feat: ForecastMapper and file Cache

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
2026-09-11 14:38:30 +02:00
parent d657fd069f
commit 89e1e544c5
6 changed files with 253 additions and 1 deletions
@@ -0,0 +1,72 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Weerscherm\Tests;
+
+use PHPUnit\Framework\TestCase;
+use Weerscherm\Cache;
+
+final class CacheTest extends TestCase
+{
+    private string $dir;
+
+    protected function setUp(): void
+    {
+        $this->dir = sys_get_temp_dir() . '/weerscherm-cache-' . uniqid();
+    }
+
+    protected function tearDown(): void
+    {
+        array_map('unlink', glob($this->dir . '/*') ?: []);
+        @rmdir($this->dir);
+    }
+
+    public function testWriteThenReadRoundTrip(): void
+    {
+        $cache = new Cache($this->dir);
+        $cache->write('stations', ['a' => 1.5, 'b' => null], 1000);
+
+        self::assertSame(['data' => ['a' => 1.5, 'b' => null], 'stored_at' => 1000], $cache->read('stations'));
+    }
+
+    public function testMissingKeyReadsNull(): void
+    {
+        self::assertNull((new Cache($this->dir))->read('nope'));
+    }
+
+    public function testCorruptFileReadsNull(): void
+    {
+        mkdir($this->dir, 0700, true);
+        file_put_contents($this->dir . '/broken.json', '{not json');
+
+        self::assertNull((new Cache($this->dir))->read('broken'));
+    }
+
+    public function testFreshness(): void
+    {
+        $cache = new Cache($this->dir);
+        $cache->write('k', [], 1000);
+
+        self::assertTrue($cache->isFresh('k', 300, 1299));
+        self::assertFalse($cache->isFresh('k', 300, 1300));
+        self::assertFalse($cache->isFresh('missing', 300, 1000));
+    }
+
+    public function testKeyIsSanitised(): void
+    {
+        $cache = new Cache($this->dir);
+        $cache->write('../Evil Key', ['x' => 1], 1);
+
+        self::assertFileExists($this->dir . '/evil_key.json');
+        self::assertSame(['x' => 1], $cache->read('../Evil Key')['data']);
+    }
+
+    public function testWriteCreatesDirectory(): void
+    {
+        (new Cache($this->dir . '/nested'))->write('k', [], 1);
+        self::assertDirectoryExists($this->dir . '/nested');
+        unlink($this->dir . '/nested/k.json');
+        rmdir($this->dir . '/nested');
+    }
+}