function DiffOpOutputBuilderTest::testDiffInfiniteLoop

Tests that two files can be successfully diffed.

@covers ::toOpsArray

File

core/tests/Drupal/Tests/Component/Diff/DiffOpOutputBuilderTest.php, line 119

Class

DiffOpOutputBuilderTest

@coversDefaultClass \Drupal\Component\Diff\DiffOpOutputBuilder

Namespace

Code

public function testDiffInfiniteLoop() : void {
    $from = explode("\n", file_get_contents(__DIR__ . '/Engine/fixtures/file1.txt'));
    $to = explode("\n", file_get_contents(__DIR__ . '/Engine/fixtures/file2.txt'));
    $diffOpBuilder = new DiffOpOutputBuilder();
    $differ = new Differ($diffOpBuilder);
    $diff = $differ->diffToArray($from, $to);
    $diffOps = $diffOpBuilder->toOpsArray($diff);
    $this->assertCount(4, $diffOps);
    $this->assertEquals($diffOps[0], new DiffOpAdd([
        '    - image.style.max_325x325',
    ]));
    $this->assertEquals($diffOps[1], new DiffOpCopy([
        '    - image.style.max_650x650',
    ]));
    $this->assertEquals($diffOps[2], new DiffOpChange([
        '    - image.style.max_325x325',
    ], [
        '_core:',
        '  default_config_hash: random_hash_string_here',
    ]));
    $this->assertEquals($diffOps[3], new DiffOpCopy([
        'fallback_image_style: max_325x325',
        '',
    ]));
}