[feature] Medoo test case

Author: Angelaon

.gitignore

@@ -216,4 +216,10 @@ pip-log.txt
 .mr.developer.cfg
 
 #php-cs-fixer
-/.php_cs
+/.php_cs
+
+#PHPUnit
+/.phpunit.cache
+
+/composer.lock
+/vendor

composer.json

@@ -16,6 +16,9 @@
 		"php": ">=5.4",
 		"ext-pdo": "*"
 	},
+	"require-dev": {
+        "phpunit/phpunit": "^9.0"
+    },
 	"suggest": {
 		"ext-pdo_mysql": "For MySQL or MariaDB database",
 		"ext-pdo_sqlsrv": "For MSSQL database on both Window/Liunx platform",
@@ -27,7 +30,15 @@
 	},
 	"autoload": {
 		"psr-4": {
-			"Medoo\\": "/src"
+			"Medoo\\": "src/"
 		}
+	},
+	"autoload-dev": {
+        "psr-4": {
+            "Medoo\\Tests\\": "tests/"
+        }
+	},
+	"scripts": {
+		"test": "phpunit"
 	}
 }

phpunit.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.5/phpunit.xsd"
+         bootstrap="vendor/autoload.php"
+         cacheResultFile=".phpunit.cache/test-results"
+         executionOrder="depends,defects"
+         failOnRisky="true"
+         failOnWarning="true"
+         verbose="true">
+    <testsuites>
+        <testsuite name="Medoo Test Suite">
+            <directory suffix="Test.php">./tests</directory>
+        </testsuite>
+    </testsuites>
+
+    <coverage cacheDirectory=".phpunit.cache/code-coverage"
+              processUncoveredFiles="true">
+        <include>
+            <directory suffix=".php">src</directory>
+        </include>
+    </coverage>
+</phpunit>

tests/MedooTestCase.php

@@ -0,0 +1,62 @@
+<?php
+
+namespace Medoo\Tests;
+
+use Medoo\Medoo;
+use PHPUnit\Framework\TestCase;
+
+class MedooTestCase extends TestCase
+{
+    protected Medoo $database;
+
+    public function setUp() : void
+    {
+        $this->database = new Medoo([
+            'testMode' => true
+        ]);
+    }
+
+    public function typesProvider(): array
+    {
+        return [
+            'MySQL' => ['mysql'],
+            'MSSQL' => ['mssql'],
+            'SQLite' => ['sqlite'],
+            'PostgreSQL' => ['pgsql'],
+            'Oracle' => ['oracle']
+        ];
+    }
+
+    public function setType($type) : void
+    {
+        $this->database->type = $type;
+    }
+
+    public function expectedQuery($expected) : string
+    {
+        $identifier = [
+            'mysql' => '`$1`',
+            'mssql' => '[$1]'
+        ];
+
+        return preg_replace(
+            '/"((?![_\d])[\p{N}\p{L}_]+)"/u',
+            $identifier[$this->database->type] ?? '"$1"',
+            $expected
+        );
+    }
+
+    public function assertQuery($expected, $query) : void
+    {
+        if (is_array($expected)) {
+            
+            $this->assertEquals(
+                $this->expectedQuery($expected[$this->database->type] ?? $expected['default']),
+                $query
+            );
+        }
+        else {
+            $this->assertEquals($this->expectedQuery($expected), $query);
+        }
+    }
+}