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<?php |
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declare(strict_types = 1); |
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namespace Tests\Innmind\Immutable\Sequence; |
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use Innmind\Immutable\{ |
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Sequence\Defer, |
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Sequence\Implementation, |
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Map, |
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Sequence, |
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Str, |
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Set, |
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SideEffect, |
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}; |
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use PHPUnit\Framework\TestCase; |
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class DeferTest extends TestCase |
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{ |
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public function testInterface() |
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{ |
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$this->assertInstanceOf( |
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Implementation::class, |
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new Defer((static fn() => yield)()), |
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); |
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} |
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public function testGeneratorNotLoadedAtInstanciation() |
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{ |
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$loaded = false; |
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$sequence = new Defer((static function() use (&$loaded) { |
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yield 1; |
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$loaded = true; |
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})()); |
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$this->assertFalse($loaded); |
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} |
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public function testSize() |
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{ |
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$sequence = new Defer((static function() { |
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yield 1; |
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yield 1; |
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})()); |
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$this->assertSame(2, $sequence->size()); |
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$this->assertSame(2, $sequence->count()); |
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} |
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public function testIterator() |
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{ |
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$sequence = new Defer((static function() { |
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yield 1; |
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yield 2; |
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yield 3; |
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})()); |
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$this->assertSame( |
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[1, 2, 3], |
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\iterator_to_array($sequence->iterator()), |
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); |
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} |
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public function testGet() |
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{ |
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$sequence = new Defer((static function() { |
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yield 1; |
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yield 42; |
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yield 3; |
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})()); |
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$this->assertSame(42, $this->get($sequence, 1)); |
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} |
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public function testReturnNothinWhenIndexNotFound() |
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{ |
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$sequence = new Defer((static function() { |
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if (false) { |
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yield 1; |
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} |
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})()); |
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$this->assertNull($this->get($sequence, 0)); |
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} |
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public function testDiff() |
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{ |
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$aLoaded = false; |
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$bLoaded = false; |
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$a = new Defer((static function() use (&$aLoaded) { |
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yield 1; |
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yield 2; |
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$aLoaded = true; |
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})()); |
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$b = new Defer((static function() use (&$bLoaded) { |
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yield 2; |
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yield 3; |
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$bLoaded = true; |
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})()); |
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$c = $a->diff($b); |
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$this->assertFalse($aLoaded); |
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$this->assertFalse($bLoaded); |
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$this->assertSame([1, 2], \iterator_to_array($a->iterator())); |
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$this->assertSame([2, 3], \iterator_to_array($b->iterator())); |
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$this->assertInstanceOf(Defer::class, $c); |
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$this->assertSame([1], \iterator_to_array($c->iterator())); |
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$this->assertTrue($aLoaded); |
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$this->assertTrue($bLoaded); |
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} |
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public function testDistinct() |
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{ |
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$loaded = false; |
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$a = new Defer((static function() use (&$loaded) { |
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yield 1; |
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yield 2; |
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yield 1; |
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$loaded = true; |
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})()); |
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$b = $a->distinct(); |
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$this->assertFalse($loaded); |
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$this->assertSame([1, 2, 1], \iterator_to_array($a->iterator())); |
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$this->assertInstanceOf(Defer::class, $b); |
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$this->assertSame([1, 2], \iterator_to_array($b->iterator())); |
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$this->assertTrue($loaded); |
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} |
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public function testDrop() |
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{ |
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$loaded = false; |
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$a = new Defer((static function() use (&$loaded) { |
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yield 1; |
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yield 2; |
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yield 3; |
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yield 4; |
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$loaded = true; |
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})()); |
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$b = $a->drop(2); |
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$this->assertFalse($loaded); |
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$this->assertSame([1, 2, 3, 4], \iterator_to_array($a->iterator())); |
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$this->assertInstanceOf(Defer::class, $b); |
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$this->assertSame([3, 4], \iterator_to_array($b->iterator())); |
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$this->assertTrue($loaded); |
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} |
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public function testDropEnd() |
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{ |
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$a = new Defer((static function() { |
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yield 1; |
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yield 2; |
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yield 3; |
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yield 4; |
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})()); |
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$b = $a->dropEnd(2); |
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$this->assertSame([1, 2, 3, 4], \iterator_to_array($a->iterator())); |
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$this->assertInstanceOf(Implementation::class, $b); |
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$this->assertSame([1, 2], \iterator_to_array($b->iterator())); |
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} |
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public function testEquals() |
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{ |
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$a = new Defer((static function() { |
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yield 1; |
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yield 2; |
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})()); |
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$b = new Defer((static function() { |
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yield 1; |
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yield 2; |
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yield 3; |
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})()); |
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$this->assertTrue($a->equals($a)); |
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$this->assertFalse($a->equals($b)); |
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} |
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public function testFilter() |
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{ |
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$loaded = false; |
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$a = new Defer((static function() use (&$loaded) { |
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yield 1; |
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yield 2; |
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yield 3; |
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yield 4; |
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$loaded = true; |
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})()); |
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$b = $a->filter(static fn($i) => $i % 2 === 0); |
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$this->assertFalse($loaded); |
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$this->assertSame([1, 2, 3, 4], \iterator_to_array($a->iterator())); |
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$this->assertInstanceOf(Defer::class, $b); |
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$this->assertSame([2, 4], \iterator_to_array($b->iterator())); |
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$this->assertTrue($loaded); |
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} |
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public function testForeach() |
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{ |
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$sequence = new Defer((static function() { |
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yield 1; |
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yield 2; |
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yield 3; |
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yield 4; |
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})()); |
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$calls = 0; |
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$sum = 0; |
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$this->assertInstanceOf( |
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SideEffect::class, |
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$sequence->foreach(static function($i) use (&$calls, &$sum) { |
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++$calls; |
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$sum += $i; |
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}), |
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); |
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$this->assertSame(4, $calls); |
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$this->assertSame(10, $sum); |
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} |
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public function testGroupEmptySequence() |
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{ |
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$sequence = new Defer((static function() { |
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if (false) { |
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yield 1; |
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} |
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})()); |
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$this->assertTrue( |
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$sequence |
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->groupBy(static fn($i) => $i) |
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->equals(Map::of()), |
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); |
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} |
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public function testGroupBy() |
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{ |
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$sequence = new Defer((static function() { |
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yield 1; |
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yield 2; |
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yield 3; |
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yield 4; |
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})()); |
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$groups = $sequence->groupBy(static fn($i) => $i % 2); |
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$this->assertSame([1, 2, 3, 4], \iterator_to_array($sequence->iterator())); |
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$this->assertInstanceOf(Map::class, $groups); |
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$this->assertCount(2, $groups); |
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$this->assertSame([2, 4], $this->get($groups, 0)->toList()); |
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$this->assertSame([1, 3], $this->get($groups, 1)->toList()); |
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} |
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public function testReturnNothingWhenTryingToAccessFirstElementOnEmptySequence() |
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{ |
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$sequence = new Defer((static function() { |
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if (false) { |
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yield 1; |
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} |
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})()); |
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$this->assertNull( |
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$sequence->first()->match( |
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static fn($value) => $value, |
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static fn() => null, |
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), |
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); |
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} |
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public function testReturnWhenTryingToAccessLastElementOnEmptySequence() |
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{ |
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$sequence = new Defer((static function() { |
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if (false) { |
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yield 1; |
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} |
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})()); |
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$this->assertNull( |
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$sequence->last()->match( |
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static fn($value) => $value, |
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static fn() => null, |
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), |
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); |
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} |
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public function testFirst() |
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{ |
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$sequence = new Defer((static function() { |
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yield 2; |
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yield 3; |
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yield 4; |
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})()); |
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$this->assertSame( |
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2, |
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$sequence->first()->match( |
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static fn($value) => $value, |
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static fn() => null, |
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), |
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); |
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} |
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public function testLast() |
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{ |
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$sequence = new Defer((static function() { |
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yield 1; |
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yield 2; |
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yield 3; |
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})()); |
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308
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$this->assertSame( |
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3, |
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$sequence->last()->match( |
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static fn($value) => $value, |
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static fn() => null, |
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), |
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); |
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} |
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public function testContains() |
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{ |
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$sequence = new Defer((static function() { |
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yield 1; |
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yield 2; |
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yield 3; |
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})()); |
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$this->assertTrue($sequence->contains(2)); |
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$this->assertFalse($sequence->contains(4)); |
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} |
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329
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public function testIndexOf() |
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{ |
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$sequence = new Defer((static function() { |
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yield 1; |
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yield 2; |
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yield 4; |
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})()); |
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337
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$this->assertSame( |
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1, |
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$sequence->indexOf(2)->match( |
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340
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static fn($value) => $value, |
341
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static fn() => null, |
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), |
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); |
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$this->assertSame( |
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2, |
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$sequence->indexOf(4)->match( |
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static fn($value) => $value, |
348
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static fn() => null, |
349
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), |
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); |
351
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} |
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|
|
353
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public function testReturnNothingWhenTryingToAccessIndexOfUnknownValue() |
354
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{ |
355
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$sequence = new Defer((static function() { |
356
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if (false) { |
357
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yield 1; |
358
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} |
359
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})()); |
360
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361
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$this->assertNull( |
362
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$sequence->indexOf(1)->match( |
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|
363
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static fn($value) => $value, |
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static fn() => null, |
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), |
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); |
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} |
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|
369
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public function testIndices() |
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{ |
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$loaded = false; |
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$a = new Defer((static function() use (&$loaded) { |
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yield '1'; |
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yield '2'; |
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$loaded = true; |
376
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})()); |
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$b = $a->indices(); |
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379
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$this->assertFalse($loaded); |
380
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$this->assertSame(['1', '2'], \iterator_to_array($a->iterator())); |
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$this->assertInstanceOf(Defer::class, $b); |
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$this->assertSame([0, 1], \iterator_to_array($b->iterator())); |
383
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$this->assertTrue($loaded); |
384
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} |
385
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386
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public function testIndicesOnEmptySequence() |
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{ |
388
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$a = new Defer((static function() { |
389
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if (false) { |
390
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yield 1; |
391
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} |
392
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})()); |
393
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$b = $a->indices(); |
394
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|
395
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$this->assertSame([], \iterator_to_array($a->iterator())); |
396
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$this->assertInstanceOf(Defer::class, $b); |
397
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$this->assertSame([], \iterator_to_array($b->iterator())); |
398
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} |
399
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|
|
|
400
|
|
|
public function testMap() |
401
|
|
|
{ |
402
|
|
|
$loaded = false; |
403
|
|
|
$a = new Defer((static function() use (&$loaded) { |
404
|
|
|
yield 1; |
405
|
|
|
yield 2; |
406
|
|
|
yield 3; |
407
|
|
|
$loaded = true; |
408
|
|
|
})()); |
409
|
|
|
$b = $a->map(static fn($i) => $i * 2); |
410
|
|
|
|
411
|
|
|
$this->assertFalse($loaded); |
412
|
|
|
$this->assertSame([1, 2, 3], \iterator_to_array($a->iterator())); |
413
|
|
|
$this->assertInstanceOf(Defer::class, $b); |
414
|
|
|
$this->assertSame([2, 4, 6], \iterator_to_array($b->iterator())); |
415
|
|
|
$this->assertTrue($loaded); |
416
|
|
|
} |
417
|
|
|
|
418
|
|
|
public function testPad() |
419
|
|
|
{ |
420
|
|
|
$loaded = false; |
421
|
|
|
$a = new Defer((static function() use (&$loaded) { |
422
|
|
|
yield 1; |
423
|
|
|
yield 2; |
424
|
|
|
$loaded = true; |
425
|
|
|
})()); |
426
|
|
|
$b = $a->pad(4, 0); |
|
|
|
|
427
|
|
|
$c = $a->pad(1, 0); |
428
|
|
|
|
429
|
|
|
$this->assertFalse($loaded); |
430
|
|
|
$this->assertSame([1, 2], \iterator_to_array($a->iterator())); |
431
|
|
|
$this->assertInstanceOf(Defer::class, $b); |
432
|
|
|
$this->assertInstanceOf(Defer::class, $c); |
433
|
|
|
$this->assertSame([1, 2, 0, 0], \iterator_to_array($b->iterator())); |
434
|
|
|
$this->assertSame([1, 2], \iterator_to_array($c->iterator())); |
435
|
|
|
$this->assertTrue($loaded); |
436
|
|
|
} |
437
|
|
|
|
438
|
|
|
public function testPartition() |
439
|
|
|
{ |
440
|
|
|
$sequence = new Defer((static function() { |
441
|
|
|
yield 1; |
442
|
|
|
yield 2; |
443
|
|
|
yield 3; |
444
|
|
|
yield 4; |
445
|
|
|
})()); |
446
|
|
|
$partition = $sequence->partition(static fn($i) => $i % 2 === 0); |
447
|
|
|
|
448
|
|
|
$this->assertSame([1, 2, 3, 4], \iterator_to_array($sequence->iterator())); |
449
|
|
|
$this->assertInstanceOf(Map::class, $partition); |
450
|
|
|
$this->assertCount(2, $partition); |
451
|
|
|
$this->assertSame([2, 4], $this->get($partition, true)->toList()); |
452
|
|
|
$this->assertSame([1, 3], $this->get($partition, false)->toList()); |
453
|
|
|
} |
454
|
|
|
|
455
|
|
|
public function testSlice() |
456
|
|
|
{ |
457
|
|
|
$loaded = false; |
458
|
|
|
$a = new Defer((static function() use (&$loaded) { |
459
|
|
|
yield 2; |
460
|
|
|
yield 3; |
461
|
|
|
yield 4; |
462
|
|
|
yield 5; |
463
|
|
|
$loaded = true; |
464
|
|
|
})()); |
465
|
|
|
$b = $a->slice(1, 3); |
466
|
|
|
|
467
|
|
|
$this->assertFalse($loaded); |
468
|
|
|
$this->assertSame([2, 3, 4, 5], \iterator_to_array($a->iterator())); |
469
|
|
|
$this->assertInstanceOf(Defer::class, $b); |
470
|
|
|
$this->assertSame([3, 4], \iterator_to_array($b->iterator())); |
471
|
|
|
$this->assertTrue($loaded); |
472
|
|
|
} |
473
|
|
|
|
474
|
|
|
public function testTake() |
475
|
|
|
{ |
476
|
|
|
$loaded = false; |
477
|
|
|
$a = new Defer((static function() use (&$loaded) { |
478
|
|
|
yield 2; |
479
|
|
|
yield 3; |
480
|
|
|
yield 4; |
481
|
|
|
$loaded = true; |
482
|
|
|
})()); |
483
|
|
|
$b = $a->take(2); |
484
|
|
|
|
485
|
|
|
$this->assertFalse($loaded); |
486
|
|
|
$this->assertSame([2, 3, 4], \iterator_to_array($a->iterator())); |
487
|
|
|
$this->assertInstanceOf(Defer::class, $b); |
488
|
|
|
$this->assertSame([2, 3], \iterator_to_array($b->iterator())); |
489
|
|
|
$this->assertTrue($loaded); |
490
|
|
|
} |
491
|
|
|
|
492
|
|
|
public function testSequenceNotCompletelyLoadedWhenTakingFewerThanItsSize() |
493
|
|
|
{ |
494
|
|
|
$loaded = false; |
495
|
|
|
$a = new Defer((static function() use (&$loaded) { |
496
|
|
|
yield 2; |
497
|
|
|
yield 3; |
498
|
|
|
yield 4; |
499
|
|
|
$loaded = true; |
500
|
|
|
})()); |
501
|
|
|
$b = $a->take(2); |
502
|
|
|
|
503
|
|
|
$this->assertFalse($loaded); |
504
|
|
|
$this->assertInstanceOf(Defer::class, $b); |
505
|
|
|
$this->assertSame([2, 3], \iterator_to_array($b->iterator())); |
506
|
|
|
$this->assertFalse($loaded); |
507
|
|
|
} |
508
|
|
|
|
509
|
|
|
public function testTakeEnd() |
510
|
|
|
{ |
511
|
|
|
$a = new Defer((static function() { |
512
|
|
|
yield 2; |
513
|
|
|
yield 3; |
514
|
|
|
yield 4; |
515
|
|
|
})()); |
516
|
|
|
$b = $a->takeEnd(2); |
517
|
|
|
|
518
|
|
|
$this->assertSame([2, 3, 4], \iterator_to_array($a->iterator())); |
519
|
|
|
$this->assertInstanceOf(Implementation::class, $b); |
520
|
|
|
$this->assertSame([3, 4], \iterator_to_array($b->iterator())); |
521
|
|
|
} |
522
|
|
|
|
523
|
|
|
public function testAppend() |
524
|
|
|
{ |
525
|
|
|
$aLoaded = false; |
526
|
|
|
$bLoaded = false; |
527
|
|
|
$a = new Defer((static function() use (&$aLoaded) { |
528
|
|
|
yield 1; |
529
|
|
|
yield 2; |
530
|
|
|
$aLoaded = true; |
531
|
|
|
})()); |
532
|
|
|
$b = new Defer((static function() use (&$bLoaded) { |
533
|
|
|
yield 3; |
534
|
|
|
yield 4; |
535
|
|
|
$bLoaded = true; |
536
|
|
|
})()); |
537
|
|
|
$c = $a->append($b); |
538
|
|
|
|
539
|
|
|
$this->assertFalse($aLoaded); |
540
|
|
|
$this->assertFalse($bLoaded); |
541
|
|
|
$this->assertSame([1, 2], \iterator_to_array($a->iterator())); |
542
|
|
|
$this->assertSame([3, 4], \iterator_to_array($b->iterator())); |
543
|
|
|
$this->assertInstanceOf(Defer::class, $c); |
544
|
|
|
$this->assertSame([1, 2, 3, 4], \iterator_to_array($c->iterator())); |
545
|
|
|
$this->assertTrue($aLoaded); |
546
|
|
|
$this->assertTrue($bLoaded); |
547
|
|
|
} |
548
|
|
|
|
549
|
|
|
public function testIntersect() |
550
|
|
|
{ |
551
|
|
|
$aLoaded = false; |
552
|
|
|
$bLoaded = false; |
553
|
|
|
$a = new Defer((static function() use (&$aLoaded) { |
554
|
|
|
yield 1; |
555
|
|
|
yield 2; |
556
|
|
|
$aLoaded = true; |
557
|
|
|
})()); |
558
|
|
|
$b = new Defer((static function() use (&$bLoaded) { |
559
|
|
|
yield 2; |
560
|
|
|
yield 3; |
561
|
|
|
$bLoaded = true; |
562
|
|
|
})()); |
563
|
|
|
$c = $a->intersect($b); |
564
|
|
|
|
565
|
|
|
$this->assertFalse($aLoaded); |
566
|
|
|
$this->assertFalse($bLoaded); |
567
|
|
|
$this->assertSame([1, 2], \iterator_to_array($a->iterator())); |
568
|
|
|
$this->assertSame([2, 3], \iterator_to_array($b->iterator())); |
569
|
|
|
$this->assertInstanceOf(Defer::class, $c); |
570
|
|
|
$this->assertSame([2], \iterator_to_array($c->iterator())); |
571
|
|
|
$this->assertTrue($aLoaded); |
572
|
|
|
$this->assertTrue($bLoaded); |
573
|
|
|
} |
574
|
|
|
|
575
|
|
|
public function testAdd() |
576
|
|
|
{ |
577
|
|
|
$loaded = false; |
578
|
|
|
$a = new Defer((static function() use (&$loaded) { |
579
|
|
|
yield 1; |
580
|
|
|
$loaded = true; |
581
|
|
|
})()); |
582
|
|
|
$b = ($a)(2); |
583
|
|
|
|
584
|
|
|
$this->assertFalse($loaded); |
585
|
|
|
$this->assertSame([1], \iterator_to_array($a->iterator())); |
586
|
|
|
$this->assertInstanceOf(Defer::class, $b); |
587
|
|
|
$this->assertSame([1, 2], \iterator_to_array($b->iterator())); |
588
|
|
|
$this->assertTrue($loaded); |
589
|
|
|
} |
590
|
|
|
|
591
|
|
|
public function testSort() |
592
|
|
|
{ |
593
|
|
|
$a = new Defer((static function() { |
594
|
|
|
yield 1; |
595
|
|
|
yield 4; |
596
|
|
|
yield 3; |
597
|
|
|
yield 2; |
598
|
|
|
})()); |
599
|
|
|
$b = $a->sort(static fn($a, $b) => $a > $b ? 1 : -1); |
600
|
|
|
|
601
|
|
|
$this->assertSame([1, 4, 3, 2], \iterator_to_array($a->iterator())); |
602
|
|
|
$this->assertInstanceOf(Defer::class, $b); |
603
|
|
|
$this->assertSame([1, 2, 3, 4], \iterator_to_array($b->iterator())); |
604
|
|
|
} |
605
|
|
|
|
606
|
|
|
public function testReduce() |
607
|
|
|
{ |
608
|
|
|
$sequence = new Defer((static function() { |
609
|
|
|
yield 1; |
610
|
|
|
yield 2; |
611
|
|
|
yield 3; |
612
|
|
|
yield 4; |
613
|
|
|
})()); |
614
|
|
|
|
615
|
|
|
$this->assertSame(10, $sequence->reduce(0, static fn($sum, $i) => $sum + $i)); |
|
|
|
|
616
|
|
|
} |
617
|
|
|
|
618
|
|
|
public function testClear() |
619
|
|
|
{ |
620
|
|
|
$loaded = false; |
621
|
|
|
$a = new Defer((static function() use (&$loaded) { |
622
|
|
|
yield 1; |
623
|
|
|
yield 2; |
624
|
|
|
$loaded = true; |
625
|
|
|
})()); |
626
|
|
|
$b = $a->clear(); |
627
|
|
|
|
628
|
|
|
$this->assertFalse($loaded); |
629
|
|
|
$this->assertInstanceOf(Implementation::class, $b); |
630
|
|
|
$this->assertSame([], \iterator_to_array($b->iterator())); |
631
|
|
|
$this->assertFalse($loaded); |
632
|
|
|
$this->assertSame([1, 2], \iterator_to_array($a->iterator())); |
633
|
|
|
} |
634
|
|
|
|
635
|
|
|
public function testReverse() |
636
|
|
|
{ |
637
|
|
|
$loaded = false; |
638
|
|
|
$a = new Defer((static function() use (&$loaded) { |
639
|
|
|
yield 1; |
640
|
|
|
yield 2; |
641
|
|
|
yield 3; |
642
|
|
|
yield 4; |
643
|
|
|
$loaded = true; |
644
|
|
|
})()); |
645
|
|
|
$b = $a->reverse(); |
646
|
|
|
|
647
|
|
|
$this->assertFalse($loaded); |
648
|
|
|
$this->assertSame([1, 2, 3, 4], \iterator_to_array($a->iterator())); |
649
|
|
|
$this->assertInstanceOf(Defer::class, $b); |
650
|
|
|
$this->assertSame([4, 3, 2, 1], \iterator_to_array($b->iterator())); |
651
|
|
|
$this->assertTrue($loaded); |
652
|
|
|
} |
653
|
|
|
|
654
|
|
|
public function testEmpty() |
655
|
|
|
{ |
656
|
|
|
$aLoaded = false; |
657
|
|
|
$bLoaded = false; |
658
|
|
|
$a = new Defer((static function() use (&$aLoaded) { |
659
|
|
|
yield 1; |
660
|
|
|
$aLoaded = true; |
661
|
|
|
})()); |
662
|
|
|
$b = new Defer((static function() use (&$bLoaded) { |
663
|
|
|
if (false) { |
664
|
|
|
yield 1; |
665
|
|
|
} |
666
|
|
|
$bLoaded = true; |
667
|
|
|
})()); |
668
|
|
|
|
669
|
|
|
$this->assertFalse($aLoaded); |
670
|
|
|
$this->assertFalse($bLoaded); |
671
|
|
|
$this->assertTrue($b->empty()); |
672
|
|
|
$this->assertFalse($a->empty()); |
673
|
|
|
$this->assertFalse($aLoaded); // still false as we don't need to load the full iterator to know if it's empty |
674
|
|
|
$this->assertTrue($bLoaded); |
675
|
|
|
} |
676
|
|
|
|
677
|
|
|
public function testFind() |
678
|
|
|
{ |
679
|
|
|
$count = 0; |
680
|
|
|
$sequence = new Defer((static function() use (&$count) { |
681
|
|
|
++$count; |
682
|
|
|
yield 1; |
683
|
|
|
++$count; |
684
|
|
|
yield 2; |
685
|
|
|
++$count; |
686
|
|
|
yield 3; |
687
|
|
|
})()); |
688
|
|
|
|
689
|
|
|
$this->assertSame( |
690
|
|
|
1, |
691
|
|
|
$sequence->find(static fn($i) => $i === 1)->match( |
692
|
|
|
static fn($i) => $i, |
693
|
|
|
static fn() => null, |
694
|
|
|
), |
695
|
|
|
); |
696
|
|
|
$this->assertSame(1, $count); |
697
|
|
|
$this->assertSame( |
698
|
|
|
2, |
699
|
|
|
$sequence->find(static fn($i) => $i === 2)->match( |
700
|
|
|
static fn($i) => $i, |
701
|
|
|
static fn() => null, |
702
|
|
|
), |
703
|
|
|
); |
704
|
|
|
$this->assertSame(2, $count); |
705
|
|
|
$this->assertSame( |
706
|
|
|
3, |
707
|
|
|
$sequence->find(static fn($i) => $i === 3)->match( |
708
|
|
|
static fn($i) => $i, |
709
|
|
|
static fn() => null, |
710
|
|
|
), |
711
|
|
|
); |
712
|
|
|
$this->assertSame(3, $count); |
713
|
|
|
|
714
|
|
|
$this->assertNull( |
715
|
|
|
$sequence->find(static fn($i) => $i === 0)->match( |
716
|
|
|
static fn($i) => $i, |
717
|
|
|
static fn() => null, |
718
|
|
|
), |
719
|
|
|
); |
720
|
|
|
} |
721
|
|
|
|
722
|
|
|
public function get($map, $index) |
723
|
|
|
{ |
724
|
|
|
return $map->get($index)->match( |
725
|
|
|
static fn($value) => $value, |
726
|
|
|
static fn() => null, |
727
|
|
|
); |
728
|
|
|
} |
729
|
|
|
} |
730
|
|
|
|