initial commit

tests/Unit/Game/ZombieTest.php

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+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Unit\Game;
+
+use App\Game\Entities\Zombie;
+use App\Game\EntityList;
+use App\Game\InputState;
+use App\Game\Player;
+use App\Game\Room;
+use App\Game\Vector2;
+use PHPUnit\Framework\Attributes\Test;
+use PHPUnit\Framework\TestCase;
+
+final class ZombieTest extends TestCase
+{
+    #[Test]
+    public function zombieChasesTarget(): void
+    {
+        $room = new Room('test');
+        $list = $room->entities;
+        $player = new Player('p1', 'Tester', new InputState(), $list, $room, ['x' => 100.0, 'y' => 0.0]);
+        $room->addPlayer($player);
+        $zombie = new Zombie(0.0, 0.0, $list, $room, ['emergeTime' => 0.0]);
+        $list->append($zombie);
+        $zombie->target = $player;
+        $zombie->update(0.1);
+        $this->assertGreaterThan(0.0, $zombie->pos->x, 'zombie moves toward player x');
+        $this->assertEqualsWithDelta(0.0, $zombie->pos->y, 1e-6, 'zombie stays on same y');
+    }
+
+    #[Test]
+    public function hitReducesHealthAndKnocksBack(): void
+    {
+        $room = new Room('test');
+        $zombie = new Zombie(10.0, 0.0, $room->entities, $room);
+        $impulse = new Vector2(1.0, 0.0);
+        $dead = $zombie->hit($impulse, 1);
+        $this->assertTrue($dead);
+        $this->assertSame(0, $zombie->health);
+    }
+
+    #[Test]
+    public function hitDoesNotKillAtHighHealth(): void
+    {
+        $room = new Room('test');
+        $zombie = new Zombie(10.0, 0.0, $room->entities, $room, ['health' => 10]);
+        $dead = $zombie->hit(new Vector2(1.0, 0.0), 1);
+        $this->assertFalse($dead);
+        $this->assertSame(9, $zombie->health);
+    }
+
+    #[Test]
+    public function dieRemovesFromContainer(): void
+    {
+        $room = new Room('test');
+        $zombie = new Zombie(5.0, 5.0, $room->entities, $room);
+        $room->entities->append($zombie);
+        $zombie->die();
+        $this->assertCount(0, $room->entities);
+    }
+
+    #[Test]
+    public function emergeBlocksMovement(): void
+    {
+        $room = new Room('test');
+        $zombie = new Zombie(0.0, 0.0, $room->entities, $room, ['emergeTime' => 1.0]);
+        $room->entities->append($zombie);
+        $zombie->target = new Player('p1', 'T', new InputState(), $room->entities, $room, ['x' => 100.0, 'y' => 100.0]);
+        $zombie->update(0.1);
+        $this->assertSame(0.0, $zombie->pos->x, 'zombie blocked during emerge');
+    }
+}