Update tests for sampling seed changes

tests/data_analysis_test.py

 import os
 import shutil
 import unittest
+from unittest.mock import patch
 
 import bilby
 from bilby_pipe.data_analysis import DataAnalysisInput, create_analysis_parser
@@ -61,7 +62,9 @@ class TestDataAnalysisInput(unittest.TestCase):
         self.assertEqual(self.inputs.sampler, "dynesty")
 
     def test_set_sampling_kwargs_ini(self):
-        self.assertEqual(self.inputs.sampler_kwargs, dict(a=1, b=2))
+        self.assertEqual(
+            self.inputs.sampler_kwargs, dict(a=1, b=2, sampling_seed=150914)
+        )
 
     def test_set_sampling_kwargs_direct(self):
         self.inputs.sampler_kwargs = "{'a':5, 'b':5}"
@@ -70,8 +73,11 @@ class TestDataAnalysisInput(unittest.TestCase):
     def test_unset_sampling_kwargs(self):
         args, unknown_args = parse_args(self.default_args_list, self.parser)
         args.sampler_kwargs = None
-        inputs = DataAnalysisInput(args, unknown_args, test=True)
-        self.assertEqual(inputs.sampler_kwargs, dict())
+        args.sampling_seed = None
+        # This tests the case where the sampling seed is not set
+        with patch("numpy.random.randint", return_value=170817):
+            inputs = DataAnalysisInput(args, unknown_args, test=True)
+        self.assertEqual(inputs.sampler_kwargs, dict(sampling_seed=170817))
 
     def test_set_sampler_kwargs_fail(self):
         with self.assertRaises(BilbyPipeError):

tests/test_data_analysis.ini

@@ -17,3 +17,4 @@ label = label
 sampler = nestle
 sampler-kwargs = {'a': 1, 'b': 2}
 data-label = "DATA"
+sampling-seed = 150914