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Copy pathTraverseLeftRightTreeTest.php
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123 lines (106 loc) · 3.32 KB
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<?php
declare(strict_types=1);
namespace Plook\Tests\Tree\Array;
use PHPUnit\Framework\Attributes\CoversClass;
use PHPUnit\Framework\TestCase;
use Plook\Tree\Array\TraverseLeftRightTree;
#[CoversClass(TraverseLeftRightTree::class)]
final class TraverseLeftRightTreeTest extends TestCase
{
/** @var TraverseLeftRightTree<array{id: int, left: int, right: int}> */
private TraverseLeftRightTree $traverseLeftRightTree;
protected function setUp(): void
{
$this->traverseLeftRightTree = new TraverseLeftRightTree();
}
public function testTraverseTreeWithOneNode(): void
{
$givenTree = [
['id' => 1, 'left' => 1, 'right' => 2],
];
/** @var list<string> $callOrder */
$callOrder = [];
($this->traverseLeftRightTree)(
$givenTree,
'left',
'right',
static function (array $row) use (&$callOrder): void {
$callOrder[] = 'before ' . $row['id'];
},
static function (array $row) use (&$callOrder): void {
$callOrder[] = 'after ' . $row['id'];
},
);
self::assertSame([
'before 1',
'after 1',
], $callOrder);
}
public function testTraverseTreeWithOneNodeAndOneChild(): void
{
$givenTree = [
['id' => 1, 'left' => 1, 'right' => 4],
['id' => 2, 'left' => 2, 'right' => 3],
];
/** @var list<string> $callOrder */
$callOrder = [];
($this->traverseLeftRightTree)(
$givenTree,
'left',
'right',
static function (array $row) use (&$callOrder): void {
$callOrder[] = 'before ' . $row['id'];
},
static function (array $row) use (&$callOrder): void {
$callOrder[] = 'after ' . $row['id'];
},
);
self::assertSame([
'before 1',
'before 2',
'after 2',
'after 1',
], $callOrder);
}
public function testTraverseTreeWithSevenNodes(): void
{
$givenTree = [
['id' => 1, 'left' => 1, 'right' => 14],
['id' => 2, 'left' => 2, 'right' => 7],
['id' => 3, 'left' => 3, 'right' => 4],
['id' => 4, 'left' => 5, 'right' => 6],
['id' => 5, 'left' => 8, 'right' => 13],
['id' => 6, 'left' => 9, 'right' => 10],
['id' => 7, 'left' => 11, 'right' => 12],
];
/** @var list<string> $callOrder */
$callOrder = [];
($this->traverseLeftRightTree)(
$givenTree,
'left',
'right',
static function (array $row) use (&$callOrder): void {
$callOrder[] = 'before ' . $row['id'];
},
static function (array $row) use (&$callOrder): void {
$callOrder[] = 'after ' . $row['id'];
},
);
self::assertSame([
'before 1',
'before 2',
'before 3',
'after 3',
'before 4',
'after 4',
'after 2',
'before 5',
'before 6',
'after 6',
'before 7',
'after 7',
'after 5',
'after 1',
], $callOrder);
}
}