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<?php |
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/** |
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* Novactive Collection. |
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* |
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* @author Luke Visinoni <[email protected], [email protected]> |
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* @author Sébastien Morel <[email protected], [email protected]> |
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* @copyright 2017 Novactive |
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* @license MIT |
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*/ |
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namespace Novactive\Tests; |
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use Novactive\Collection\Factory; |
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/** |
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* Class IteratorCollectionTest. |
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*/ |
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class IteratorCollectionTest extends UnitTestCase |
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{ |
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public function testCurrentReturnsCurrentValue() |
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{ |
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$coll = Factory::create($this->fixtures['names']); |
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$this->assertEquals('Chelsea', $coll->current()); |
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} |
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public function testNextMovesCollectionInternalPointer() |
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{ |
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$coll = Factory::create($this->fixtures['names']); |
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$this->assertEquals( |
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'Chelsea', |
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$coll->current(), |
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'Initial call to current() should return first item in collection.' |
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); |
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$this->assertEquals( |
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'Chelsea', |
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$coll->current(), |
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'Subsequent calls to current() should continue to return the same value.' |
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); |
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$coll->next(); |
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$this->assertEquals( |
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'Adella', |
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$coll->current(), |
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'After calling next(), current() should return the next item in the collection.' |
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); |
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$coll->next(); |
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$this->assertEquals( |
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'Monte', |
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$coll->current(), |
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'Subsequent calls to next() and current() should return the next item in the collection.' |
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); |
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$coll->next(); |
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$coll->next(); |
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$coll->next(); |
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$coll->next(); |
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$coll->next(); |
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$coll->next(); |
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$coll->next(); |
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$this->assertEquals('Nakia', $coll->current(), 'We should now be at the last item in the collection.'); |
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$coll->next(); |
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$this->assertFalse( |
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$coll->current(), |
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"Subsequent calls to current() should return false because we have next'd past the end of the collection." |
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); |
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$coll->next(); |
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$this->assertFalse( |
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$coll->current(), |
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"Subsequent calls to current() should return false because we have next'd past the end of the collection." |
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); |
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} |
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public function testKeyReturnsCurrentKeyInCollection() |
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{ |
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$coll = Factory::create($this->fixtures['names']); |
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$this->assertSame(0, $coll->key(), 'Initial call to key() should return first item in collection.'); |
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$this->assertSame(0, $coll->key(), 'Subsequent calls to key() should continue to return the same value.'); |
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$coll->next(); |
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$this->assertSame( |
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1, |
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$coll->key(), |
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'After calling next(), key() should return the next item in the collection.' |
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); |
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$coll->next(); |
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$this->assertSame( |
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2, |
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$coll->key(), |
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'Subsequent calls to next() and key() should return the next item in the collection.' |
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); |
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$coll->next(); |
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$coll->next(); |
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$coll->next(); |
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$coll->next(); |
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$coll->next(); |
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$coll->next(); |
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$coll->next(); |
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$this->assertSame(9, $coll->key(), 'We should now be at the last item in the collection.'); |
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$coll->next(); |
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$this->assertNull( |
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$coll->key(), |
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'Subsequent calls to key() should continue to return null because'. |
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" we have next'd past the end of the collection." |
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); |
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$coll->next(); |
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$this->assertNull( |
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$coll->key(), |
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'Subsequent calls to key() should continue to return null because'. |
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" we have next'd past the end of the collection." |
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); |
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} |
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public function testValidReturnsFalseWhenCollectionHasBeenIteratedBeyondItsLastItem() |
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{ |
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$coll = Factory::create($this->fixtures['names']); |
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$this->assertTrue($coll->valid(), 'Initial call to valid() should always return true.'); |
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$coll->next(); |
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$this->assertTrue($coll->valid(), 'Subsequent calls to valid() should continue to return true.'); |
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$coll->next(); |
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$this->assertTrue($coll->valid(), 'Subsequent calls to valid() should continue to return true.'); |
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$coll->next(); |
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$coll->next(); |
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$coll->next(); |
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$coll->next(); |
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$coll->next(); |
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$coll->next(); |
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$coll->next(); |
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$this->assertTrue($coll->valid(), 'When at the last item in the collection, valid() should still return true.'); |
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$coll->next(); |
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$this->assertFalse( |
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$coll->valid(), |
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'Finally, valid() should return false because we have iterated beyond the end of the collection.' |
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); |
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} |
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public function testRewindWillReturnInternalPointerToItsInitialPosition() |
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{ |
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$coll = Factory::create($this->fixtures['names']); |
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$this->assertEquals('Chelsea', $coll->first()); |
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$this->assertTrue($coll->valid(), 'Initial call to valid() should always return true.'); |
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$coll->next(); |
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$this->assertTrue($coll->valid(), 'Subsequent calls to valid() should continue to return true.'); |
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$coll->next(); |
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$this->assertTrue($coll->valid(), 'Subsequent calls to valid() should continue to return true.'); |
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$coll->next(); |
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$coll->next(); |
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$coll->next(); |
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$coll->next(); |
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$coll->next(); |
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$coll->next(); |
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$coll->next(); |
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$this->assertTrue($coll->valid(), 'When at the last item in the collection, valid() should still return true.'); |
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$this->assertEquals($coll->last(), $coll->current(), 'Current value should be the last value now.'); |
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$coll->next(); |
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$this->assertFalse( |
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$coll->valid(), |
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'Finally, valid() should return false because we have iterated beyond the end of the collection.' |
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); |
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$this->assertNull($coll->rewind(), 'Rewind MUST NOT have a return value.'); |
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$this->assertTrue( |
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$coll->valid(), |
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'The rewind() method should have returned us to the beginning now so valid() should return true.' |
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); |
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$this->assertEquals( |
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$coll->first(), |
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$coll->current(), |
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'The rewind() method should have returned us to the beginning now so'. |
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' current() should return the first item in the collection.' |
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); |
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$coll->next(); |
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$coll2 = clone $coll; |
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$this->assertEquals($coll2->first(), $coll2->current(), 'A clone of a collection should be reset.'); |
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} |
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public function testInstantiationShouldRewindArrayArgsInternalPointer() |
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{ |
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$arr = $this->fixtures['names']; |
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$this->assertEquals('Chelsea', current($arr)); |
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next($arr); |
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$this->assertEquals('Adella', current($arr)); |
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$coll = Factory::create($arr); |
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$this->assertEquals('Chelsea', $coll->current()); |
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} |
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} |
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Novactive /
NovaCollection
