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CollectionTest.php
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CollectionTest.php
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<?php
/**
* Lithium: the most rad php framework
*
* @copyright Copyright 2011, Union of RAD (http://union-of-rad.org)
* @license http://opensource.org/licenses/bsd-license.php The BSD License
*/
namespace lithium\tests\cases\util;
use stdClass;
use lithium\util\Collection;
use lithium\tests\mocks\util\MockCollectionMarker;
use lithium\tests\mocks\util\MockCollectionObject;
use lithium\tests\mocks\util\MockCollectionStringCast;
class CollectionTest extends \lithium\test\Unit {
public function setUp() {
Collection::formats('\lithium\net\http\Media');
}
public function testArrayLike() {
$collection = new Collection();
$collection[] = 'foo';
$this->assertEqual($collection[0], 'foo');
$this->assertEqual(count($collection), 1);
$collection = new Collection(array('data' => array('foo')));
$this->assertEqual($collection[0], 'foo');
$this->assertEqual(count($collection), 1);
}
public function testObjectMethodDispatch() {
$collection = new Collection();
for ($i = 0; $i < 10; $i++) {
$collection[] = new MockCollectionMarker();
}
$result = $collection->mark();
$this->assertEqual($result, array_fill(0, 10, true));
$result = $collection->mapArray();
$this->assertEqual($result, array_fill(0, 10, array('foo')));
$result = $collection->invoke('mapArray', array(), array('merge' => true));
$this->assertEqual($result, array_fill(0, 10, 'foo'));
$collection = new Collection(array(
'data' => array_fill(0, 10, new MockCollectionObject())
));
$result = $collection->testFoo();
$this->assertEqual($result, array_fill(0, 10, 'testFoo'));
$result = $collection->invoke('testFoo', array(), array('collect' => true));
$this->assertTrue($result instanceof Collection);
$this->assertEqual($result->to('array'), array_fill(0, 10, 'testFoo'));
}
public function testObjectCasting() {
$collection = new Collection(array(
'data' => array_fill(0, 10, new MockCollectionObject())
));
$result = $collection->to('array');
$expected = array_fill(0, 10, array(1 => 2, 2 => 3));
$this->assertEqual($expected, $result);
$collection = new Collection(array(
'data' => array_fill(0, 10, new MockCollectionMarker())
));
$result = $collection->to('array');
$expected = array_fill(0, 10, array('marker' => false, 'data' => 'foo'));
$this->assertEqual($expected, $result);
$collection = new Collection(array(
'data' => array_fill(0, 10, new MockCollectionStringCast())
));
$result = $collection->to('array');
$expected = array_fill(0, 10, json_encode(array(1 => 2, 2 => 3)));
$this->assertEqual($expected, $result);
}
/**
* Tests that the `find()` method properly filters items out of the resulting collection.
*
* @return void
*/
public function testCollectionFindFilter() {
$collection = new Collection(array('data' => array_merge(
array_fill(0, 10, 1),
array_fill(0, 10, 2)
)));
$this->assertEqual(20, count($collection->to('array')));
$filter = function($item) { return $item == 1; };
$result = $collection->find($filter);
$this->assertTrue($result instanceof Collection);
$this->assertEqual(array_fill(0, 10, 1), $result->to('array'));
$result = $collection->find($filter, array('collect' => false));
$this->assertEqual(array_fill(0, 10, 1), $result);
}
/**
* Tests that the `first()` method properly returns the first non-empty value.
*
* @return void
*/
public function testCollectionFirstFilter() {
$collection = new Collection(array('data' => array(0, 1, 2)));
$result = $collection->first(function($value) { return $value; });
$this->assertEqual(1, $result);
$collection = new Collection(array('data' => array('Hello', '', 'Goodbye')));
$result = $collection->first(function($value) { return $value; });
$this->assertEqual('Hello', $result);
$collection = new Collection(array('data' => array('', 'Hello', 'Goodbye')));
$result = $collection->first(function($value) { return $value; });
$this->assertEqual('Hello', $result);
$collection = new Collection(array('data' => array('', 'Hello', 'Goodbye')));
$result = $collection->first();
$this->assertEqual('', $result);
}
/**
* Tests that the `each()` filter applies the callback to each item in the current collection,
* returning an instance of itself.
*
* @return void
*/
public function testCollectionEachFilter() {
$collection = new Collection(array('data' => array(1, 2, 3, 4, 5)));
$filter = function($item) { return ++$item; };
$result = $collection->each($filter);
$this->assertIdentical($collection, $result);
$this->assertEqual(array(2, 3, 4, 5, 6), $collection->to('array'));
}
public function testCollectionMapFilter() {
$collection = new Collection(array('data' => array(1, 2, 3, 4, 5)));
$filter = function($item) { return ++$item; };
$result = $collection->map($filter);
$this->assertNotEqual($collection, $result);
$this->assertEqual(array(1, 2, 3, 4, 5), $collection->to('array'));
$this->assertEqual(array(2, 3, 4, 5, 6), $result->to('array'));
$result = $collection->map($filter, array('collect' => false));
$this->assertEqual(array(2, 3, 4, 5, 6), $result);
}
/**
* Tests the `ArrayAccess` interface implementation for manipulating values by direct offsets.
*
* @return void
*/
public function testArrayAccessOffsetMethods() {
$collection = new Collection(array('data' => array('foo', 'bar', 'baz' => 'dib')));
$this->assertTrue($collection->offsetExists(0));
$this->assertTrue($collection->offsetExists(1));
$this->assertTrue($collection->offsetExists('0'));
$this->assertTrue($collection->offsetExists('baz'));
$this->assertFalse($collection->offsetExists('2'));
$this->assertFalse($collection->offsetExists('bar'));
$this->assertFalse($collection->offsetExists(2));
$this->assertEqual('foo', $collection->offsetSet('bar', 'foo'));
$this->assertTrue($collection->offsetExists('bar'));
$this->assertNull($collection->offsetUnset('bar'));
$this->assertFalse($collection->offsetExists('bar'));
}
/**
* Tests the `ArrayAccess` interface implementation for traversing values.
*
* @return void
*/
public function testArrayAccessTraversalMethods() {
$collection = new Collection(array('data' => array('foo', 'bar', 'baz' => 'dib')));
$this->assertEqual('foo', $collection->current());
$this->assertEqual('bar', $collection->next());
$this->assertEqual('foo', $collection->prev());
$this->assertEqual('bar', $collection->next());
$this->assertEqual('dib', $collection->next());
$this->assertEqual('baz', $collection->key());
$this->assertTrue($collection->valid());
$this->assertFalse($collection->next());
$this->assertFalse($collection->valid());
$this->assertEqual('foo', $collection->rewind());
$this->assertTrue($collection->valid());
$this->assertEqual('dib', $collection->prev());
$this->assertTrue($collection->valid());
$this->assertEqual('bar', $collection->prev());
$this->assertTrue($collection->valid());
$this->assertEqual('dib', $collection->end());
$this->assertTrue($collection->valid());
}
/**
* Tests objects and scalar values being appended to the collection.
*
* @return void
*/
public function testValueAppend() {
$collection = new Collection();
$this->assertFalse($collection->valid());
$this->assertEqual(0, count($collection));
$collection->append(1);
$this->assertEqual(1, count($collection));
$collection->append(new stdClass());
$this->assertEqual(2, count($collection));
$this->assertEqual(1, $collection->current());
$this->assertEqual(new stdClass(), $collection->next());
}
/**
* Tests getting the index of the internal array.
*
* @return void
*/
public function testInternalKeys() {
$collection = new Collection(array('data' => array('foo', 'bar', 'baz' => 'dib')));
$this->assertEqual(array(0, 1, 'baz'), $collection->keys());
}
/**
* Tests that various types of handlers can be registered with `Collection::formats()`, and
* that collection instances are converted correctly.
*
* @return void
*/
public function testCollectionFormatConversion() {
Collection::formats('lithium\net\http\Media');
$data = array('hello', 'goodbye', 'foo' => array('bar', 'baz' => 'dib'));
$collection = new Collection(compact('data'));
$expected = json_encode($data);
$result = $collection->to('json');
$this->assertEqual($expected, $result);
$this->assertNull($collection->to('badness'));
Collection::formats(false);
$this->assertNull($collection->to('json'));
Collection::formats('json', function($collection, $options) {
return json_encode($collection->to('array'));
});
$result = $collection->to('json');
$this->assertEqual($expected, $result);
$result = $collection->to(function($collection) {
$value = array_map(
function($i) { return is_array($i) ? join(',', $i) : $i; }, $collection->to('array')
);
return join(',', $value);
});
$expected = 'hello,goodbye,bar,dib';
$this->assertEqual($expected, $result);
}
}
?>