Added statement test

tests/StatementTest.php

@@ -0,0 +1,71 @@
+<?php
+
+namespace Flame\Test;
+
+use Flame\Connection;
+use Flame\Statement;
+
+class StatementTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @var Connection
+     */
+    private $connection;
+
+    /**
+     * @var Statement
+     */
+    private $insertQuery;
+
+    /**
+     * @var Statement
+     */
+    private $selectQuery;
+
+    protected function setUp()
+    {
+        $this->connection = new Connection('sqlite::memory:');
+        $this->connection->query('CREATE TABLE users (id INT PRIMARY KEY, username CHAR(50), age INT)');
+        $this->insertQuery = $this->connection->prepare('INSERT INTO users (username, age) VALUES(s:username, i:age)');
+        $this->selectQuery = $this->connection->prepare('SELECT * FROM users');
+
+        $this->insertQuery->execute(['username' => 'nkt', 'age' => 20]);
+    }
+
+    public function testValueConverters()
+    {
+        $this->insertQuery->execute(['username' => null, 'age' => '20foobar']);
+        $insertedData = $this->connection->query('SELECT username, age FROM users ORDER BY id DESC')->fetch(\PDO::FETCH_ASSOC);
+
+        $this->assertEquals(['username' => null, 'age' => '20'], $insertedData);
+    }
+
+    public function testFetchCallback()
+    {
+        $i = 0;
+        $results = $this->selectQuery->execute()->fetchCallback(function ($data) use (&$i) {
+            $i++;
+
+            return $data['id'];
+        });
+        $this->assertCount($i, $results);
+    }
+
+    public function testCloseCursor()
+    {
+        iterator_to_array($this->selectQuery->execute());
+        $this->assertEquals($this->selectQuery, $this->selectQuery->closeCursor());
+    }
+
+    public function testInvoke()
+    {
+        $stmt = $this->selectQuery;
+
+        $this->assertSame($this->selectQuery, $stmt());
+    }
+
+    public function testToString()
+    {
+        $this->assertEquals($this->insertQuery->queryString, (string)$this->insertQuery);
+    }
+}