new tests for CAVERN and SURVEXPORT

core/TESTS/test_imports.py

@@ -20,12 +20,15 @@ https://docs.djangoproject.com/en/3.0/topics/testing/tools/
 """
 import unittest
 import re
+import subprocess
+
 from django.test import TestCase, SimpleTestCase, Client
 
 class SimpleTest(SimpleTestCase):
     def test_test_setting(self):
         from django.conf import settings        
         self.assertEqual(settings.EMAIL_BACKEND, 'django.core.mail.backends.locmem.EmailBackend')
+        import troggle.settings as settings
     def test_import_TroggleModel(self):
         from troggle.core.models.troggle import TroggleModel
     def test_import_Cave(self):
@@ -105,5 +108,28 @@ class SimpleTest(SimpleTestCase):
         from troggle.core.views.statistics import pathsreport, stats, dataissues
         from troggle.core.views.survex import survexcaveslist, survexcavesingle, svx
 
+class SubprocessTest(TestCase):
+
+    @classmethod
+    def setUpTestData(cls):
+        pass
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_installs(self):
+        import troggle.settings as settings
+
+        for i in [settings.CAVERN, settings.SURVEXPORT]:
+            # Define command as string and then split() into list format
+            cmd = f'which {i}'.split()
+            try:
+                sp = subprocess.check_call(cmd, shell=False)
+            except subprocess.CalledProcessError:
+                self.assertTrue( False, f'no {i} installed')
+