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✏️ Editing: DoubleEndedQueueTest.php

<?php

declare(strict_types=1);

namespace Ramsey\Collection\Test;

use Mockery;
use Mockery\MockInterface;
use Ramsey\Collection\DoubleEndedQueue;
use Ramsey\Collection\Exception\InvalidArgumentException;
use Ramsey\Collection\Exception\NoSuchElementException;
use stdClass;

/**
 * @covers \Ramsey\Collection\DoubleEndedQueue
 */
class DoubleEndedQueueTest extends TestCase
{
    public function testConstructorSetsType(): void
    {
        /** @var DoubleEndedQueue<int> $queue */
        $queue = new DoubleEndedQueue('integer');

$this->assertSame('integer', $queue->getType());
    }

public function testConstructorWithData(): void
    {
        /** @var DoubleEndedQueue<string> $queue */
        $queue = new DoubleEndedQueue('string', ['Foo', 'Bar']);

$this->assertCount(2, $queue);
    }

public function testOffsetSet(): void
    {
        /** @var DoubleEndedQueue<string> $queue */
        $queue = new DoubleEndedQueue('string');
        $queue[] = $this->faker->text();

$this->assertCount(1, $queue);
    }

public function testOffsetSetThrowsException(): void
    {
        /** @var DoubleEndedQueue<string> $queue */
        $queue = new DoubleEndedQueue('string');

$this->expectException(InvalidArgumentException::class);
        $this->expectExceptionMessage('Value must be of type string; value is 42');

/**
         * @phpstan-ignore-next-line
         */
        $queue[] = 42;
    }

public function testValuesCanBeAdded(): void
    {
        /** @var DoubleEndedQueue<string> $queue */
        $queue = new DoubleEndedQueue('string');

$this->assertTrue($queue->add('Foo'));
        $this->assertCount(1, $queue);
    }

public function testAddMayAddSameObjectMultipleTimes(): void
    {
        $expectedCount = 4;

$obj1 = new stdClass();
        $obj1->name = $this->faker->name();

/** @var DoubleEndedQueue<stdClass> $queue1 */
        $queue1 = new DoubleEndedQueue(stdClass::class);

/** @var DoubleEndedQueue<stdClass> $queue2 */
        $queue2 = new DoubleEndedQueue(stdClass::class);

// Add the same object multiple times
        for ($i = 0; $i < $expectedCount; $i++) {
            $queue1[] = $obj1;
        }

// Test the add() method
        for ($i = 0; $i < $expectedCount; $i++) {
            $queue2->add($obj1);
        }

$this->assertCount($expectedCount, $queue1);
        $this->assertCount($expectedCount, $queue2);
    }

public function testOfferAddsElement(): void
    {
        /** @var DoubleEndedQueue<stdClass> $queue */
        $queue = new DoubleEndedQueue(stdClass::class);

$object = new stdClass();
        $object->name = $this->faker->name();

$queue->offer($object);

$this->assertCount(1, $queue);
        $this->assertSame($object, $queue->poll());
    }

public function testIterateOverQueue(): void
    {
        /** @var DoubleEndedQueue<stdClass> $queue */
        $queue = new DoubleEndedQueue(stdClass::class);

for ($i = 0; $i < 4; $i++) {
            $object = new stdClass();
            $object->id = $i;
            $queue->add($object);
        }

$id = 0;
        foreach ($queue as $item) {
            $this->assertSame($id, $item->id);
            $id++;
        }
    }

public function testElementDontRemovePeekFromQueue(): void
    {
        $object1 = new stdClass();
        $object1->name = 'foo';

$object2 = new stdClass();
        $object2->name = 'bar';

/** @var DoubleEndedQueue<stdClass> $queue */
        $queue = new DoubleEndedQueue(stdClass::class);
        $queue->add($object1);
        $queue->add($object2);

$this->assertSame($object1, $queue->element());
        $this->assertSame($object1, $queue->element());
        $this->assertCount(2, $queue);
    }

public function testElementThrowsExceptionIfEmpty(): void
    {
        /** @var DoubleEndedQueue<string> $queue */
        $queue = new DoubleEndedQueue('string');

$this->expectException(NoSuchElementException::class);
        $this->expectExceptionMessage('Can\'t return element from Queue. Queue is empty.');

$queue->element();
    }

public function testPeekReturnsObjects(): void
    {
        $object1 = new stdClass();
        $object1->name = $this->faker->name();

$object2 = new stdClass();
        $object2->name = $this->faker->name();

/** @var DoubleEndedQueue<stdClass> $queue */
        $queue = new DoubleEndedQueue(stdClass::class);
        $queue->add($object1);
        $queue->add($object2);

$this->assertSame($object1, $queue->peek());
        $this->assertSame($object1, $queue->peek());
    }

public function testPeekReturnsNullIfEmpty(): void
    {
        /** @var DoubleEndedQueue<bool> $queue */
        $queue = new DoubleEndedQueue('bool');

$this->assertNull($queue->peek());
    }

public function testPollRemovesTheHead(): void
    {
        /** @var DoubleEndedQueue<string> $queue */
        $queue = new DoubleEndedQueue('string');

$queue->add('Foo');
        $queue->add('Bar');

$this->assertCount(2, $queue);
        $this->assertSame('Foo', $queue->poll());
        $this->assertCount(1, $queue);
        $this->assertSame('Bar', $queue->poll());
        $this->assertCount(0, $queue);
    }

public function testPollReturnsNullIfEmpty(): void
    {
        /** @var DoubleEndedQueue<stdClass> $queue */
        $queue = new DoubleEndedQueue(stdClass::class);

$this->assertNull($queue->poll());
    }

public function testRemove(): void
    {
        $obj1 = new stdClass();
        $obj1->name = $this->faker->name();

/** @var DoubleEndedQueue<stdClass> $queue */
        $queue = new DoubleEndedQueue(stdClass::class);

// Add the same object multiple times
        $queue->add($obj1);
        $queue->add($obj1);
        $queue->add($obj1);

$this->assertCount(3, $queue);
        $this->assertSame($obj1, $queue->remove());
        $this->assertCount(2, $queue);
    }

public function testRemoveThrowsExceptionIfEmpty(): void
    {
        $object1 = new stdClass();
        $object1->name = $this->faker->name();

$object2 = new stdClass();
        $object2->name = $this->faker->name();

/** @var DoubleEndedQueue<stdClass> $queue */
        $queue = new DoubleEndedQueue(stdClass::class);
        $queue->add($object1);
        $queue->add($object2);

$this->assertSame($object1, $queue->remove());
        $this->assertSame($object2, $queue->remove());

$this->expectException(NoSuchElementException::class);
        $this->expectExceptionMessage('Can\'t return element from Queue. Queue is empty.');

$queue->remove();
    }

public function testMixedUsageOfAllMethods(): void
    {
        /** @var DoubleEndedQueue<string> $queue */
        $queue = new DoubleEndedQueue('string');

$queue->add('Foo');
        $queue->add('Bar');

$this->assertSame('Foo', $queue->peek());
        $this->assertSame('Foo', $queue->remove());

$queue->add('Foo');

$this->assertSame('Bar', $queue->peek());
        $this->assertSame('Bar', $queue->poll());

$queue->offer('FooBar');

$this->assertSame('Foo', $queue->remove());

$this->assertCount(1, $queue);
    }

public function testValuesCanBeAddedToTheHead(): void
    {
        /** @var DoubleEndedQueue<string> $queue */
        $queue = new DoubleEndedQueue('string', ['Baz']);

$this->assertTrue($queue->addFirst('Bar'));
        $this->assertTrue($queue->addFirst('Foo'));
        $this->assertCount(3, $queue);
        $this->assertSame('Foo', $queue->firstElement());
        $this->assertSame('Baz', $queue->lastElement());
        $this->assertSame(['Foo', 'Bar', 'Baz'], $queue->toArray());
    }

public function testAddFirstThrowsExceptionForIncorrectTypes(): void
    {
        /** @var DoubleEndedQueue<string> $queue */
        $queue = new DoubleEndedQueue('string');

$this->expectException(InvalidArgumentException::class);
        $this->expectExceptionMessage('Value must be of type string; value is 42');

/**
         * @phpstan-ignore-next-line
         */
        $queue->addFirst(42);
    }

public function testValuesCanBeAddedToTheTail(): void
    {
        /** @var DoubleEndedQueue<string> $queue */
        $queue = new DoubleEndedQueue('string', ['Bar']);

$this->assertTrue($queue->addLast('Foo'));
        $this->assertCount(2, $queue);
        $this->assertSame('Bar', $queue->firstElement());
        $this->assertSame('Foo', $queue->lastElement());
    }

public function testFirstElementDontRemoveFromQueue(): void
    {
        /** @var DoubleEndedQueue<string> $queue */
        $queue = new DoubleEndedQueue('string', ['foo', 'bar']);

$this->assertSame('foo', $queue->firstElement());
        $this->assertSame('foo', $queue->firstElement());
        $this->assertCount(2, $queue);
    }

public function testLastElementDontRemoveFromQueue(): void
    {
        /** @var DoubleEndedQueue<string> $queue */
        $queue = new DoubleEndedQueue('string', ['foo', 'bar']);

$this->assertSame('bar', $queue->lastElement());
        $this->assertSame('bar', $queue->lastElement());
        $this->assertCount(2, $queue);
    }

public function testFirstElementThrowsExceptionIfEmpty(): void
    {
        /** @var DoubleEndedQueue<string> $queue */
        $queue = new DoubleEndedQueue('string');

$this->expectException(NoSuchElementException::class);
        $this->expectExceptionMessage('Can\'t return element from Queue. Queue is empty.');

$queue->firstElement();
    }

public function testLastElementThrowsExceptionIfEmpty(): void
    {
        /** @var DoubleEndedQueue<string> $queue */
        $queue = new DoubleEndedQueue('string');

$this->expectException(NoSuchElementException::class);
        $this->expectExceptionMessage('Can\'t return element from Queue. Queue is empty.');

$queue->lastElement();
    }

public function testPeekFirstReturnsObjects(): void
    {
        /** @var DoubleEndedQueue<string> $queue */
        $queue = new DoubleEndedQueue('string', ['foo', 'bar']);

$this->assertSame('foo', $queue->peekFirst());
        $this->assertSame('foo', $queue->peekFirst());
    }

public function testPeekLastReturnsObjects(): void
    {
        /** @var DoubleEndedQueue<string> $queue */
        $queue = new DoubleEndedQueue('string', ['foo', 'bar']);

$this->assertSame('bar', $queue->peekLast());
        $this->assertSame('bar', $queue->peekLast());
    }

public function testPeekFirstReturnsNullIfEmpty(): void
    {
        /** @var DoubleEndedQueue<bool> $queue */
        $queue = new DoubleEndedQueue('bool');

$this->assertNull($queue->peekFirst());
    }

public function testPeekLastReturnsNullIfEmpty(): void
    {
        /** @var DoubleEndedQueue<bool> $queue */
        $queue = new DoubleEndedQueue('bool');

$this->assertNull($queue->peekLast());
    }

public function testPollFirstRemovesTheHead(): void
    {
        /** @var DoubleEndedQueue<string> $queue */
        $queue = new DoubleEndedQueue('string', ['foo', 'bar']);

$this->assertCount(2, $queue);
        $this->assertSame('foo', $queue->pollFirst());
        $this->assertCount(1, $queue);
        $this->assertSame('bar', $queue->pollFirst());
        $this->assertCount(0, $queue);
    }

public function testPollLastRemovesTheTail(): void
    {
        /** @var DoubleEndedQueue<string> $queue */
        $queue = new DoubleEndedQueue('string', ['foo', 'bar']);

$this->assertCount(2, $queue);
        $this->assertSame('bar', $queue->pollLast());
        $this->assertCount(1, $queue);
        $this->assertSame('foo', $queue->pollLast());
        $this->assertCount(0, $queue);
    }

public function testPollFirstReturnsNullIfEmpty(): void
    {
        /** @var DoubleEndedQueue<stdClass> $queue */
        $queue = new DoubleEndedQueue(stdClass::class);

$this->assertNull($queue->pollFirst());
    }

public function testPollLastReturnsNullIfEmpty(): void
    {
        /** @var DoubleEndedQueue<stdClass> $queue */
        $queue = new DoubleEndedQueue(stdClass::class);

$this->assertNull($queue->pollLast());
    }

public function testRemoveFirst(): void
    {
        /** @var DoubleEndedQueue<string> $queue */
        $queue = new DoubleEndedQueue('string', ['foo', 'bar', 'biz']);

$this->assertCount(3, $queue);
        $this->assertSame('foo', $queue->removeFirst());
        $this->assertCount(2, $queue);
        $this->assertSame('bar', $queue->firstElement());
        $this->assertSame('biz', $queue->lastElement());
    }

public function testRemoveLast(): void
    {
        /** @var DoubleEndedQueue<string> $queue */
        $queue = new DoubleEndedQueue('string', ['foo', 'bar', 'biz']);

$this->assertCount(3, $queue);
        $this->assertSame('biz', $queue->removeLast());
        $this->assertCount(2, $queue);
        $this->assertSame('foo', $queue->firstElement());
        $this->assertSame('bar', $queue->lastElement());
    }

public function testRemoveFirstThrowsExceptionIfEmpty(): void
    {
        /** @var DoubleEndedQueue<string> $queue */
        $queue = new DoubleEndedQueue('string', ['foo', 'bar']);

$this->assertSame('foo', $queue->removeFirst());
        $this->assertSame('bar', $queue->removeFirst());

$this->expectException(NoSuchElementException::class);
        $this->expectExceptionMessage('Can\'t return element from Queue. Queue is empty.');

$queue->removeFirst();
    }

public function testRemoveLastThrowsExceptionIfEmpty(): void
    {
        /** @var DoubleEndedQueue<string> $queue */
        $queue = new DoubleEndedQueue('string', ['foo', 'bar']);

$this->assertSame('bar', $queue->removeLast());
        $this->assertSame('foo', $queue->removeLast());

$this->expectException(NoSuchElementException::class);
        $this->expectExceptionMessage('Can\'t return element from Queue. Queue is empty.');

$queue->removeLast();
    }

public function testMixedUsageOfAllQueueAndDequeueMethods(): void
    {
        /** @var DoubleEndedQueue<string> $deque */
        $deque = new DoubleEndedQueue('string');

$deque->add('foo');
        $deque->add('bar');
        $deque->addLast('yop');
        $deque->addFirst('biz');

// deque should contain: biz, foo, bar, yop

$this->assertSame('biz', $deque->peek());
        $this->assertSame('biz', $deque->peekFirst());
        $this->assertSame('yop', $deque->peekLast());
        $this->assertSame('biz', $deque->remove());

$deque->add('biz');

// deque should contain: foo, bar, yop, biz

$this->assertSame('foo', $deque->peek());
        $this->assertSame('foo', $deque->poll());
        $this->assertSame('biz', $deque->peekLast());
        $this->assertSame('biz', $deque->pollLast());

$deque->offerLast('foobar');
        $deque->offerFirst('barfoo');

// deque should contain: barfoo, bar, yop, foobar

$this->assertSame('foobar', $deque->removeLast());
        $this->assertSame('barfoo', $deque->removeFirst());

// deque should contain: bar, yop

$this->assertCount(2, $deque);
        $this->assertSame('bar', $deque->firstElement());
        $this->assertSame('yop', $deque->lastElement());
    }

public function testOfferFirstReturnsFalseOnException(): void
    {
        $element = 'foo';

/** @var DoubleEndedQueue<string> & MockInterface $deque */
        $deque = Mockery::mock(DoubleEndedQueue::class);
        $deque->shouldReceive('offerFirst')->passthru();

$deque->expects('addFirst')->with($element)->andThrow(InvalidArgumentException::class);

$this->assertFalse($deque->offerFirst($element));
    }
}

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