diff --git a/ChangeLog b/ChangeLog
index 3529f5df..cdfc7394 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,8 @@
 30/12/14 started 7.42.2
 - allow c++ set enum from string
 - display param default and range in usage
+- better docs
+- more tests
 
 24/12/14 started 7.42.1
 - add gobject-2.0 to Requires: in vips and vips-cpp .pc files
diff --git a/test/test_create.py b/test/test_create.py
index c2ae3846..392756d9 100755
--- a/test/test_create.py
+++ b/test/test_create.py
@@ -29,7 +29,7 @@ def zip_expand(x, y):
 class TestCreate(unittest.TestCase):
     # test a pair of things which can be lists for approx. equality
     def assertAlmostEqualObjects(self, a, b, places = 4, msg = ''):
-        #print 'assertAlmostEqualObjects %s = %s' % (a, b)
+        # print 'assertAlmostEqualObjects %s = %s' % (a, b)
         for x, y in zip_expand(a, b):
             self.assertAlmostEqual(x, y, places = places, msg = msg)
 
@@ -70,5 +70,78 @@ class TestCreate(unittest.TestCase):
         p = lut.getpoint(10, 0)
         self.assertEqual(p[0], 100 * 10.0 / 255.0)
 
+        M = Vips.Image.new_from_array([[0, 0, 100], 
+                                       [255, 100, 0],
+                                       [128, 10, 90]])
+        lut = M.buildlut()
+        self.assertEqual(lut.width, 256)
+        self.assertEqual(lut.height, 1)
+        self.assertEqual(lut.bands, 2)
+        p = lut.getpoint(0, 0)
+        self.assertAlmostEqualObjects(p, [0.0, 100.0])
+        p = lut.getpoint(64, 0)
+        self.assertAlmostEqualObjects(p, [5.0, 95.0])
+
+    def test_eye(self):
+        im = Vips.Image.eye(100, 90)
+        self.assertEqual(im.width, 100)
+        self.assertEqual(im.height, 90)
+        self.assertEqual(im.bands, 1)
+        self.assertEqual(im.format, Vips.BandFormat.FLOAT)
+        self.assertEqual(im.max(), 1.0)
+        self.assertEqual(im.min(), -1.0)
+
+        im = Vips.Image.eye(100, 90, uchar = True)
+        self.assertEqual(im.width, 100)
+        self.assertEqual(im.height, 90)
+        self.assertEqual(im.bands, 1)
+        self.assertEqual(im.format, Vips.BandFormat.UCHAR)
+        self.assertEqual(im.max(), 255.0)
+        self.assertEqual(im.min(), 0.0)
+
+    def test_fractsurf(self):
+        im = Vips.Image.fractsurf(100, 90, 2.5)
+        self.assertEqual(im.width, 100)
+        self.assertEqual(im.height, 90)
+        self.assertEqual(im.bands, 1)
+        self.assertEqual(im.format, Vips.BandFormat.FLOAT)
+
+    def test_gaussmat(self):
+        im = Vips.Image.gaussmat(1, 0.1)
+        self.assertEqual(im.width, 7)
+        self.assertEqual(im.height, 7)
+        self.assertEqual(im.bands, 1)
+        self.assertEqual(im.format, Vips.BandFormat.DOUBLE)
+        self.assertEqual(im.max(), 20)
+        total = im.avg() * im.width * im.height
+        scale = im.get("scale")
+        self.assertEqual(total, scale)
+        p = im.getpoint(im.width / 2, im.height / 2)
+        self.assertEqual(p[0], 20.0)
+
+        im = Vips.Image.gaussmat(1, 0.1, 
+                                 separable = True, precision = "float")
+        self.assertEqual(im.width, 7)
+        self.assertEqual(im.height, 1)
+        self.assertEqual(im.bands, 1)
+        self.assertEqual(im.format, Vips.BandFormat.DOUBLE)
+        self.assertEqual(im.max(), 1.0)
+        total = im.avg() * im.width * im.height
+        scale = im.get("scale")
+        self.assertEqual(total, scale)
+        p = im.getpoint(im.width / 2, im.height / 2)
+        self.assertEqual(p[0], 1.0)
+
+    def test_gaussnoise(self):
+        im = Vips.Image.gaussnoise(100, 90)
+        self.assertEqual(im.width, 100)
+        self.assertEqual(im.height, 90)
+        self.assertEqual(im.bands, 1)
+        self.assertEqual(im.format, Vips.BandFormat.FLOAT)
+
+
+
+
+
 if __name__ == '__main__':
     unittest.main()