Update tests

Author: riverside

tests/ConfigurationTest.php

@@ -1,7 +1,8 @@
 <?php
-namespace PhpOrm;
+namespace PhpOrm\Tests;
 
 use PHPUnit\Framework\TestCase;
+use PhpOrm\Configuration;
 
 class ConfigurationTest extends TestCase
 {

tests/ConnectionTest.php

@@ -1,7 +1,9 @@
 <?php
-namespace PhpOrm;
+namespace PhpOrm\Tests;
 
 use PHPUnit\Framework\TestCase;
+use PhpOrm\Connection;
+use PhpOrm\Configuration;
 
 class ConnectionTest extends TestCase
 {

tests/DBTest.php

@@ -1,7 +1,8 @@
 <?php
-namespace PhpOrm;
+namespace PhpOrm\Tests;
 
 use PHPUnit\Framework\TestCase;
+use PhpOrm\DB;
 
 class DBTest extends TestCase
 {

tests/ExpressionTest.php

@@ -1,10 +1,21 @@
 <?php
-namespace PhpOrm;
+namespace PhpOrm\Tests;
 
 use PHPUnit\Framework\TestCase;
+use PhpOrm\Expression;
 
 class ExpressionTest extends TestCase
 {
+    public function testAttributes()
+    {
+        $attributes = array(
+            'value',
+        );
+        foreach ($attributes as $attribute) {
+            $this->assertClassHasAttribute($attribute, Expression::class);
+        }
+    }
+
     public function testString()
     {
         $stub = $this->createMock(Expression::class);