From dad59715618926a405eff12c828b2c704053ff18 Mon Sep 17 00:00:00 2001
From: Luis G <luis.gg1990@gmail.com>
Date: Mon, 20 Jun 2016 12:36:26 -0300
Subject: [PATCH] Add unit tests

Add unit tests for registered_extensions
---
 Tests/test_image.py | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/Tests/test_image.py b/Tests/test_image.py
index f1457a85b..85d1f3f5c 100644
--- a/Tests/test_image.py
+++ b/Tests/test_image.py
@@ -196,6 +196,24 @@ class TestImage(PillowTestCase):
         img_colors = sorted(img.getcolors())
         self.assertEqual(img_colors, expected_colors)
 
+    def test_registered_extensions_uninitialized(self):
+        # Act
+        ext = Image.registered_extensions()
+
+        # Assert
+        self.assertEqual(bool(ext), True)
+
+    def test_registered_extensions(self):
+        # Arrange
+        # Open an image to trigger plugin registration
+        Image.open('Tests/images/rgb.jpg')
+
+        # Act
+        ext = Image.registered_extensions()
+
+        # Assert
+        self.assertEqual(bool(ext), True)
+
     def test_effect_mandelbrot(self):
         # Arrange
         size = (512, 512)