#!/usr/bin/python

import unittest
import baker
import grid

import numpy as np
import scipy.spatial

class TestSequenceFunctions(unittest.TestCase):
  def setUp(self):
    self.l = [[-1, 1], [-1, 0], [-1, 1], [0, -1], [0, 0], [0, 1], [1, -1], [1, 0], [1, 1]]
    self.approx_fmt = "%0.6f"
    self.all_points = [
                        [ 0, 0], # 0
                        [ 1, 0], # 1
                        [ 1, 1], # 2
                        [ 0, 1], # 3
                        [ 1,-1], # 4
                        [ 0,-1], # 5
                        [-1, 1], # 6
                        [-1, 0], # 7
                        [-1,-1], # 8
                      ]
    self.q = [1, 0, 0, 0, 0, 0, 0, 0, 0]
    self.X = [1.5, 10.25]

  def testImports(self):
    import numpy
    import scipy
    import grid
    import baker
    import delaunay

  def testGetPhis(self):

    X = [0,0]
    r = [[-1, -1], [0, 2], [1, -1]]

    result = baker.get_phis(X, r)
    result = [self.approx_fmt % i for i in result]

    right_answer = [self.approx_fmt % i for i in [1/3.0, 1/3.0, 1/3.0]]

    for a,b in zip(result, right_answer):
      self.assertEqual(a,b)

  def testGetPhis2(self):

    X = [0.5,0.25]
    r = [[0, 0], [1, 0], [1, 1]]

    result = baker.get_phis(X, r)

    right_answer = [0.5, 0.25, 0.25]

    for a,b in zip(result, right_answer):
      self.assertEqual(a,b)

  def testQlinear(self):
    X = [0.5, 0.25]
    r = [[0, 0], [1, 0], [1, 1]]
    q = [1, 0, 0]

    result = baker.qlinear(X, r, q)

    right_answer = 0.5

    self.assertEqual(result, right_answer)

  def testRunBaker_1(self):
    size_of_simplex = 3
    extra_points    = 3

    R = grid.grid(self.all_points[:size_of_simplex],
                           self.q[:size_of_simplex])

    S = grid.grid(self.all_points[size_of_simplex:size_of_simplex + extra_points],
                           self.q[size_of_simplex:size_of_simplex + extra_points])

    answer = baker.run_baker(self.X, R, S)
    a = self.approx_fmt % answer['a']
    b = self.approx_fmt % answer['b']
    c = self.approx_fmt % answer['c']

    self.assertEqual(a, c)
    self.assertEqual(c, self.approx_fmt % 0.00)
    self.assertEqual(b, self.approx_fmt % (1/3.0))

  def testRunBaker_2(self):
    size_of_simplex = 3
    extra_points    = 4

    R = grid.grid(self.all_points[:size_of_simplex],
                           self.q[:size_of_simplex])

    S = grid.grid(self.all_points[size_of_simplex:size_of_simplex + extra_points],
                           self.q[size_of_simplex:size_of_simplex + extra_points])

    answer = baker.run_baker(self.X, R, S)

    a = self.approx_fmt % answer['a']
    b = self.approx_fmt % answer['b']
    c = self.approx_fmt % answer['c']

    self.assertEqual(a, c)
    self.assertEqual(c, self.approx_fmt % float(2/3.0))

  def testRunBaker_3(self):
    size_of_simplex = 3
    extra_points    = 5

    R = grid.grid(self.all_points[:size_of_simplex],
                           self.q[:size_of_simplex])

    S = grid.grid(self.all_points[size_of_simplex:size_of_simplex + extra_points],
                           self.q[size_of_simplex:size_of_simplex + extra_points])

    answer = baker.run_baker(self.X, R, S)
    a = self.approx_fmt % answer['a']
    b = self.approx_fmt % answer['b']
    c = self.approx_fmt % answer['c']

    self.assertEqual(a, self.approx_fmt % float(13/14.0))
    self.assertEqual(b, self.approx_fmt % float(2 / 7.0))
    self.assertEqual(c, self.approx_fmt % float(15/14.0))

  def testRunBaker_4(self):
    size_of_simplex = 3
    extra_points    = 6

    R = grid.grid(self.all_points[:size_of_simplex],
                           self.q[:size_of_simplex])

    S = grid.grid(self.all_points[size_of_simplex:size_of_simplex + extra_points],
                           self.q[size_of_simplex:size_of_simplex + extra_points])

    answer = baker.run_baker(self.X, R, S)
    a = self.approx_fmt % answer['a']
    b = self.approx_fmt % answer['b']
    c = self.approx_fmt % answer['c']

    self.assertEqual(a, self.approx_fmt % float(48/53.0))
    self.assertEqual(b, self.approx_fmt % float(15/53.0))
    self.assertEqual(c, self.approx_fmt % float(54/53.0))

if __name__ == '__main__':
  suite = unittest.TestLoader().loadTestsFromTestCase(TestSequenceFunctions)
  unittest.TextTestRunner(verbosity=2).run(suite)