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Add unshift method to Collection #51344

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merged 1 commit into from
May 8, 2024
Merged

Add unshift method to Collection #51344

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13 changes: 13 additions & 0 deletions src/Illuminate/Collections/Collection.php
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Original file line number Diff line number Diff line change
Expand Up @@ -995,6 +995,19 @@ public function push(...$values)
return $this;
}

/**
* Prepend one or more items to the beginning of the collection.
*
* @param TValue ...$values
* @return $this
*/
public function unshift(...$values)
{
array_unshift($this->items, ...$values);

return $this;
}

/**
* Push all of the given items onto the collection.
*
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45 changes: 45 additions & 0 deletions tests/Support/SupportCollectionTest.php
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Original file line number Diff line number Diff line change
Expand Up @@ -3788,6 +3788,51 @@ public function testPushWithMultipleItems()
$this->assertSame($expected, $actual);
}

public function testUnshiftWithOneItem()
{
$expected = [
0 => 'Jonny from Laroe',
1 => ['who' => 'Jonny', 'preposition' => 'from', 'where' => 'Laroe'],
2 => ['a', 'b', 'c'],
3 => 4,
4 => 5,
5 => 6,
];

$data = new Collection([4, 5, 6]);
$data->unshift(['a', 'b', 'c']);
$data->unshift(['who' => 'Jonny', 'preposition' => 'from', 'where' => 'Laroe']);
$actual = $data->unshift('Jonny from Laroe')->toArray();

$this->assertSame($expected, $actual);
}

public function testUnshiftWithMultipleItems()
{
$expected = [
0 => 'a',
1 => 'b',
2 => 'c',
3 => 'Jonny',
4 => 'from',
5 => 'Laroe',
6 => 'Jonny',
7 => 'from',
8 => 'Laroe',
9 => 4,
10 => 5,
11 => 6,
];

$data = new Collection([4, 5, 6]);
$data->unshift('Jonny', 'from', 'Laroe');
$data->unshift(...[11 => 'Jonny', 12 => 'from', 13 => 'Laroe']);
$data->unshift(...collect(['a', 'b', 'c']));
$actual = $data->unshift(...[])->toArray();

$this->assertSame($expected, $actual);
}

#[DataProvider('collectionClassProvider')]
public function testZip($collection)
{
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