Rename coordinates.py into geometry.py

[linpy.git] / pypol / tests / test_geometry.py

diff --git a/pypol/tests/test_geometry.py b/pypol/tests/test_geometry.py
new file mode 100644 (file)
index 0000000..e602616
--- /dev/null
+++ b/pypol/tests/test_geometry.py
@@ -0,0 +1,91 @@
+import math
+import unittest
+
+from ..geometry import *
+from ..linexprs import Symbol
+from ..polyhedra import Eq
+
+
+class TestPoint(unittest.TestCase):
+
+    def setUp(self):
+        self.x = Symbol('x')
+        self.y = Symbol('y')
+        self.z = Symbol('z')
+        self.pt1 = Point({self.x: 10, self.y: 5, self.z: 1})
+        self.pt2 = Point({self.x: 15, self.y: 40, self.z: 60})
+        self.vec1 = Vector({self.x: 20, self.y: 30, self.z: 40})
+
+    def test_add(self):
+        self.assertEqual(self.pt1 + self.vec1, Point({self.x: 30, self.y: 35, self.z: 41}))
+        with self.assertRaises(TypeError):
+            self.pt1 + self.pt2
+
+    def test_eq(self):
+        self.assertEqual(self.pt1, self.pt1)
+        self.assertNotEqual(self.pt1, self.pt2)
+        self.assertNotEqual(self.pt1, self.vec1)
+
+    def test_sub(self):
+        self.assertEqual(self.pt1 - self.pt2, Vector({self.x: -5, self.y: -35, self.z: -59}))
+        self.assertEqual(self.pt1 - self.vec1, Point({self.x: -10, self.y: -25, self.z: -39}))
+
+    def test_aspolyhedron(self):
+        self.assertEqual(self.pt1.aspolyhedron(), Eq(self.x, 10) & Eq(self.y, 5) & Eq(self.z, 1))
+
+
+class TestVector(unittest.TestCase):
+
+    def setUp(self):
+        self.x = Symbol('x')
+        self.y = Symbol('y')
+        self.z = Symbol('z')
+        self.pt1 = Point({self.x: 10, self.y: 5, self.z: 1})
+        self.pt2 = Point({self.x: 15, self.y: 40, self.z: 60})
+        self.vec1 = Vector({self.x: 20, self.y: 30, self.z: 40})
+        self.vec2 = Vector({self.x: 45, self.y: 70, self.z: 80})
+
+    def test_add(self):
+        self.assertEqual(self.vec1 + self.pt1, Point({self.x: 30, self.y: 35, self.z: 41}))
+        self.assertEqual(self.vec1 + self.vec2, Vector({self.x: 65, self.y: 100, self.z: 120}))
+
+    def test_angle(self):
+        self.assertEqual(math.degrees(self.vec1.angle(self.vec1)), 0)
+        self.assertAlmostEqual(math.degrees(self.vec1.angle(self.vec2)), 4.15129, places=5)
+        self.assertAlmostEqual(math.degrees(self.vec2.angle(self.vec1)), 4.15129, places=5)
+
+    def test_cross(self):
+        self.assertEqual(self.vec1.cross(self.vec2), Vector({self.x: -400, self.y: 200, self.z: 50}))
+
+    def test_div(self):
+        self.assertEqual(self.vec1 / 10, Vector({self.x: 2, self.y: 3, self.z: 4}))
+
+    def test_dot(self):
+        self.assertEqual(self.vec1.dot(self.vec2), 6200)
+
+    def test_eq(self):
+        self.assertEqual(self.vec1, self.vec1)
+        self.assertNotEqual(self.vec1, self.vec2)
+
+    def test_mul(self):
+        self.assertEqual(75 * self.vec1, Vector({self.x: 1500, self.y: 2250, self.z: 3000}))
+        self.assertEqual(self.vec1 * 75, Vector({self.x: 1500, self.y: 2250, self.z: 3000}))
+
+    def test_neg(self):
+        self.assertEqual(-self.vec1, Vector({self.x: -20, self.y: -30, self.z: -40}))
+
+    def test_norm(self):
+        self.assertAlmostEqual(self.vec1.norm(), 53.85165, places=5)
+
+    def test_norm2(self):
+        self.assertEqual(self.vec1.norm2(), 2900)
+
+    def test_asunit(self):
+        unit = self.vec1.asunit()
+        self.assertAlmostEqual(unit[self.x], 0.37139, 5)
+        self.assertAlmostEqual(unit[self.y], 0.55709, 5)
+        self.assertAlmostEqual(unit[self.z], 0.74278, 5)
+
+    def test_sub(self):
+        self.assertEqual(self.vec1 - self.pt1, Point({self.x: 10, self.y: 25, self.z: 39}))
+        self.assertEqual(self.vec1 - self.vec2, Vector({self.x: -25, self.y: -40, self.z: -40}))