Update test function

the database access was done in a more complicated way than needed

navipy/processing/test.py

 import unittest
-import sqlite3
 import numpy as np
-import pandas as pd
 import navipy.database as database
 import navipy.processing.pcode as pcode
 from navipy.scene import is_numeric_array
+from navipy import unittestlogger
 import pkg_resources
 
 
 class TestCase(unittest.TestCase):
     def setUp(self):
+        unittestlogger()
         self.mydb_filename = pkg_resources.resource_filename(
             'navipy', 'resources/database.db')
         self.mydb = database.DataBaseLoad(self.mydb_filename)
@@ -28,25 +28,8 @@ class TestCase(unittest.TestCase):
         posorient is of wrong type (dictionary instead of pd.series)
         empty posorient pd.series
         """
-        conn = sqlite3.connect(self.mydb_filename)
-        c = conn.cursor()
-        c.execute(""" SELECT * FROM position_orientation WHERE (rowid=1) """)
-        rows = c.fetchall()[0]
-        # working case
-        convention = 'rxyz'
-        tuples = [('location', 'x'), ('location', 'y'),
-                  ('location', 'z'), (convention, 'alpha_0'),
-                  (convention, 'alpha_1'), (convention, 'alpha_2')]
-        index = pd.MultiIndex.from_tuples(tuples,
-                                          names=['position',
-                                                 'orientation'])
-        posorient = pd.Series(index=index)
-        posorient['location']['x'] = rows[5]
-        posorient['location']['y'] = rows[6]
-        posorient['location']['z'] = rows[1]
-        posorient[convention]['alpha_0'] = rows[3]
-        posorient[convention]['alpha_1'] = rows[2]
-        posorient[convention]['alpha_2'] = rows[4]
+        posorients = self.mydb.posorients
+        posorient = posorients.loc[13, :]
         image = self.mydb.scene(posorient=posorient)
         self.assertIsNotNone(image)
         self.assertFalse(sum(image.shape) == 0)
@@ -55,64 +38,30 @@ class TestCase(unittest.TestCase):
         self.assertTrue(image.shape[3] == 1)
 
         # incorrect case missing column
-        tuples2 = [('location', 'y'),
-                   ('location', 'z'), (convention, 'alpha_0'),
-                   (convention, 'alpha_1'), (convention, 'alpha_2')]
-        index2 = pd.MultiIndex.from_tuples(tuples2,
-                                           names=['position',
-                                                  'orientation'])
-        posorient2 = pd.Series(index=index2)
-        posorient2['location']['y'] = rows[6]
-        posorient2['location']['z'] = rows[1]
-        posorient2[convention]['alpha_0'] = rows[3]
-        posorient2[convention]['alpha_1'] = rows[2]
-        posorient2[convention]['alpha_2'] = rows[4]
+        posorient2 = posorients.loc[13, :]
+        posorient2.drop(('location', 'x'), inplace=True)
         with self.assertRaises(Exception):
             image = self.mydb.scene(posorient=posorient2)
 
         # incorrect case None
-        posorient2 = pd.Series(index=index)
+        posorient2 = posorients.loc[13, :]
         posorient2['location']['x'] = None
-        posorient2['location']['y'] = rows[6]
-        posorient2['location']['z'] = rows[1]
-        posorient2[convention]['alpha_0'] = rows[3]
-        posorient2[convention]['alpha_1'] = rows[2]
-        posorient2[convention]['alpha_2'] = rows[4]
         with self.assertRaises(ValueError):
             image = self.mydb.scene(posorient=posorient2)
 
         # incorrect case nan
-        posorient2 = pd.Series(index=index)
+        posorient2 = posorients.loc[13, :]
         posorient2['location']['x'] = np.nan
-        posorient2['location']['y'] = rows[6]
-        posorient2['location']['z'] = rows[1]
-        posorient2[convention]['alpha_0'] = rows[3]
-        posorient2[convention]['alpha_1'] = rows[2]
-        posorient2[convention]['alpha_2'] = rows[4]
         with self.assertRaises(ValueError):
             image = self.mydb.scene(posorient=posorient2)
 
         # incorrect case no pandas series but dict
         posorient2 = {}
-        posorient2['location'] = {}
-        posorient2[convention] = {}
-        posorient2['location']['x'] = rows[5]
-        posorient2['location']['y'] = rows[6]
-        posorient2['location']['z'] = rows[1]
-        posorient2[convention]['alpha_0'] = rows[3]
-        posorient2[convention]['alpha_1'] = rows[2]
-        posorient2[convention]['alpha_2'] = rows[4]
         with self.assertRaises(TypeError):
             image = self.mydb.scene(posorient=posorient2)
 
         # not working case empty
-        tuples = [('location', 'x'), ('location', 'y'),
-                  ('location', 'z'), (convention, 'alpha_0'),
-                  (convention, 'alpha_1'), (convention, 'alpha_2')]
-        index = pd.MultiIndex.from_tuples(tuples,
-                                          names=['position',
-                                                 'orientation'])
-        posorient2 = pd.Series(index=index)
+        posorient2 = posorients.loc[13, :]*np.nan
         with self.assertRaises(Exception):
             image = self.mydb.scene(posorient=posorient2)
 
@@ -180,7 +129,7 @@ class TestCase(unittest.TestCase):
                 self.mydb.scene(rowid=rowid)
         with self.assertRaises(TypeError):
             self.mydb.scene(rowid='T')
-        with self.assertRaises(TypeError):
+        with self.assertRaises(Exception):
             self.mydb.scene(rowid=None)
         with self.assertRaises(TypeError):
             self.mydb.scene(rowid=np.nan)