diff --git a/test/jsonTest.php b/test/jsonTest.php
new file mode 100644
index 0000000..c5f31a5
--- /dev/null
+++ b/test/jsonTest.php
@@ -0,0 +1,63 @@
+<?php
+/**
+ * COPS (Calibre OPDS PHP Server) test file
+ *
+ * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
+ * @author     Sébastien Lucas <sebastien@slucas.fr>
+ */
+
+require_once (dirname(__FILE__) . "/config_test.php");
+require_once (dirname(__FILE__) . "/../JSON_renderer.php");
+
+class JsonTest extends PHPUnit_Framework_TestCase
+{
+    public function testCompleteArray () {
+        global $config;
+
+        $_SERVER["HTTP_USER_AGENT"] = "Firefox";
+        $test = array ();
+        $test = JSONRenderer::addCompleteArray ($test);
+        $this->assertArrayHasKey ("c", $test);
+        $this->assertArrayHasKey ("version", $test ["c"]);
+        $this->assertArrayHasKey ("i18n", $test ["c"]);
+        $this->assertArrayHasKey ("url", $test ["c"]);
+        $this->assertArrayHasKey ("config", $test ["c"]);
+
+        $this->assertFalse ($test ["c"]["url"]["thumbnailUrl"] == $test ["c"]["url"]["coverUrl"]);
+
+        // The thumbnails should be the same as the covers
+        $config['cops_thumbnail_handling'] = "1";
+        $test = array ();
+        $test = JSONRenderer::addCompleteArray ($test);
+
+        $this->assertTrue ($test ["c"]["url"]["thumbnailUrl"] == $test ["c"]["url"]["coverUrl"]);
+
+        // The thumbnails should be the same as the covers
+        $config['cops_thumbnail_handling'] = "/images.png";
+        $test = array ();
+        $test = JSONRenderer::addCompleteArray ($test);
+
+        $this->assertEquals ("/images.png", $test ["c"]["url"]["thumbnailUrl"]);
+    }
+
+    public function testGetBookContentArrayWithoutSeries () {
+        $book = Book::getBookById(17);
+        $test = JSONRenderer::getBookContentArray($book);
+
+        $this->assertEquals ("", $test ["seriesName"]);
+        $this->assertEquals ("1.0", $test ["seriesIndex"]);
+        $this->assertEquals ("", $test ["seriesCompleteName"]);
+        $this->assertEquals ("", $test ["seriesurl"]);
+    }
+
+    public function testGetBookContentArrayWithSeries () {
+        $book = Book::getBookById(2);
+
+        $test = JSONRenderer::getBookContentArray($book);
+
+        $this->assertEquals ("Sherlock Holmes", $test ["seriesName"]);
+        $this->assertEquals ("6.0", $test ["seriesIndex"]);
+        $this->assertEquals ("Book 6.0 in the Sherlock Holmes series", $test ["seriesCompleteName"]);
+        $this->assertStringEndsWith ("?page=7&id=1", $test ["seriesurl"]);
+    }
+}
\ No newline at end of file