X-Git-Url: https://gitweb.michael.orlitzky.com/?a=blobdiff_plain;f=src%2FFunctionValues.hs;fp=src%2FFunctionValues.hs;h=e9da25ffc235171c89bd6b878162d681554d5e0a;hb=9849853e69c46b46996e8c775d15661b2aba27a8;hp=00bb0a828d3072f3d4d4b2cdc51c8c4e2ccd2549;hpb=c3d4eba6aa5ada928b351e9ec7c12c3077808ba7;p=spline3.git

diff --git a/src/FunctionValues.hs b/src/FunctionValues.hs
index 00bb0a8..e9da25f 100644
--- a/src/FunctionValues.hs
+++ b/src/FunctionValues.hs
@@ -7,6 +7,7 @@ module FunctionValues (
   make_values,
   rotate,
   function_values_tests,
+  function_values_properties,
   value_at
   )
 where
@@ -15,10 +16,11 @@ import Prelude hiding (LT)
 import Test.HUnit
 import Test.Framework (Test, testGroup)
 import Test.Framework.Providers.HUnit (testCase)
+import Test.Framework.Providers.QuickCheck2 (testProperty)
 import Test.QuickCheck (Arbitrary(..), choose)
 
 import Assertions (assertTrue)
-import Cardinal ( Cardinal(..) )
+import Cardinal ( Cardinal(..), cwx, cwy, cwz )
 import Examples (trilinear)
 import Values (Values3D, dims, idx)
 
@@ -314,3 +316,68 @@ function_values_tests :: Test.Framework.Test
 function_values_tests =
     testGroup "FunctionValues Tests"
                   [ testCase "test directions" test_directions ]
+
+
+prop_x_rotation_doesnt_affect_front :: FunctionValues -> Bool
+prop_x_rotation_doesnt_affect_front fv0 =
+    expr1 == expr2
+    where
+      fv1 = rotate cwx fv0
+      expr1 = front fv0
+      expr2 = front fv1
+
+prop_x_rotation_doesnt_affect_back :: FunctionValues -> Bool
+prop_x_rotation_doesnt_affect_back fv0 =
+    expr1 == expr2
+    where
+      fv1 = rotate cwx fv0
+      expr1 = back fv0
+      expr2 = back fv1
+
+
+prop_y_rotation_doesnt_affect_left :: FunctionValues -> Bool
+prop_y_rotation_doesnt_affect_left fv0 =
+    expr1 == expr2
+    where
+      fv1 = rotate cwy fv0
+      expr1 = left fv0
+      expr2 = left fv1
+
+prop_y_rotation_doesnt_affect_right :: FunctionValues -> Bool
+prop_y_rotation_doesnt_affect_right fv0 =
+    expr1 == expr2
+    where
+      fv1 = rotate cwy fv0
+      expr1 = right fv0
+      expr2 = right fv1
+
+
+prop_z_rotation_doesnt_affect_down :: FunctionValues -> Bool
+prop_z_rotation_doesnt_affect_down fv0 =
+    expr1 == expr2
+    where
+      fv1 = rotate cwz fv0
+      expr1 = down fv0
+      expr2 = down fv1
+
+
+prop_z_rotation_doesnt_affect_top :: FunctionValues -> Bool
+prop_z_rotation_doesnt_affect_top fv0 =
+    expr1 == expr2
+    where
+      fv1 = rotate cwz fv0
+      expr1 = top fv0
+      expr2 = top fv1
+
+
+function_values_properties :: Test.Framework.Test
+function_values_properties =
+  let tp = testProperty
+  in
+    testGroup "FunctionValues Properties" [
+      tp "x rotation doesn't affect front" prop_x_rotation_doesnt_affect_front,
+      tp "x rotation doesn't affect back" prop_x_rotation_doesnt_affect_back,
+      tp "y rotation doesn't affect left" prop_y_rotation_doesnt_affect_left,
+      tp "y rotation doesn't affect right" prop_y_rotation_doesnt_affect_right,
+      tp "z rotation doesn't affect top" prop_z_rotation_doesnt_affect_top,
+      tp "z rotation doesn't affect down" prop_z_rotation_doesnt_affect_down ]