$queue */ $queue = new Queue('integer'); $this->assertSame('integer', $queue->getType()); } public function testConstructorWithData(): void { /** @var Queue $queue */ $queue = new Queue('string', ['Foo', 'Bar']); $this->assertCount(2, $queue); } public function testOffsetSet(): void { /** @var Queue $queue */ $queue = new Queue('string'); $queue[] = $this->faker->text(); $this->assertCount(1, $queue); } public function testOffsetSetThrowsException(): void { /** @var Queue $queue */ $queue = new Queue('string'); $this->expectException(InvalidArgumentException::class); $this->expectExceptionMessage('Value must be of type string; value is 42'); /** * @phpstan-ignore-next-line * @psalm-suppress InvalidArgument */ $queue[] = 42; } public function testValuesCanBeAdded(): void { /** @var Queue $queue */ $queue = new Queue('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 Queue $queue1 */ $queue1 = new Queue(stdClass::class); /** @var Queue $queue2 */ $queue2 = new Queue(stdClass::class); // Add the same object multiple times for ($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 Queue $queue */ $queue = new Queue(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 Queue $queue */ $queue = new Queue(stdClass::class); for ($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 Queue $queue */ $queue = new Queue(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 Queue $queue */ $queue = new Queue('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 Queue $queue */ $queue = new Queue(stdClass::class); $queue->add($object1); $queue->add($object2); $this->assertSame($object1, $queue->peek()); $this->assertSame($object1, $queue->peek()); } public function testPeekReturnsNullIfEmpty(): void { /** @var Queue $queue */ $queue = new Queue('bool'); $this->assertNull($queue->peek()); } public function testPollRemovesTheHead(): void { /** @var Queue $queue */ $queue = new Queue('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 Queue $queue */ $queue = new Queue(stdClass::class); $this->assertNull($queue->poll()); } public function testRemove(): void { $obj1 = new stdClass(); $obj1->name = $this->faker->name(); /** @var Queue $queue */ $queue = new Queue(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 Queue $queue */ $queue = new Queue(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 Queue $queue */ $queue = new Queue('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 testOfferReturnsFalseOnException(): void { $element = 'foo'; /** @var Queue & MockInterface $queue */ $queue = Mockery::mock(Queue::class); $queue->shouldReceive('offer')->passthru(); $queue->expects('add')->with($element)->andThrow(InvalidArgumentException::class); $this->assertFalse($queue->offer($element)); } }