Source Code for Module test_suite.unit_tests._lib._geometry.test_vectors

  1  ############################################################################### 
  2  #                                                                             # 
  3  # Copyright (C) 2014 Edward d'Auvergne                                        # 
  4  #                                                                             # 
  5  # This file is part of the program relax (http://www.nmr-relax.com).          # 
  6  #                                                                             # 
  7  # This program is free software: you can redistribute it and/or modify        # 
  8  # it under the terms of the GNU General Public License as published by        # 
  9  # the Free Software Foundation, either version 3 of the License, or           # 
 10  # (at your option) any later version.                                         # 
 11  #                                                                             # 
 12  # This program is distributed in the hope that it will be useful,             # 
 13  # but WITHOUT ANY WARRANTY; without even the implied warranty of              # 
 14  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               # 
 15  # GNU General Public License for more details.                                # 
 16  #                                                                             # 
 17  # You should have received a copy of the GNU General Public License           # 
 18  # along with this program.  If not, see <http://www.gnu.org/licenses/>.       # 
 19  #                                                                             # 
 20  ############################################################################### 
 21   
 22  # Python module imports. 
 23  from math import pi 
 24  from numpy import array, float64 
 25  from unittest import TestCase 
 26   
 27  # relax module imports. 
 28  from lib.geometry.vectors import vector_angle 
 29   
 30   
 31 -class Test_vectors(TestCase): 
 32      """Unit tests for the lib.geometry.vectors relax module.""" 
 33   
 34 -    def test_vector_angle1(self): 
 35          """Test the vector_angle() function with the vectors [1, 0, 0] and [0, 1, 0].""" 
 36   
 37          # Calculate the angle. 
 38          v1 = array([1, 0, 0], float64) 
 39          v2 = array([0, 1, 0], float64) 
 40          normal = array([0, 0, 1], float64) 
 41          angle = vector_angle(v1, v2, normal) 
 42   
 43          # Check the angle. 
 44          self.assertAlmostEqual(angle, pi/2.0) 
 45   
 46   
 47 -    def test_vector_angle2(self): 
 48          """Test the vector_angle() function with the vectors [1, 0, 0] and [0, 2, 0].""" 
 49   
 50          # Calculate the angle. 
 51          v1 = array([1, 0, 0], float64) 
 52          v2 = array([0, 2, 0], float64) 
 53          normal = array([0, 0, 1], float64) 
 54          angle = vector_angle(v1, v2, normal) 
 55   
 56          # Check the angle. 
 57          self.assertAlmostEqual(angle, pi/2.0) 
 58   
 59   
 60 -    def test_vector_angle3(self): 
 61          """Test the vector_angle() function with the vectors [2, 0, 0] and [0, -2, 0].""" 
 62   
 63          # Calculate the angle. 
 64          v1 = array([2, 0, 0], float64) 
 65          v2 = array([0, -2, 0], float64) 
 66          normal = array([0, 0, 1], float64) 
 67          angle = vector_angle(v1, v2, normal) 
 68   
 69          # Check the angle. 
 70          self.assertAlmostEqual(angle, -pi/2.0) 
 71   
 72   
 73 -    def test_vector_angle4(self): 
 74          """Test the vector_angle() function with the vectors [2, 0, 0] and [2, 2, 0].""" 
 75   
 76          # Calculate the angle. 
 77          v1 = array([2, 0, 0], float64) 
 78          v2 = array([2, 2, 0], float64) 
 79          normal = array([0, 0, 2], float64) 
 80          angle = vector_angle(v1, v2, normal) 
 81   
 82          # Check the angle. 
 83          self.assertAlmostEqual(angle, pi/4.0) 
 84   
 85   
 86 -    def test_vector_angle5(self): 
 87          """Test the vector_angle() function with the vectors [2, 0, 0] and [2, 2, 0].""" 
 88   
 89          # Calculate the angle. 
 90          v1 = array([2, 0, 0], float64) 
 91          v2 = array([2, 2, 0], float64) 
 92          normal = array([0, 0, -2], float64) 
 93          angle = vector_angle(v1, v2, normal) 
 94   
 95          # Check the angle. 
 96          self.assertAlmostEqual(angle, -pi/4.0) 
 97   
 98   
 99 -    def test_vector_angle6(self): 
100          """Test the vector_angle() function with the vectors [2, 2, 0] and [2, -2, 0].""" 
101   
102          # Calculate the angle. 
103          v1 = array([2, 2, 0], float64) 
104          v2 = array([2, -2, 0], float64) 
105          normal = array([0, 0, 2], float64) 
106          angle = vector_angle(v1, v2, normal) 
107   
108          # Check the angle. 
109          self.assertAlmostEqual(angle, -pi/2.0) 
110