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Output\NullOutput;
use Symfony\Component\Console\Tester\CommandTester;

class CommandTest extends TestCase
{
    protected static $fixturesPath;

    public static function setUpBeforeClass()
    {
        self::$fixturesPath = __DIR__.'/../Fixtures/';
        require_once self::$fixturesPath.'/TestCommand.php';
    }

    public function testConstructor()
    {
        $command = new Command('foo:bar');
        $this->assertEquals('foo:bar', $command->getName(), '__construct() takes the command name as its first argument');
    }

    /**
     * @expectedException        \LogicException
     * @expectedExceptionMessage The command defined in "Symfony\Component\Console\Command\Command" cannot have an empty name.
     */
    public function testCommandNameCannotBeEmpty()
    {
        new Command();
    }

    public function testSetApplication()
    {
        $application = new Application();
        $command = new \TestCommand();
        $command->setApplication($application);
        $this->assertEquals($application, $command->getApplication(), '->setApplication() sets the current application');
        $this->assertEquals($application->getHelperSet(), $command->getHelperSet());
    }

    public function testSetApplicationNull()
    {
        $command = new \TestCommand();
        $command->setApplication(null);
        $this->assertNull($command->getHelperSet());
    }

    public function testSetGetDefinition()
    {
        $command = new \TestCommand();
        $ret = $command->setDefinition($definition = new InputDefinition());
        $this->assertEquals($command, $ret, '->setDefinition() implements a fluent interface');
        $this->assertEquals($definition, $command->getDefinition(), '->setDefinition() sets the current InputDefinition instance');
        $command->setDefinition(array(new InputArgument('foo'), new InputOption('bar')));
        $this->assertTrue($command->getDefinition()->hasArgument('foo'), '->setDefinition() also takes an array of InputArguments and InputOptions as an argument');
        $this->assertTrue($command->getDefinition()->hasOption('bar'), '->setDefinition() also takes an array of InputArguments and InputOptions as an argument');
        $command->setDefinition(new InputDefinition());
    }

    public function testAddArgument()
    {
        $command = new \TestCommand();
        $ret = $command->addArgument('foo');
        $this->assertEquals($command, $ret, '->addArgument() implements a fluent interface');
        $this->assertTrue($command->getDefinition()->hasArgument('foo'), '->addArgument() adds an argument to the command');
    }

    public function testAddOption()
    {
        $command = new \TestCommand();
        $ret = $command->addOption('foo');
        $this->assertEquals($command, $ret, '->addOption() implements a fluent interface');
        $this->assertTrue($command->getDefinition()->hasOption('foo'), '->addOption() adds an option to the command');
    }

    public function testSetHidden()
    {
        $command = new \TestCommand();
        $command->setHidden(true);
        $this->assertTrue($command->isHidden());
    }

    public function testGetNamespaceGetNameSetName()
    {
        $command = new \TestCommand();
        $this->assertEquals('namespace:name', $command->getName(), '->getName() returns the command name');
        $command->setName('foo');
        $this->assertEquals('foo', $command->getName(), '->setName() sets the command name');

        $ret = $command->setName('foobar:bar');
        $this->assertEquals($command, $ret, '->setName() implements a fluent interface');
        $this->assertEquals('foobar:bar', $command->getName(), '->setName() sets the command name');
    }

    /**
     * @dataProvider provideInvalidCommandNames
     */
    public function testInvalidCommandNames($name)
    {
        if (method_exists($this, 'expectException')) {
            $this->expectException('InvalidArgumentException');
            $this->expectExceptionMessage(sprintf('Command name "%s" is invalid.', $name));
        } else {
            $this->setExpectedException('InvalidArgumentException', sprintf('Command name "%s" is invalid.', $name));
        }

        $command = new \TestCommand();
        $command->setName($name);
    }

    public function provideInvalidCommandNames()
    {
        return array(
            array(''),
            array('foo:'),
        );
    }

    public function testGetSetDescription()
    {
        $command = new \TestCommand();
        $this->assertEquals('description', $command->getDescription(), '->getDescription() returns the description');
        $ret = $command->setDescription('description1');
        $this->assertEquals($command, $ret, '->setDescription() implements a fluent interface');
        $this->assertEquals('description1', $command->getDescription(), '->setDescription() sets the description');
    }

    public function testGetSetHelp()
    {
        $command = new \TestCommand();
        $this->assertEquals('help', $command->getHelp(), '->getHelp() returns the help');
        $ret = $command->setHelp('help1');
        $this->assertEquals($command, $ret, '->setHelp() implements a fluent interface');
        $this->assertEquals('help1', $command->getHelp(), '->setHelp() sets the help');
        $command->setHelp('');
        $this->assertEquals('', $command->getHelp(), '->getHelp() does not fall back to the description');
    }

    public function testGetProcessedHelp()
    {
        $command = new \TestCommand();
        $command->setHelp('The %command.name% command does... Example: php %command.full_name%.');
        $this->assertContains('The namespace:name command does...', $command->getProcessedHelp(), '->getProcessedHelp() replaces %command.name% correctly');
        $this->assertNotContains('%command.full_name%', $command->getProcessedHelp(), '->getProcessedHelp() replaces %command.full_name%');

        $command = new \TestCommand();
        $command->setHelp('');
        $this->assertContains('description', $command->getProcessedHelp(), '->getProcessedHelp() falls back to the description');
    }

    public function testGetSetAliases()
    {
        $command = new \TestCommand();
        $this->assertEquals(array('name'), $command->getAliases(), '->getAliases() returns the aliases');
        $ret = $command->setAliases(array('name1'));
        $this->assertEquals($command, $ret, '->setAliases() implements a fluent interface');
        $this->assertEquals(array('name1'), $command->getAliases(), '->setAliases() sets the aliases');
    }

    public function testSetAliasesNull()
    {
        $command = new \TestCommand();
        $this->{method_exists($this, $_ = 'expectException') ? $_ : 'setExpectedException'}('InvalidArgumentException');
        $command->setAliases(null);
    }

    public function testGetSynopsis()
    {
        $command = new \TestCommand();
        $command->addOption('foo');
        $command->addArgument('bar');
        $this->assertEquals('namespace:name [--foo] [--] [<bar>]', $command->getSynopsis(), '->getSynopsis() returns the synopsis');
    }

    public function testAddGetUsages()
    {
        $command = new \TestCommand();
        $command->addUsage('foo1');
        $command->addUsage('foo2');
        $this->assertContains('namespace:name foo1', $command->getUsages());
        $this->assertContains('namespace:name foo2', $command->getUsages());
    }

    public function testGetHelper()
    {
        $application = new Application();
        $command = new \TestCommand();
        $command->setApplication($application);
        $formatterHelper = new FormatterHelper();
        $this->assertEquals($formatterHelper->getName(), $command->getHelper('formatter')->getName(), '->getHelper() returns the correct helper');
    }

    /**
     * @expectedException        \LogicException
     * @expectedExceptionMessage Cannot retrieve helper "formatter" because there is no HelperSet defined.
     */
    public function testGetHelperWithoutHelperSet()
    {
        $command = new \TestCommand();
        $command->getHelper('formatter');
    }

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

        $r = new \ReflectionObject($command);
        $m = $r->getMethod('mergeApplicationDefinition');
        $m->setAccessible(true);
        $m->invoke($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(array(new InputArgument('foo')));
        $application1->getDefinition()->addOptions(array(new InputOption('bar')));
        $command = new \TestCommand();
        $command->setApplication($application1);
        $command->setDefinition($definition = new InputDefinition(array()));

        $r = new \ReflectionObject($command);
        $m = $r->getMethod('mergeApplicationDefinition');
        $m->setAccessible(true);
        $m->invoke($command, false);
        $this->assertTrue($command->getDefinition()->hasOption('bar'), '->mergeApplicationDefinition(false) merges the application and the command options');
        $this->assertFalse($command->getDefinition()->hasArgument('foo'), '->mergeApplicationDefinition(false) does not merge the application arguments');

        $m->invoke($command, true);
        $this->assertTrue($command->getDefinition()->hasArgument('foo'), '->mergeApplicationDefinition(true) merges the application arguments and the command arguments');

        $m->invoke($command);
        $this->assertEquals(2, $command->getDefinition()->getArgumentCount(), '->mergeApplicationDefinition() does not try to merge twice the application arguments');
    }

    public function testRunInteractive()
    {
        $tester = new CommandTester(new \TestCommand());

        $tester->execute(array(), array('interactive' => true));

        $this->assertEquals('interact called'.PHP_EOL.'execute called'.PHP_EOL, $tester->getDisplay(), '->run() calls the interact() method if the input is interactive');
    }

    public function testRunNonInteractive()
    {
        $tester = new CommandTester(new \TestCommand());

        $tester->execute(array(), array('interactive' => false));

        $this->assertEquals('execute called'.PHP_EOL, $tester->getDisplay(), '->run() does not call the interact() method if the input is not interactive');
    }

    /**
     * @expectedException        \LogicException
     * @expectedExceptionMessage You must override the execute() method in the concrete command class.
     */
    public function testExecuteMethodNeedsToBeOverridden()
    {
        $command = new Command('foo');
        $command->run(new StringInput(''), new NullOutput());
    }

    /**
     * @expectedException        \Symfony\Component\Console\Exception\InvalidOptionException
     * @expectedExceptionMessage The "--bar" option does not exist.
     */
    public function testRunWithInvalidOption()
    {
        $command = new \TestCommand();
        $tester = new CommandTester($command);
        $tester->execute(array('--bar' => true));
    }

    public function testRunReturnsIntegerExitCode()
    {
        $command = new \TestCommand();
        $exitCode = $command->run(new StringInput(''), new NullOutput());
        $this->assertSame(0, $exitCode, '->run() returns integer exit code (treats null as 0)');

        $command = $this->getMockBuilder('TestCommand')->setMethods(array('execute'))->getMock();
        $command->expects($this->once())
            ->method('execute')
            ->will($this->returnValue('2.3'));
        $exitCode = $command->run(new StringInput(''), new NullOutput());
        $this->assertSame(2, $exitCode, '->run() returns integer exit code (casts numeric to int)');
    }

    public function testRunWithApplication()
    {
        $command = new \TestCommand();
        $command->setApplication(new Application());
        $exitCode = $command->run(new StringInput(''), new NullOutput());

        $this->assertSame(0, $exitCode, '->run() returns an integer exit code');
    }

    public function testRunReturnsAlwaysInteger()
    {
        $command = new \TestCommand();

        $this->assertSame(0, $command->run(new StringInput(''), new NullOutput()));
    }

    public function testRunWithProcessTitle()
    {
        $command = new \TestCommand();
        $command->setApplication(new Application());
        $command->setProcessTitle('foo');
        $this->assertSame(0, $command->run(new StringInput(''), new NullOutput()));
        if (function_exists('cli_set_process_title')) {
            if (null === @cli_get_process_title() && 'Darwin' === PHP_OS) {
                $this->markTestSkipped('Running "cli_get_process_title" as an unprivileged user is not supported on MacOS.');
            }
            $this->assertEquals('foo', cli_get_process_title());
        }
    }

    public function testSetCode()
    {
        $command = new \TestCommand();
        $ret = $command->setCode(function (InputInterface $input, OutputInterface $output) {
            $output->writeln('from the code...');
        });
        $this->assertEquals($command, $ret, '->setCode() implements a fluent interface');
        $tester = new CommandTester($command);
        $tester->execute(array());
        $this->assertEquals('interact called'.PHP_EOL.'from the code...'.PHP_EOL, $tester->getDisplay());
    }

    public function getSetCodeBindToClosureTests()
    {
        return array(
            array(true, 'not bound to the command'),
            array(false, 'bound to the command'),
        );
    }

    /**
     * @dataProvider getSetCodeBindToClosureTests
     */
    public function testSetCodeBindToClosure($previouslyBound, $expected)
    {
        $code = createClosure();
        if ($previouslyBound) {
            $code = $code->bindTo($this);
        }

        $command = new \TestCommand();
        $command->setCode($code);
        $tester = new CommandTester($command);
        $tester->execute(array());
        $this->assertEquals('interact called'.PHP_EOL.$expected.PHP_EOL, $tester->getDisplay());
    }

    public function testSetCodeWithStaticClosure()
    {
        $command = new \TestCommand();
        $command->setCode(self::createClosure());
        $tester = new CommandTester($command);
        $tester->execute(array());

        if (\PHP_VERSION_ID < 70000) {
            // Cannot bind static closures in PHP 5
            $this->assertEquals('interact called'.PHP_EOL.'not bound'.PHP_EOL, $tester->getDisplay());
        } else {
            // Can bind static closures in PHP 7
            $this->assertEquals('interact called'.PHP_EOL.'bound'.PHP_EOL, $tester->getDisplay());
        }
    }

    private static function createClosure()
    {
        return function (InputInterface $input, OutputInterface $output) {
            $output->writeln(isset($this) ? 'bound' : 'not bound');
        };
    }

    public function testSetCodeWithNonClosureCallable()
    {
        $command = new \TestCommand();
        $ret = $command->setCode(array($this, 'callableMethodCommand'));
        $this->assertEquals($command, $ret, '->setCode() implements a fluent interface');
        $tester = new CommandTester($command);
        $tester->execute(array());
        $this->assertEquals('interact called'.PHP_EOL.'from the code...'.PHP_EOL, $tester->getDisplay());
    }

    public function callableMethodCommand(InputInterface $input, OutputInterface $output)
    {
        $output->writeln('from the code...');
    }
}

// In order to get an unbound closure, we should create it outside a class
// scope.
function createClosure()
{
    return function (InputInterface $input, OutputInterface $output) {
        $output->writeln($this instanceof Command ? 'bound to the command' : 'not bound to the command');
    };
}