import Test.QuickCheck
+import Comparisons
import Cube
-import Grid (Grid)
-import Tests.Grid ()
+import FunctionValues (FunctionValues(FunctionValues))
+import Tests.FunctionValues
+import Tetrahedron (v0, volume)
instance Arbitrary Cube where
arbitrary = do
- g' <- arbitrary :: Gen Grid
+ (Positive h') <- arbitrary :: Gen (Positive Double)
i' <- choose (coordmin, coordmax)
j' <- choose (coordmin, coordmax)
k' <- choose (coordmin, coordmax)
- d' <- arbitrary :: Gen Double
- return (Cube g' i' j' k' d')
+ fv' <- arbitrary :: Gen FunctionValues
+ return (Cube h' i' j' k' fv')
where
coordmin = -268435456 -- -(2^29 / 2)
coordmax = 268435456 -- +(2^29 / 2)
+
+
+-- Quickcheck tests.
+
+-- | Since the grid size is necessarily positive, all tetrahedrons
+-- (which comprise cubes of positive volume) must have positive volume
+-- as well.
+prop_all_volumes_positive :: Cube -> Bool
+prop_all_volumes_positive c =
+ null nonpositive_volumes
+ where
+ ts = tetrahedrons c
+ volumes = map volume ts
+ nonpositive_volumes = filter (<= 0) volumes
+
+-- | In fact, since all of the tetrahedra are identical, we should
+-- already know their volumes. There's 24 tetrahedra to a cube, so
+-- we'd expect the volume of each one to be (1/24)*h^3.
+prop_tetrahedron0_volumes_exact :: Cube -> Bool
+prop_tetrahedron0_volumes_exact c =
+ volume (tetrahedron0 c) ~= (1/24)*(delta^(3::Int))
+ where
+ delta = h c
+
+-- | In fact, since all of the tetrahedra are identical, we should
+-- already know their volumes. There's 24 tetrahedra to a cube, so
+-- we'd expect the volume of each one to be (1/24)*h^3.
+prop_tetrahedron1_volumes_exact :: Cube -> Bool
+prop_tetrahedron1_volumes_exact c =
+ volume (tetrahedron1 c) ~= (1/24)*(delta^(3::Int))
+ where
+ delta = h c
+
+-- | In fact, since all of the tetrahedra are identical, we should
+-- already know their volumes. There's 24 tetrahedra to a cube, so
+-- we'd expect the volume of each one to be (1/24)*h^3.
+prop_tetrahedron2_volumes_exact :: Cube -> Bool
+prop_tetrahedron2_volumes_exact c =
+ volume (tetrahedron2 c) ~= (1/24)*(delta^(3::Int))
+ where
+ delta = h c
+
+-- | In fact, since all of the tetrahedra are identical, we should
+-- already know their volumes. There's 24 tetrahedra to a cube, so
+-- we'd expect the volume of each one to be (1/24)*h^3.
+prop_tetrahedron3_volumes_exact :: Cube -> Bool
+prop_tetrahedron3_volumes_exact c =
+ volume (tetrahedron3 c) ~= (1/24)*(delta^(3::Int))
+ where
+ delta = h c
+
+-- | In fact, since all of the tetrahedra are identical, we should
+-- already know their volumes. There's 24 tetrahedra to a cube, so
+-- we'd expect the volume of each one to be (1/24)*h^3.
+prop_tetrahedron4_volumes_exact :: Cube -> Bool
+prop_tetrahedron4_volumes_exact c =
+ volume (tetrahedron4 c) ~= (1/24)*(delta^(3::Int))
+ where
+ delta = h c
+
+-- | In fact, since all of the tetrahedra are identical, we should
+-- already know their volumes. There's 24 tetrahedra to a cube, so
+-- we'd expect the volume of each one to be (1/24)*h^3.
+prop_tetrahedron5_volumes_exact :: Cube -> Bool
+prop_tetrahedron5_volumes_exact c =
+ volume (tetrahedron5 c) ~= (1/24)*(delta^(3::Int))
+ where
+ delta = h c
+
+-- | In fact, since all of the tetrahedra are identical, we should
+-- already know their volumes. There's 24 tetrahedra to a cube, so
+-- we'd expect the volume of each one to be (1/24)*h^3.
+prop_tetrahedron6_volumes_exact :: Cube -> Bool
+prop_tetrahedron6_volumes_exact c =
+ volume (tetrahedron6 c) ~= (1/24)*(delta^(3::Int))
+ where
+ delta = h c
+
+-- | In fact, since all of the tetrahedra are identical, we should
+-- already know their volumes. There's 24 tetrahedra to a cube, so
+-- we'd expect the volume of each one to be (1/24)*h^3.
+prop_tetrahedron7_volumes_exact :: Cube -> Bool
+prop_tetrahedron7_volumes_exact c =
+ volume (tetrahedron7 c) ~= (1/24)*(delta^(3::Int))
+ where
+ delta = h c
+
+-- | All tetrahedron should have their v0 located at the center of the cube.
+prop_v0_all_equal :: Cube -> Bool
+prop_v0_all_equal c = (v0 t0) == (v0 t1)
+ where
+ t0 = head (tetrahedrons c) -- Doesn't matter which two we choose.
+ t1 = head $ tail (tetrahedrons c)
+
+
+-- | This pretty much repeats the prop_all_volumes_positive property,
+-- but will let me know which tetrahedrons's vertices are disoriented.
+prop_tetrahedron0_volumes_positive :: Cube -> Bool
+prop_tetrahedron0_volumes_positive c =
+ volume (tetrahedron0 c) > 0
+
+-- | This pretty much repeats the prop_all_volumes_positive property,
+-- but will let me know which tetrahedrons's vertices are disoriented.
+prop_tetrahedron1_volumes_positive :: Cube -> Bool
+prop_tetrahedron1_volumes_positive c =
+ volume (tetrahedron1 c) > 0
+
+-- | This pretty much repeats the prop_all_volumes_positive property,
+-- but will let me know which tetrahedrons's vertices are disoriented.
+prop_tetrahedron2_volumes_positive :: Cube -> Bool
+prop_tetrahedron2_volumes_positive c =
+ volume (tetrahedron2 c) > 0
+
+-- | This pretty much repeats the prop_all_volumes_positive property,
+-- but will let me know which tetrahedrons's vertices are disoriented.
+prop_tetrahedron3_volumes_positive :: Cube -> Bool
+prop_tetrahedron3_volumes_positive c =
+ volume (tetrahedron3 c) > 0
+
+-- | This pretty much repeats the prop_all_volumes_positive property,
+-- but will let me know which tetrahedrons's vertices are disoriented.
+prop_tetrahedron4_volumes_positive :: Cube -> Bool
+prop_tetrahedron4_volumes_positive c =
+ volume (tetrahedron4 c) > 0
+
+-- | This pretty much repeats the prop_all_volumes_positive property,
+-- but will let me know which tetrahedrons's vertices are disoriented.
+prop_tetrahedron5_volumes_positive :: Cube -> Bool
+prop_tetrahedron5_volumes_positive c =
+ volume (tetrahedron5 c) > 0
+
+-- | This pretty much repeats the prop_all_volumes_positive property,
+-- but will let me know which tetrahedrons's vertices are disoriented.
+prop_tetrahedron6_volumes_positive :: Cube -> Bool
+prop_tetrahedron6_volumes_positive c =
+ volume (tetrahedron6 c) > 0
+
+-- | This pretty much repeats the prop_all_volumes_positive property,
+-- but will let me know which tetrahedrons's vertices are disoriented.
+prop_tetrahedron7_volumes_positive :: Cube -> Bool
+prop_tetrahedron7_volumes_positive c =
+ volume (tetrahedron7 c) > 0
projects / spline3.git / blobdiff