add console logger tests (#3)

tests/TestCase.php

@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests;
+
+use Psr\Log\LoggerInterface;
+use Psr\Log\LogLevel;
+use ZM\Logger\ConsoleLogger;
+
+class TestCase extends \PHPUnit\Framework\TestCase
+{
+    protected $logs = [];
+
+    protected function getLogger(): LoggerInterface
+    {
+        $logger = new ConsoleLogger(LogLevel::DEBUG);
+        $logger::$format = '%body%';
+        $logger->addLogCallback(function ($level, $output, $message, $context) {
+            $this->logs[] = $output;
+            return false;
+        });
+        return $logger;
+    }
+
+    protected function getLogs(): array
+    {
+        return $this->logs;
+    }
+}