PSR-0 for namespace and filename + tests

FluentInterface/SQL.php

@@ -1,6 +1,6 @@
 <?php
 
-namespace DesignPatterns;
+namespace DesignPatterns\FluentInterface;
 
 /**
  * fluent interface pattern
@@ -52,9 +52,15 @@ class SQL
         $this->_where[] = $condition;
         return $this;
     }
+    
+    /**
+     * Gets the query, just an example of building a query, 
+     * no check on consistency
+     */
+    public function getQuery()
+    {
+        return 'SELECT ' . implode(',', $this->_fields) 
+                . ' FROM ' . implode(',', $this->_from)
+                . ' WHERE ' . implode(' AND ', $this->_where);
+    }
 }
-
-$instance = new SQL();
-$instance->select(array('foo', 'bar'))
-         ->from('foobar', 'f')
-         ->where('f.bar = ?');

Tests/FluentInterface/FluentInterfaceTest.php

@@ -0,0 +1,28 @@
+<?php
+
+/*
+ * DesignPatternPHP
+ */
+
+namespace DesignPatterns\Tests\FluentInterface;
+
+use DesignPatterns\FluentInterface\SQL;
+
+/**
+ * FluentInterfaceTest tests the fluent interface SQL
+ */
+class FluentInterfaceTest extends \PHPUnit_Framework_TestCase
+{
+
+    public function testBuildSQL()
+    {
+        $instance = new SQL();
+        $query = $instance->select(array('foo', 'bar'))
+                ->from('foobar', 'f')
+                ->where('f.bar = ?')
+                ->getQuery();
+
+        $this->assertEquals('SELECT foo,bar FROM foobar AS f WHERE f.bar = ?', $query);
+    }
+
+}