Initial commit

tests/Unit/Picture/DoomPaletteTest.php

@@ -0,0 +1,27 @@
+<?php
+
+use Doom\Picture\DoomPalette;
+
+test('provides a valid default doom palette', function (): void {
+    $palette = DoomPalette::default();
+
+    expect($palette->toArray())->toHaveCount(256);
+    expect($palette->colorAt(0))->toBe([0, 0, 0]);
+    expect($palette->colorAt(1))->toBe([31, 23, 11]);
+});
+
+test('extracts palette data from PLAYPAL bytes', function (): void {
+    $palette0 = str_repeat("\x00\x00\x00", 256);
+    $palette1 = str_repeat("\x10\x20\x30", 256);
+
+    $palette = DoomPalette::fromPlaypal($palette0 . $palette1, 1);
+
+    expect($palette->toArray())->toHaveCount(256);
+    expect($palette->colorAt(0))->toBe([16, 32, 48]);
+    expect($palette->colorAt(255))->toBe([16, 32, 48]);
+});
+
+test('rejects invalid PLAYPAL palette selection', function (): void {
+    expect(fn () => DoomPalette::fromPlaypal("\x00", 0))->toThrow(RuntimeException::class);
+    expect(fn () => DoomPalette::fromPlaypal(str_repeat("\x00", 768), -1))->toThrow(InvalidArgumentException::class);
+});

tests/Unit/Picture/PaletteTest.php

@@ -0,0 +1,16 @@
+<?php
+
+use Doom\Picture\Palette;
+
+test('creates palette from bytes and roundtrips', function (): void {
+    $bytes = str_repeat("\x01\x02\x03", 256);
+    $palette = Palette::fromBytes($bytes);
+
+    expect($palette->colorAt(0))->toBe([1, 2, 3]);
+    expect($palette->colorAt(255))->toBe([1, 2, 3]);
+    expect($palette->toBytes())->toBe($bytes);
+});
+
+test('rejects invalid palette byte length', function (): void {
+    expect(fn () => Palette::fromBytes("\x00"))->toThrow(InvalidArgumentException::class);
+});