Add simple PsrLogger test (#143)

tests/Logger/PsrLoggerTest.php

@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SimPod\ClickHouseClient\Tests\Logger;
+
+use PHPUnit\Framework\TestCase;
+use Psr\Log\LoggerInterface;
+use SimPod\ClickHouseClient\Logger\PsrLogger;
+
+/** @covers \SimPod\ClickHouseClient\Logger\PsrLogger */
+final class PsrLoggerTest extends TestCase
+{
+    public function testStartQuery() : void
+    {
+        $logger = $this->createMock(LoggerInterface::class);
+        $logger->expects(self::once())
+            ->method('debug')
+            ->withConsecutive(['SELECT 1', []]);
+
+        $psrLogger = new PsrLogger($logger);
+        $psrLogger->startQuery('oioi', 'SELECT 1');
+        $psrLogger->stopQuery('oioi');
+    }
+}