import Test.HUnit
import Test.QuickCheck
+import Cardinal
import Comparisons
import Point
import FunctionValues
-- HUnit Tests
--- Since p0, p1, p2 are in clockwise order, we expect the volume here
--- to be negative.
+
+-- | Check the volume of a particular tetrahedron against the value
+-- computed by hand. Its vertices are in clockwise order, so the
+-- volume should be negative.
test_volume1 :: Test
test_volume1 =
TestCase $ assertEqual "volume is correct" True (vol ~= (-1/3))
vol = volume t
--- Now, p0, p1, and p2 are in counter-clockwise order. The volume
--- should therefore be positive.
+-- | Check the volume of a particular tetrahedron against the value
+-- computed by hand. Its vertices are in counter-clockwise order, so
+-- the volume should be positive.
test_volume2 :: Test
test_volume2 =
TestCase $ assertEqual "volume is correct" True (vol ~= (1/3))
fv = empty_values }
vol = volume t
+
+-- | Ensure that a tetrahedron contains a particular point chosen to
+-- be inside of it.
test_contains_point1 :: Test
test_contains_point1 =
TestCase $ assertEqual "contains an inner point" True (contains_point t inner_point)
fv = empty_values }
+-- | Ensure that a tetrahedron does not contain a particular point chosen to
+-- be outside of it (first test).
test_doesnt_contain_point1 :: Test
test_doesnt_contain_point1 =
TestCase $ assertEqual "doesn't contain an exterior point" False (contains_point t exterior_point)
fv = empty_values }
+-- | Ensure that a tetrahedron does not contain a particular point chosen to
+-- be outside of it (second test).
test_doesnt_contain_point2 :: Test
test_doesnt_contain_point2 =
TestCase $ assertEqual "doesn't contain an exterior point" False (contains_point t exterior_point)
v3 = p3,
fv = empty_values }
+
+-- | Ensure that a tetrahedron does not contain a particular point chosen to
+-- be outside of it (third test).
test_doesnt_contain_point3 :: Test
test_doesnt_contain_point3 =
TestCase $ assertEqual "doesn't contain an exterior point" False (contains_point t exterior_point)
v3 = p3,
fv = empty_values }
+
+-- | Ensure that a tetrahedron does not contain a particular point chosen to
+-- be outside of it (fourth test).
test_doesnt_contain_point4 :: Test
test_doesnt_contain_point4 =
TestCase $ assertEqual "doesn't contain an exterior point" False (contains_point t exterior_point)
v3 = p3,
fv = empty_values }
+
+-- | Ensure that a tetrahedron does not contain a particular point chosen to
+-- be outside of it (fifth test).
test_doesnt_contain_point5 :: Test
test_doesnt_contain_point5 =
TestCase $ assertEqual "doesn't contain an exterior point" False (contains_point t exterior_point)
v3 = p3,
fv = empty_values }
+-- | A list of all HUnit tests defined in this module.
tetrahedron_tests :: [Test]
tetrahedron_tests = [test_volume1,
test_volume2,
test_doesnt_contain_point4,
test_doesnt_contain_point5 ]
+
+-- | The barycentric coordinate of v0 with respect to itself should
+-- be one.
prop_b0_v0_always_unity :: Tetrahedron -> Property
prop_b0_v0_always_unity t =
(volume t) > 0 ==> (b0 t) (v0 t) ~= 1.0
+-- | The barycentric coordinate of v1 with respect to v0 should
+-- be zero.
prop_b0_v1_always_zero :: Tetrahedron -> Property
prop_b0_v1_always_zero t =
(volume t) > 0 ==> (b0 t) (v1 t) ~= 0
+-- | The barycentric coordinate of v2 with respect to v0 should
+-- be zero.
prop_b0_v2_always_zero :: Tetrahedron -> Property
prop_b0_v2_always_zero t =
(volume t) > 0 ==> (b0 t) (v2 t) ~= 0
+-- | The barycentric coordinate of v3 with respect to v0 should
+-- be zero.
prop_b0_v3_always_zero :: Tetrahedron -> Property
prop_b0_v3_always_zero t =
(volume t) > 0 ==> (b0 t) (v3 t) ~= 0
+-- | The barycentric coordinate of v1 with respect to itself should
+-- be one.
prop_b1_v1_always_unity :: Tetrahedron -> Property
prop_b1_v1_always_unity t =
(volume t) > 0 ==> (b1 t) (v1 t) ~= 1.0
+-- | The barycentric coordinate of v0 with respect to v1 should
+-- be zero.
prop_b1_v0_always_zero :: Tetrahedron -> Property
prop_b1_v0_always_zero t =
(volume t) > 0 ==> (b1 t) (v0 t) ~= 0
+-- | The barycentric coordinate of v2 with respect to v1 should
+-- be zero.
prop_b1_v2_always_zero :: Tetrahedron -> Property
prop_b1_v2_always_zero t =
(volume t) > 0 ==> (b1 t) (v2 t) ~= 0
+-- | The barycentric coordinate of v3 with respect to v1 should
+-- be zero.
prop_b1_v3_always_zero :: Tetrahedron -> Property
prop_b1_v3_always_zero t =
(volume t) > 0 ==> (b1 t) (v3 t) ~= 0
+-- | The barycentric coordinate of v2 with respect to itself should
+-- be one.
prop_b2_v2_always_unity :: Tetrahedron -> Property
prop_b2_v2_always_unity t =
(volume t) > 0 ==> (b2 t) (v2 t) ~= 1.0
+-- | The barycentric coordinate of v0 with respect to v2 should
+-- be zero.
prop_b2_v0_always_zero :: Tetrahedron -> Property
prop_b2_v0_always_zero t =
(volume t) > 0 ==> (b2 t) (v0 t) ~= 0
+-- | The barycentric coordinate of v1 with respect to v2 should
+-- be zero.
prop_b2_v1_always_zero :: Tetrahedron -> Property
prop_b2_v1_always_zero t =
(volume t) > 0 ==> (b2 t) (v1 t) ~= 0
+-- | The barycentric coordinate of v3 with respect to v2 should
+-- be zero.
prop_b2_v3_always_zero :: Tetrahedron -> Property
prop_b2_v3_always_zero t =
(volume t) > 0 ==> (b2 t) (v3 t) ~= 0
+-- | The barycentric coordinate of v3 with respect to itself should
+-- be one.
prop_b3_v3_always_unity :: Tetrahedron -> Property
prop_b3_v3_always_unity t =
(volume t) > 0 ==> (b3 t) (v3 t) ~= 1.0
+-- | The barycentric coordinate of v0 with respect to v3 should
+-- be zero.
prop_b3_v0_always_zero :: Tetrahedron -> Property
prop_b3_v0_always_zero t =
(volume t) > 0 ==> (b3 t) (v0 t) ~= 0
+-- | The barycentric coordinate of v1 with respect to v3 should
+-- be zero.
prop_b3_v1_always_zero :: Tetrahedron -> Property
prop_b3_v1_always_zero t =
(volume t) > 0 ==> (b3 t) (v1 t) ~= 0
+-- | The barycentric coordinate of v2 with respect to v3 should
+-- be zero.
prop_b3_v2_always_zero :: Tetrahedron -> Property
prop_b3_v2_always_zero t =
(volume t) > 0 ==> (b3 t) (v2 t) ~= 0
--- Used for convenience in the next few tests.
+-- | Used for convenience in the next few tests; not a test itself.
p :: Tetrahedron -> Int -> Int -> Int -> Int -> Double
p t i j k l = (polynomial t) (xi t i j k l)
term2 = (9/2)*(p t 1 1 1 0)
term3 = (3/4)*((p t 2 1 0 0) + (p t 1 2 0 0) + (p t 2 0 1 0))
term4 = (3/4)*((p t 1 0 2 0) + (p t 0 2 1 0) + (p t 0 1 2 0))
+
+prop_x_rotation_doesnt_affect_front :: Tetrahedron -> Bool
+prop_x_rotation_doesnt_affect_front t =
+ expr1 == expr2
+ where
+ fv0 = Tetrahedron.fv t
+ fv1 = rotate (Tetrahedron.fv t) cwx
+ expr1 = front $ fv0
+ expr2 = front $ fv1
+
+prop_x_rotation_doesnt_affect_back :: Tetrahedron -> Bool
+prop_x_rotation_doesnt_affect_back t =
+ expr1 == expr2
+ where
+ fv0 = Tetrahedron.fv t
+ fv1 = rotate (Tetrahedron.fv t) cwx
+ expr1 = back $ fv0
+ expr2 = back $ fv1
+
+
+prop_y_rotation_doesnt_affect_left :: Tetrahedron -> Bool
+prop_y_rotation_doesnt_affect_left t =
+ expr1 == expr2
+ where
+ fv0 = Tetrahedron.fv t
+ fv1 = rotate (Tetrahedron.fv t) cwy
+ expr1 = left $ fv0
+ expr2 = left $ fv1
+
+prop_y_rotation_doesnt_affect_right :: Tetrahedron -> Bool
+prop_y_rotation_doesnt_affect_right t =
+ expr1 == expr2
+ where
+ fv0 = Tetrahedron.fv t
+ fv1 = rotate (Tetrahedron.fv t) cwy
+ expr1 = right $ fv0
+ expr2 = right $ fv1
+
+
+prop_z_rotation_doesnt_affect_down :: Tetrahedron -> Bool
+prop_z_rotation_doesnt_affect_down t =
+ expr1 == expr2
+ where
+ fv0 = Tetrahedron.fv t
+ fv1 = rotate (Tetrahedron.fv t) cwz
+ expr1 = down $ fv0
+ expr2 = down $ fv1
+
+
+prop_z_rotation_doesnt_affect_top :: Tetrahedron -> Bool
+prop_z_rotation_doesnt_affect_top t =
+ expr1 == expr2
+ where
+ fv0 = Tetrahedron.fv t
+ fv1 = rotate (Tetrahedron.fv t) cwz
+ expr1 = top $ fv0
+ expr2 = top $ fv1
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