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Filename : ShellTest.php
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<?php

/*
 * This file is part of Psy Shell.
 *
 * (c) 2012-2017 Justin Hileman
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Psy\Test;

use Psy\Configuration;
use Psy\Exception\ErrorException;
use Psy\Exception\ParseErrorException;
use Psy\Shell;
use Psy\TabCompletion\Matcher\ClassMethodsMatcher;
use Symfony\Component\Console\Output\StreamOutput;

class ShellTest extends \PHPUnit_Framework_TestCase
{
    private $streams = array();

    public function tearDown()
    {
        foreach ($this->streams as $stream) {
            fclose($stream);
        }
    }

    public function testScopeVariables()
    {
        $one       = 'banana';
        $two       = 123;
        $three     = new \StdClass();
        $__psysh__ = 'ignore this';
        $_         = 'ignore this';
        $_e        = 'ignore this';

        $shell = new Shell($this->getConfig());
        $shell->setScopeVariables(compact('one', 'two', 'three', '__psysh__', '_', '_e', 'this'));

        $this->assertNotContains('__psysh__', $shell->getScopeVariableNames());
        $this->assertEquals(array('one', 'two', 'three', '_'), $shell->getScopeVariableNames());
        $this->assertEquals('banana', $shell->getScopeVariable('one'));
        $this->assertEquals(123, $shell->getScopeVariable('two'));
        $this->assertSame($three, $shell->getScopeVariable('three'));
        $this->assertNull($shell->getScopeVariable('_'));

        $shell->setScopeVariables(array());
        $this->assertEquals(array('_'), $shell->getScopeVariableNames());

        $shell->setBoundObject($this);
        $this->assertEquals(array('_', 'this'), $shell->getScopeVariableNames());
        $this->assertSame($this, $shell->getScopeVariable('this'));
        $this->assertEquals(array('_' => null), $shell->getScopeVariables(false));
        $this->assertEquals(array('_' => null, 'this' => $this), $shell->getScopeVariables());
    }

    /**
     * @expectedException \InvalidArgumentException
     */
    public function testUnknownScopeVariablesThrowExceptions()
    {
        $shell = new Shell($this->getConfig());
        $shell->setScopeVariables(array('foo' => 'FOO', 'bar' => 1));
        $shell->getScopeVariable('baz');
    }

    public function testIncludes()
    {
        $config = $this->getConfig(array('configFile' => __DIR__ . '/../../fixtures/empty.php'));

        $shell = new Shell($config);
        $this->assertEmpty($shell->getIncludes());
        $shell->setIncludes(array('foo', 'bar', 'baz'));
        $this->assertEquals(array('foo', 'bar', 'baz'), $shell->getIncludes());
    }

    public function testIncludesConfig()
    {
        $config = $this->getConfig(array(
            'defaultIncludes' => array('/file.php'),
            'configFile'      => __DIR__ . '/../../fixtures/empty.php',
        ));

        $shell = new Shell($config);

        $includes = $shell->getIncludes();
        $this->assertEquals('/file.php', $includes[0]);
    }

    public function testAddMatchersViaConfig()
    {
        $config = $this->getConfig(array(
            'tabCompletionMatchers' => array(
                new ClassMethodsMatcher(),
            ),
        ));

        $matchers = $config->getTabCompletionMatchers();

        $this->assertTrue(array_pop($matchers) instanceof ClassMethodsMatcher);
    }

    public function testRenderingExceptions()
    {
        $shell  = new Shell($this->getConfig());
        $output = $this->getOutput();
        $stream = $output->getStream();
        $e      = new ParseErrorException('message', 13);

        $shell->setOutput($output);
        $shell->addCode('code');
        $this->assertTrue($shell->hasCode());
        $this->assertNotEmpty($shell->getCodeBuffer());

        $shell->writeException($e);

        $this->assertSame($e, $shell->getScopeVariable('_e'));
        $this->assertFalse($shell->hasCode());
        $this->assertEmpty($shell->getCodeBuffer());

        rewind($stream);
        $streamContents = stream_get_contents($stream);

        $this->assertContains('PHP Parse error', $streamContents);
        $this->assertContains('message', $streamContents);
        $this->assertContains('line 13', $streamContents);
    }

    public function testHandlingErrors()
    {
        $shell  = new Shell($this->getConfig());
        $output = $this->getOutput();
        $stream = $output->getStream();
        $shell->setOutput($output);

        $oldLevel = error_reporting();
        error_reporting($oldLevel & ~E_USER_NOTICE);

        try {
            $shell->handleError(E_USER_NOTICE, 'wheee', null, 13);
        } catch (ErrorException $e) {
            error_reporting($oldLevel);
            $this->fail('Unexpected error exception');
        }
        error_reporting($oldLevel);

        rewind($stream);
        $streamContents = stream_get_contents($stream);

        $this->assertContains('PHP error:', $streamContents);
        $this->assertContains('wheee',      $streamContents);
        $this->assertContains('line 13',    $streamContents);
    }

    /**
     * @expectedException \Psy\Exception\ErrorException
     */
    public function testNotHandlingErrors()
    {
        $shell    = new Shell($this->getConfig());
        $oldLevel = error_reporting();
        error_reporting($oldLevel | E_USER_NOTICE);

        try {
            $shell->handleError(E_USER_NOTICE, 'wheee', null, 13);
        } catch (ErrorException $e) {
            error_reporting($oldLevel);
            throw $e;
        }
    }

    public function testVersion()
    {
        $shell = new Shell($this->getConfig());

        $this->assertInstanceOf('Symfony\Component\Console\Application', $shell);
        $this->assertContains(Shell::VERSION, $shell->getVersion());
        $this->assertContains(phpversion(), $shell->getVersion());
        $this->assertContains(php_sapi_name(), $shell->getVersion());
    }

    public function testCodeBuffer()
    {
        $shell = new Shell($this->getConfig());

        $shell->addCode('class');
        $this->assertNull($shell->flushCode());
        $this->assertTrue($shell->hasCode());

        $shell->addCode('a');
        $this->assertNull($shell->flushCode());
        $this->assertTrue($shell->hasCode());

        $shell->addCode('{}');
        $code = $shell->flushCode();
        $this->assertFalse($shell->hasCode());
        $code = preg_replace('/\s+/', ' ', $code);
        $this->assertNotNull($code);
        $this->assertEquals('class a { } return new \\Psy\\CodeCleaner\\NoReturnValue();', $code);
    }

    public function testKeepCodeBufferOpen()
    {
        $shell = new Shell($this->getConfig());

        $shell->addCode('1 \\');
        $this->assertNull($shell->flushCode());
        $this->assertTrue($shell->hasCode());

        $shell->addCode('+ 1 \\');
        $this->assertNull($shell->flushCode());
        $this->assertTrue($shell->hasCode());

        $shell->addCode('+ 1');
        $code = $shell->flushCode();
        $this->assertFalse($shell->hasCode());
        $code = preg_replace('/\s+/', ' ', $code);
        $this->assertNotNull($code);
        $this->assertEquals('return 1 + 1 + 1;', $code);
    }

    /**
     * @expectedException \Psy\Exception\ParseErrorException
     */
    public function testCodeBufferThrowsParseExceptions()
    {
        $shell = new Shell($this->getConfig());
        $shell->addCode('this is not valid');
        $shell->flushCode();
    }

    public function testClosuresSupport()
    {
        $shell = new Shell($this->getConfig());
        $code = '$test = function () {}';
        $shell->addCode($code);
        $shell->flushCode();
        $code = '$test()';
        $shell->addCode($code);
        $shell->flushCode();
    }

    public function testWriteStdout()
    {
        $output = $this->getOutput();
        $stream = $output->getStream();
        $shell  = new Shell($this->getConfig());
        $shell->setOutput($output);

        $shell->writeStdout("{{stdout}}\n");

        rewind($stream);
        $streamContents = stream_get_contents($stream);

        $this->assertEquals('{{stdout}}' . PHP_EOL, $streamContents);
    }

    public function testWriteStdoutWithoutNewline()
    {
        $output = $this->getOutput();
        $stream = $output->getStream();
        $shell  = new Shell($this->getConfig());
        $shell->setOutput($output);

        $shell->writeStdout('{{stdout}}');

        rewind($stream);
        $streamContents = stream_get_contents($stream);

        $this->assertEquals('{{stdout}}<aside>⏎</aside>' . PHP_EOL, $streamContents);
    }

    /**
     * @dataProvider getReturnValues
     */
    public function testWriteReturnValue($input, $expected)
    {
        $output = $this->getOutput();
        $stream = $output->getStream();
        $shell  = new Shell($this->getConfig());
        $shell->setOutput($output);

        $shell->writeReturnValue($input);
        rewind($stream);
        $this->assertEquals($expected, stream_get_contents($stream));
    }

    public function getReturnValues()
    {
        return array(
            array('{{return value}}', "=> \"\033[32m{{return value}}\033[39m\"" . PHP_EOL),
            array(1, "=> \033[35m1\033[39m" . PHP_EOL),
        );
    }

    /**
     * @dataProvider getRenderedExceptions
     */
    public function testWriteException($exception, $expected)
    {
        $output = $this->getOutput();
        $stream = $output->getStream();
        $shell  = new Shell($this->getConfig());
        $shell->setOutput($output);

        $shell->writeException($exception);
        rewind($stream);
        $this->assertEquals($expected, stream_get_contents($stream));
    }

    public function getRenderedExceptions()
    {
        return array(
            array(new \Exception('{{message}}'), "Exception with message '{{message}}'" . PHP_EOL),
        );
    }

    private function getOutput()
    {
        $stream = fopen('php://memory', 'w+');
        $this->streams[] = $stream;

        $output = new StreamOutput($stream, StreamOutput::VERBOSITY_NORMAL, false);

        return $output;
    }

    private function getConfig(array $config = array())
    {
        // Mebbe there's a better way than this?
        $dir = tempnam(sys_get_temp_dir(), 'psysh_shell_test_');
        unlink($dir);

        $defaults = array(
            'configDir'  => $dir,
            'dataDir'    => $dir,
            'runtimeDir' => $dir,
        );

        return new Configuration(array_merge($defaults, $config));
    }
}