Add storage.pool_exists

core/storage/__init__.py

@@ -291,6 +291,15 @@ def _get_pool_klass(name, config=None):
     return klass
 
 
+def pool_exists(name):
+    """ Check if the specified pool exists """
+    try:
+        _get_pool_klass(name)
+        return True
+    except StoragePoolException:
+        return False
+
+
 class StoragePoolException(QubesException):
     pass
 

tests/storage.py

@@ -52,6 +52,15 @@ class TC_00_Storage(SystemTestsMixin, QubesTestCase):
         result = qubes.storage._get_pool_klass('default')
         self.assertTrue(result is XenPool)
 
+    def test_004_pool_exists_default(self):
+        """ Expect the default pool to exists """
+        self.assertTrue(qubes.storage.pool_exists('default'))
+
+    def test_005_pool_exists_random(self):
+        """ Expect this pool to not a exist """
+        self.assertFalse(
+            qubes.storage.pool_exists('asdh312096r832598213iudhas'))
+
 
 class TC_01_Storage(SystemTestsMixin, QubesTestCase):