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Filename : LibeditTest.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\Readline;

use Psy\Readline\Libedit;

class LibeditTest extends \PHPUnit_Framework_TestCase
{
    private $historyFile;

    public function setUp()
    {
        if (!Libedit::isSupported()) {
            $this->markTestSkipped('Libedit not enabled');
        }

        $this->historyFile = tempnam(sys_get_temp_dir(), 'psysh_test_history');
        if (false === file_put_contents($this->historyFile, "_HiStOrY_V2_\n")) {
            $this->fail('Unable to write history file: ' . $this->historyFile);
        }
        // Calling readline_read_history before readline_clear_history
        // avoids segfault with PHP 5.5.7 & libedit v3.1
        readline_read_history($this->historyFile);
        readline_clear_history();
    }

    public function tearDown()
    {
        if (is_file($this->historyFile)) {
            unlink($this->historyFile);
        }
    }

    public function testHistory()
    {
        $readline = new Libedit($this->historyFile);
        $this->assertEmpty($readline->listHistory());
        $readline->addHistory('foo');
        $this->assertEquals(array('foo'), $readline->listHistory());
        $readline->addHistory('bar');
        $this->assertEquals(array('foo', 'bar'), $readline->listHistory());
        $readline->addHistory('baz');
        $this->assertEquals(array('foo', 'bar', 'baz'), $readline->listHistory());
        $readline->clearHistory();
        $this->assertEmpty($readline->listHistory());
    }

    /**
     * @depends testHistory
     */
    public function testHistorySize()
    {
        $readline = new Libedit($this->historyFile, 2);
        $this->assertEmpty($readline->listHistory());
        $readline->addHistory('foo');
        $readline->addHistory('bar');
        $this->assertEquals(array('foo', 'bar'), $readline->listHistory());
        $readline->addHistory('baz');
        $this->assertEquals(array('bar', 'baz'), $readline->listHistory());
        $readline->addHistory('w00t');
        $this->assertEquals(array('baz', 'w00t'), $readline->listHistory());
        $readline->clearHistory();
        $this->assertEmpty($readline->listHistory());
    }

    /**
     * @depends testHistory
     */
    public function testHistoryEraseDups()
    {
        $readline = new Libedit($this->historyFile, 0, true);
        $this->assertEmpty($readline->listHistory());
        $readline->addHistory('foo');
        $readline->addHistory('bar');
        $readline->addHistory('foo');
        $this->assertEquals(array('bar', 'foo'), $readline->listHistory());
        $readline->addHistory('baz');
        $readline->addHistory('w00t');
        $readline->addHistory('baz');
        $this->assertEquals(array('bar', 'foo', 'w00t', 'baz'), $readline->listHistory());
        $readline->clearHistory();
        $this->assertEmpty($readline->listHistory());
    }

    public function testListHistory()
    {
        $readline = new Libedit($this->historyFile);
        file_put_contents(
            $this->historyFile,
            "This is an entry\n\0This is a comment\nThis is an entry\0With a comment\n",
            FILE_APPEND
        );
        $this->assertEquals(array(
            'This is an entry',
            'This is an entry',
        ), $readline->listHistory());
        $readline->clearHistory();
    }

    /**
     * Libedit being a BSD library,
     * it doesn't support non-unix line separators.
     */
    public function testLinebreaksSupport()
    {
        $readline = new Libedit($this->historyFile);
        file_put_contents(
            $this->historyFile,
            "foo\rbar\nbaz\r\nw00t",
            FILE_APPEND
        );
        $this->assertEquals(array(
            "foo\rbar",
            "baz\r",
            'w00t',
        ), $readline->listHistory());
        $readline->clearHistory();
    }
}