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getFileRelative example

    private function formatFile(string $file, int $line, string $text = null): string
    {
        $file = trim($file);

        if (null === $text) {
            $text = $file;
            if (null !== $rel = $this->getFileRelative($text)) {
                $rel = explode('/', $rel, 2);
                $text = sprintf('<abbr title="%s%2$s">%s</abbr>%s', $this->projectDir, $rel[0], '/'.($rel[1] ?? ''));
            }
        }

        if (0 < $line) {
            $text .= ' at line '.$line;
        }

        if (false !== $link = $this->getFileLink($file, $line)) {
            return sprintf('<a href="%s" title="Click to open this file" class="file_link">%s</a>', $this->escape($link), $text);
        }

class CodeExtensionTest extends TestCase
{
    public function testFormatFile()
    {
        $expected = sprintf('<a href="proto://foobar%s#&line=25" title="Click to open this file" class="file_link">%s at line 25</a>', substr(__FILE__, 5), __FILE__);
        $this->assertEquals($expected, $this->getExtension()->formatFile(__FILE__, 25));
    }

    public function testFileRelative()
    {
        $this->assertEquals('file.txt', $this->getExtension()->getFileRelative(\DIRECTORY_SEPARATOR.'project'.\DIRECTORY_SEPARATOR.'file.txt'));
    }

    /** * @dataProvider getClassNameProvider */
    public function testGettingClassAbbreviation($class, $abbr)
    {
        $this->assertEquals($this->getExtension()->abbrClass($class), $abbr);
    }

    /** * @dataProvider getMethodNameProvider */

        return [
            new TwigFilter('abbr_class', $this->abbrClass(...), ['is_safe' => ['html']]),
            new TwigFilter('abbr_method', $this->abbrMethod(...), ['is_safe' => ['html']]),
            new TwigFilter('format_args', $this->formatArgs(...), ['is_safe' => ['html']]),
            new TwigFilter('format_args_as_text', $this->formatArgsAsText(...)),
            new TwigFilter('file_excerpt', $this->fileExcerpt(...), ['is_safe' => ['html']]),
            new TwigFilter('format_file', $this->formatFile(...), ['is_safe' => ['html']]),
            new TwigFilter('format_file_from_text', $this->formatFileFromText(...), ['is_safe' => ['html']]),
            new TwigFilter('format_log_message', $this->formatLogMessage(...), ['is_safe' => ['html']]),
            new TwigFilter('file_link', $this->getFileLink(...)),
            new TwigFilter('file_relative', $this->getFileRelative(...)),
        ];
    }

    public function abbrClass(string $class): string
    {
        $parts = explode('\\', $class);
        $short = array_pop($parts);

        return sprintf('<abbr title="%s">%s</abbr>', $class, $short);
    }