'''
Created on 05/11/2015

@author: MMPE
'''
from __future__ import unicode_literals
from __future__ import print_function
from __future__ import division
from __future__ import absolute_import
from io import open
from future import standard_library
from wetb.hawc2.shear_file import ShearFile
standard_library.install_aliases()
import unittest
from wetb.hawc2 import shear_file
import numpy as np
import os
import shutil
tfp = os.path.join(os.path.dirname(__file__), 'test_files/')
class TestShearFile(unittest.TestCase):


    def test_shearfile_save(self):
        f = tfp + "tmp_shearfile1.dat"
        shear_file.save(f, [-55, 55], [30, 100, 160] , u=np.array([[0.7, 1, 1.3], [0.7, 1, 1.3]]).T)
        with open(f) as fid:
            self.assertEqual(fid.read(),
""" # autogenerated shear file
  2 3
 # shear v component
  0.0000000000 0.0000000000
  0.0000000000 0.0000000000
  0.0000000000 0.0000000000
 # shear u component
  0.7000000000 0.7000000000
  1.0000000000 1.0000000000
  1.3000000000 1.3000000000
 # shear w component
  0.0000000000 0.0000000000
  0.0000000000 0.0000000000
  0.0000000000 0.0000000000
 # v coordinates
  -55.0000000000
  55.0000000000
 # w coordinates
  30.0000000000
  100.0000000000
  160.0000000000
""")
        os.remove(f)


    def test_shearfile2(self):
        f = tfp + "tmp_shearfile2.dat"
        shear_file.save(f, [-55, 55], [30, 100, 160] , u=np.array([0.7, 1, 1.3]).T)
        with open(f) as fid:
            self.assertEqual(fid.read(),
""" # autogenerated shear file
  2 3
 # shear v component
  0.0000000000 0.0000000000
  0.0000000000 0.0000000000
  0.0000000000 0.0000000000
 # shear u component
  0.7000000000 0.7000000000
  1.0000000000 1.0000000000
  1.3000000000 1.3000000000
 # shear w component
  0.0000000000 0.0000000000
  0.0000000000 0.0000000000
  0.0000000000 0.0000000000
 # v coordinates
  -55.0000000000
  55.0000000000
 # w coordinates
  30.0000000000
  100.0000000000
  160.0000000000
""")
        os.remove(f)

    def test_shear_makedirs(self):
        f = tfp + "shear/tmp_shearfile2.dat"
        shear_file.save(f, [-55, 55], [30, 100, 160] , u=np.array([0.7, 1, 1.3]).T)
        shutil.rmtree(tfp + "shear")
        
    def test_shear_load(self):
        shear_file = ShearFile.load(tfp+"data/user_shear.dat")
        np.testing.assert_array_equal(shear_file.w_positions, [30,100,160])
        self.assertEqual(shear_file.uvw(0,65)[0],.85)
        self.assertEqual(shear_file.uvw(-55,65)[0],.9)
        np.testing.assert_array_equal(shear_file.uvw([0,-55],[65,65])[0],[.85,.9])
        
        shear_file = ShearFile.load_from_htc(tfp+"htcfiles/test.htc")
        np.testing.assert_array_equal(shear_file.w_positions, [30,100,160])
        np.testing.assert_array_almost_equal(shear_file.uvw([0,-55],[65,65])[0],np.array([.85,.9])*10+8.860807038)
if __name__ == "__main__":
    #import sys;sys.argv = ['', 'Test.test_shearfile']
    unittest.main()