Inital commit after splitting from project

2026-07-21 22:00:16 +02:00
commit f299f2c60e
49 changed files with 3102 additions and 0 deletions
@@ -0,0 +1,75 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tez\Utils\Tests\Arr;
+
+use PHPUnit\Framework\TestCase;
+use Tez\Utils\Arr\Sliding;
+
+final class SlidingTest extends TestCase
+{
+    public function testDefaultStepOfOne(): void
+    {
+        $result = Sliding::window([1, 2, 3, 4, 5], size: 3);
+
+        self::assertSame([[1, 2, 3], [2, 3, 4], [3, 4, 5]], $result);
+    }
+
+    public function testCustomStep(): void
+    {
+        $result = Sliding::window([1, 2, 3, 4, 5], size: 3, step: 2);
+
+        self::assertSame([[1, 2, 3], [3, 4, 5]], $result);
+    }
+
+    public function testStepEqualsSizeProducesNonOverlappingChunks(): void
+    {
+        $result = Sliding::window([1, 2, 3, 4, 5, 6], size: 2, step: 2);
+
+        self::assertSame([[1, 2], [3, 4], [5, 6]], $result);
+    }
+
+    public function testArraySmallerThanWindowReturnsEmpty(): void
+    {
+        self::assertSame([], Sliding::window([1, 2], size: 5));
+    }
+
+    public function testExactFitProducesOneWindow(): void
+    {
+        $result = Sliding::window([1, 2, 3], size: 3);
+
+        self::assertSame([[1, 2, 3]], $result);
+    }
+
+    public function testSizeOneReturnsEachElementWrapped(): void
+    {
+        $result = Sliding::window([1, 2, 3], size: 1);
+
+        self::assertSame([[1], [2], [3]], $result);
+    }
+
+    public function testEmptyArrayReturnsEmpty(): void
+    {
+        self::assertSame([], Sliding::window([], size: 3));
+    }
+
+    public function testInvalidSizeThrows(): void
+    {
+        $this->expectException(\InvalidArgumentException::class);
+        Sliding::window([1, 2, 3], size: 0);
+    }
+
+    public function testInvalidStepThrows(): void
+    {
+        $this->expectException(\InvalidArgumentException::class);
+        Sliding::window([1, 2, 3], size: 2, step: 0);
+    }
+
+    public function testAssociativeKeysAreStripped(): void
+    {
+        $result = Sliding::window(['a' => 1, 'b' => 2, 'c' => 3], size: 2);
+
+        self::assertSame([[1, 2], [2, 3]], $result);
+    }
+}