Added testing for mets_part_differentials

geodepy/tests/test_survey.py

@@ -1,8 +1,8 @@
 import unittest
 from geodepy.convert import DMSAngle
-from geodepy.survey import (first_vel_params, first_vel_corrn,
-                            precise_inst_ht, va_conv, radiations, joins)
-
+from geodepy.survey import (first_vel_params, first_vel_corrn, 
+                            mets_partial_differentials, precise_inst_ht, 
+                            va_conv, radiations, joins)
 
 class TestSurveyConvert(unittest.TestCase):
     def test_first_vel_params(self):
@@ -25,6 +25,22 @@ def test_first_vel_corrn(self):
                                      obs_pressure, obs_relative_humidity)
         corrected_obs_distance = raw_obs_distance + correction
         self.assertEqual(round(corrected_obs_distance, 4), 1117.8624)
+
+    def test_mets_partial_differentials(self):
+        group_ref_Index = 1.00028
+        temp = 15
+        pressure = 1013.25
+        rel_humidity = 60
+        K = round(0.91973804217265260,2)
+        L = round(0.2619533756724471,2)
+        M = round(0.03911157383307305,2)
+        differ_new = mets_partial_differentials(group_ref_Index, 
+                                                temp, 
+                                                pressure,
+                                                rel_humidity)
+        self.assertEqual(round(differ_new[0], 2), K)
+        self.assertEqual(round(differ_new[1], 2), L)
+        self.assertEqual(round(differ_new[2], 2), M)
 
     def test_va_conv(self):
         test1 = va_conv(92.24305555555556, 2116.254)