Adding tests for native weak references

Author: moufmouf

tests/WeakreferenceObjectStorageTest.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace TheCodingMachine\TDBM;
+
+use PHPUnit\Framework\TestCase;
+
+class WeakreferenceObjectStorageTest extends TestCase
+{
+    public function testObjectStorage(): void
+    {
+        if (!\class_exists(\WeakReference::class)) {
+            $this->markTestSkipped('PHP 7.4+ only');
+            return;
+        }
+        $objectStorage = new NativeWeakrefObjectStorage();
+        $this->assertNull($objectStorage->get('foo', 42));
+        $dbRow = $this->createMock(DbRow::class);
+        $objectStorage->set('foo', 42, $dbRow);
+        $this->assertSame($dbRow, $objectStorage->get('foo', 42));
+        $objectStorage->remove('foo', 42);
+        $this->assertNull($objectStorage->get('foo', 42));
+    }
+
+    public function testDanglingPointers(): void
+    {
+        if (!\class_exists(\WeakReference::class)) {
+            $this->markTestSkipped('PHP 7.4+ only');
+            return;
+        }
+        $objectStorage = new NativeWeakrefObjectStorage();
+        $dbRow = $this->createMock(DbRow::class);
+
+        for ($i=0; $i<10001; $i++) {
+            $objectStorage->set('foo', $i, clone $dbRow);
+        }
+        $this->assertNull($objectStorage->get('foo', 42));
+    }
+}