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added tests for arr::first.

This commit is contained in:
Taylor Otwell 2011-09-15 22:27:29 -05:00
parent de2eabdf79
commit 4167a2953c
2 changed files with 26 additions and 20 deletions
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26
laravel/arr.php
View File

@ -1,5 +1,7 @@
<?php namespace Laravel; <?php namespace Laravel;
use Closure;
class Arr { class Arr {
/** /**
@ -9,14 +11,6 @@ class Arr {
* also be accessed using JavaScript "dot" style notation. Retrieving items nested * also be accessed using JavaScript "dot" style notation. Retrieving items nested
* in multiple arrays is supported. * in multiple arrays is supported.
* *
* <code>
* // Get the "name" item from the array
* $name = Arr::get(array('name' => 'Fred'), 'name');
*
* // Get the "age" item from the array, or return 25 if it doesn't exist
* $name = Arr::get(array('name' => 'Fred'), 'age', 25);
* </code>
*
* @param array $array * @param array $array
* @param string $key * @param string $key
* @param mixed $default * @param mixed $default
@ -30,7 +24,7 @@ public static function get($array, $key, $default = null)
{ {
if ( ! is_array($array) or ! array_key_exists($segment, $array)) if ( ! is_array($array) or ! array_key_exists($segment, $array))
{ {
return ($default instanceof \Closure) ? call_user_func($default) : $default; return ($default instanceof Closure) ? call_user_func($default) : $default;
} }
$array = $array[$segment]; $array = $array[$segment];
@ -46,11 +40,6 @@ public static function get($array, $key, $default = null)
* a variable depth, such as configuration arrays. Like the Arr::get * a variable depth, such as configuration arrays. Like the Arr::get
* method, JavaScript "dot" syntax is supported. * method, JavaScript "dot" syntax is supported.
* *
* <code>
* // Set an array's "name" item to "Fred"
* Arr::set($array, 'name', 'Fred');
* </code>
*
* @param array $array * @param array $array
* @param string $key * @param string $key
* @param mixed $value * @param mixed $value
@ -80,21 +69,18 @@ public static function set(&$array, $key, $value)
/** /**
* Return the first element in an array which passes a given truth test. * Return the first element in an array which passes a given truth test.
* *
* <code>
* // Get the first element in an array that is less than 2
* $value = Arr::first(array(4, 3, 2, 1), function($key, $value) {return $value < 2;});
* </code>
*
* @param array $array * @param array $array
* @param Closure $callback * @param Closure $callback
* @return mixed * @return mixed
*/ */
public static function first($array, $callback) public static function first($array, $callback, $default = null)
{ {
foreach ($array as $key => $value) foreach ($array as $key => $value)
{ {
if (call_user_func($callback, $key, $value)) return $value; if (call_user_func($callback, $key, $value)) return $value;
} }
return ($default instanceof Closure) ? call_user_func($default) : $default;
} }
} }

20
tests/ArrTest.php
View File

@ -36,6 +36,26 @@ public function testSetMethodSetsItemsInArray($array)
} }
/**
* @dataProvider getArray
*/
public function testFirstMethodReturnsFirstItemPassingTruthTest($array)
{
$array['email2'] = 'taylor@hotmail.com';
$this->assertEquals('taylorotwell@gmail.com', Arr::first($array, function($k, $v) {return substr($v, 0, 3) == 'tay';}));
}
/**
* @dataProvider getArray
*/
public function testFirstMethodReturnsDefaultWhenNoItemExists($array)
{
$this->assertNull(Arr::first($array, function($k, $v) {return $v === 'something';}));
$this->assertEquals('default', Arr::first($array, function($k, $v) {return $v === 'something';}, 'default'));
$this->assertEquals('default', Arr::first($array, function($k, $v) {return $v === 'something';}, function() {return 'default';}));
}
public function getArray() public function getArray()
{ {
return array(array( return array(array(