silverstripe-textextraction/tests/FileTextExtractableTest.php

<?php
class FileTextExtractableTest extends SapphireTest
{
    protected $requiredExtensions = array(
        'File' => array('FileTextExtractable')
    );

    public function setUp()
    {
        parent::setUp();

        // Ensure that html is a valid extension
        Config::inst()
            ->nest()
            ->update('File', 'allowed_extensions', array('html'));
    }

    public function tearDown()
    {
        Config::unnest();
        parent::tearDown();
    }

    public function testExtractFileAsText()
    {
        // Create a copy of the file, as it may be clobbered by the test
        // ($file->extractFileAsText() calls $file->write)
        copy(BASE_PATH.'/textextraction/tests/fixtures/test1.html', BASE_PATH.'/textextraction/tests/fixtures/test1-copy.html');

        // Use HTML, since the extractor is always available
        /** @var File&FileTextExtractable $file */
        $file = new File(array(
            'Name' => 'test1-copy.html',
            'Filename' => 'textextraction/tests/fixtures/test1-copy.html'
        ));
        $file->write();

        $content = (string) $file->extractFileAsText();
        $this->assertContains('Test Headline', $content);
        $this->assertContains('Test Text', $content);
        $this->assertEquals($content, $file->FileContentCache);

        if (file_exists(BASE_PATH.'/textextraction/tests/fixtures/test1-copy.html')) {
            unlink(BASE_PATH.'/textextraction/tests/fixtures/test1-copy.html');
        }
    }
}