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Implementation of a Zipper, for efficient splice.

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Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
This commit is contained in:
Edward Z. Yang
2013-10-13 01:15:55 -07:00
parent a5fc37d8c3
commit f17490f009
4 changed files with 172 additions and 0 deletions
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25
tests/HTMLPurifier/ZipperTest.php Normal file
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<?php
class HTMLPurifier_ZipperTest extends HTMLPurifier_Harness
{
public function testBasicNavigation() {
list($z, $t) = HTMLPurifier_Zipper::fromArray(array(0,1,2,3));
$this->assertIdentical($t, 0);
$t = $z->next($t);
$this->assertIdentical($t, 1);
$t = $z->prev($t);
$this->assertIdentical($t, 0);
$t = $z->advance($t, 2);
$this->assertIdentical($t, 2);
$t = $z->delete();
$this->assertIdentical($t, 3);
$z->insertBefore(4);
$z->insertAfter(5);
$this->assertIdentical($z->toArray($t), array(0,1,4,3,5));
$t = $z->splice($t, 2, array(6,7));
$this->assertIdentical($t, 6);
$this->assertIdentical($z->toArray($t), array(0,1,4,6,7));
}
// ToDo: QuickCheck style test comparing with array_splice
}