silverstripe-framework/tests/php/View/Parsers/DiffTest.php

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<?php
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namespace SilverStripe\View\Tests\Parsers;
use SilverStripe\Dev\SapphireTest;
use SilverStripe\View\Parsers\Diff;
class DiffTest extends SapphireTest
{
/**
* @see https://groups.google.com/forum/#!topic/silverstripe-dev/yHcluCvuszo
*/
public function testTableDiff()
{
if (!class_exists('DOMDocument')) {
$this->markTestSkipped('"DOMDocument" required');
return;
}
$from = "<table>
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<tbody>
<tr class=\"blah\">
<td colspan=\"2\">Row 1</td>
</tr>
<tr class=\"foo\">
<td>Row 2</td>
<td>Row 2</td>
</tr>
<tr>
<td>Row 3</td>
<td>Row 3</td>
</tr>
</tbody>
</table>";
$to = "<table class=\"new-class\">
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<tbody>
<tr class=\"blah\">
<td colspan=\"2\">Row 1</td>
</tr>
<tr class=\"foo\">
<td>Row 2</td>
<td>Row 2</td>
</tr>
</tbody>
</table>";
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$expected = "<ins>" . $to . "</ins>" . "<del>" . $from . "</del>";
$compare = Diff::compareHTML($from, $to);
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// Very hard to debug this way, wouldn't need to do this if PHP had an *actual* DOM parsing lib,
// and not just the poor excuse that is DOMDocument
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$compare = preg_replace('/[\s\t\n\r]*/', '', $compare ?? '');
$expected = preg_replace('/[\s\t\n\r]*/', '', $expected ?? '');
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$this->assertEquals($expected, $compare);
}
/**
* @see https://github.com/silverstripe/silverstripe-framework/issues/8053
*/
public function testLegacyEachStatement()
{
$sentenceOne =
'Lorem ipsum dolor sit amet, consectetur adipiscing elit.';
$sentenceTwo =
'Nulla porttitor, ex quis commodo pharetra, diam dui efficitur justo, eu gravida elit eros vel libero.';
$from = "$sentenceOne $sentenceTwo";
$to = "$sentenceTwo $sentenceOne";
// We're cheating our test a little bit here, because depending on what HTML cleaner you have, you'll get
// spaces added or not added around the tags.
$expected = "/^ *<del>$sentenceOne<\/del> *$sentenceTwo *<ins>$sentenceOne<\/ins> *$/";
$actual = Diff::compareHTML($from, $to);
$this->assertMatchesRegularExpression($expected, $actual);
}
public function testDiffArray()
{
$from = ['Lorem', ['array here please ignore'], 'ipsum dolor'];
$to = 'Lorem,ipsum';
$expected = "/^Lorem,ipsum *<del>dolor<\/del> *$/";
$actual = Diff::compareHTML($from, $to);
$this->assertMatchesRegularExpression($expected, $actual);
}
}