Added test for GimpPaletteFile

MANIFEST.in

@@ -29,6 +29,7 @@ recursive-include Tests *.eps
 recursive-include Tests *.fli
 recursive-include Tests *.ggr
 recursive-include Tests *.gif
+recursive-include Tests *.gpl
 recursive-include Tests *.gnuplot
 recursive-include Tests *.html
 recursive-include Tests *.icc

Tests/images/test.gpl

@@ -0,0 +1,4 @@
+GIMP Palette
+Name: Test
+Columns: 0
+#

Tests/test_file_gimppalette.py

@@ -0,0 +1,19 @@
+from helper import unittest, PillowTestCase
+
+from PIL.GimpPaletteFile import GimpPaletteFile
+
+
+class TestImage(PillowTestCase):
+
+    def test_sanity(self):
+        with open('Tests/images/test.gpl', 'rb') as fp:
+            GimpPaletteFile(fp)
+
+        with open('Tests/images/hopper.jpg', 'rb') as fp:
+            self.assertRaises(SyntaxError, lambda: GimpPaletteFile(fp))
+
+
+if __name__ == '__main__':
+    unittest.main()
+
+# End of file