adjust test for sqlite issue

Author: mvorisek

tests/TypecastingTest.php

@@ -8,6 +8,7 @@
 use Atk4\Data\Model;
 use Atk4\Data\Schema\TestCase;
 use Doctrine\DBAL\Platforms\OraclePlatform;
+use Doctrine\DBAL\Platforms\SqlitePlatform;
 
 class TypecastingTest extends TestCase
 {
@@ -110,10 +111,16 @@ public function testType(): void
 
         $this->assertEquals($first, $duplicate);
 
-        $m->load(2)->set('float', 8.202343767574731)->save();
+        $m->load(2)->set('float', 8.20234376757474)->save();
         // pack is needed to compare float numbers exactly, see https://github.com/sebastianbergmann/phpunit/issues/4966
-        // remove bin2hex/pack once fixed in phpunit officially
-        $this->assertSame(bin2hex(pack('e', 8.202343767574731)), bin2hex(pack('e', $m->load(2)->get('float'))));
+        // remove bin2hex/pack once phpunit is fixed officially
+        $this->assertSame(bin2hex(pack('e', 8.20234376757474)), bin2hex(pack('e', $m->load(2)->get('float'))));
+        $m->load(2)->set('float', 8.202343767574732)->save();
+        // pdo_sqlite in truncating float when converted to string, see https://github.com/php/php-src/issues/8510
+        // fixed since PHP 8.1, but if converted in SQL to string explicitly, the result is still wrong
+        if (!$this->getDatabasePlatform() instanceof SqlitePlatform || \PHP_VERSION_ID >= 81000) {
+            $this->assertSame(bin2hex(pack('e', 8.202343767574732)), bin2hex(pack('e', $m->load(2)->get('float'))));
+        }
     }
 
     public function testEmptyValues(): void