Fix various Psalm, PhpCS and PhpUnit failures.

Reset Psalm baseline
Signed-off-by: Joey Smith <jsmith@webinertia.net>

Signed-off-by: Joey Smith <jsmith@webinertia.net>

Author: tyrsson

psalm-baseline.xml

@@ -698,12 +698,6 @@
       <code><![CDATA[private array $fixtureLoaders = [];]]></code>
     </UndefinedDocblockClass>
   </file>
-  <file src="test/integration/FixtureLoader/FixtureLoader.php">
-    <MissingReturnType>
-      <code><![CDATA[createDatabase]]></code>
-      <code><![CDATA[dropDatabase]]></code>
-    </MissingReturnType>
-  </file>
   <file src="test/integration/FixtureLoader/MysqlFixtureLoader.php">
     <PossiblyFalseArgument>
       <code><![CDATA[file_get_contents($this->fixtureFile)]]></code>

test/integration/FixtureLoader/FixtureLoader.php

@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PhpDbIntegrationTest\Adapter\Mysql\FixtureLoader;
+
+interface FixtureLoaderInterface
+{
+    public function createDatabase(): void;
+
+    public function dropDatabase(): void;
+}

test/integration/FixtureLoader/FixtureLoaderInterface.php

@@ -12,7 +12,7 @@
 use function print_r;
 use function sprintf;
 
-final class MysqlFixtureLoader implements FixtureLoader
+final class MysqlFixtureLoader implements FixtureLoaderInterface
 {
     private string $fixtureFile = __DIR__ . '/../TestFixtures/mysql.sql';