diff --git a/peeweedbevolve.py b/peeweedbevolve.py
index 531437d..38e45b2 100644
--- a/peeweedbevolve.py
+++ b/peeweedbevolve.py
@@ -670,6 +670,9 @@ def calc_changes(db, ignore_tables=None):
     deleted_cols_by_table[ntn] = deletes
 
   for ntn, model in table_names_to_models.items():
+    # if ignoring this table, skip index manipulation
+    if model._meta.table_name in ignore_tables:
+      continue
     etn = table_renamed_from.get(ntn, ntn)
     deletes = deleted_cols_by_table.get(ntn,set())
     existing_indexes_for_table = [i for i in existing_indexes.get(etn, []) if not any([(c in deletes) for c in i.columns])]
@@ -715,10 +718,13 @@ def calc_index_changes(db, migrator, existing_indexes, model, renamed_cols):
     to_run += create_index(model, [fields_by_column_name[col] for col in index[1]], index[2])
   return to_run
 
-def evolve(db, interactive=True, ignore_tables=None):
+def evolve(db, interactive=True, ignore_tables=None, always_confirm_no=False, testing=False):
   if interactive:
     print((colorama.Style.BRIGHT + colorama.Fore.RED + 'Making updates to database: {}'.format(db.database) + colorama.Style.RESET_ALL))
   to_run = calc_changes(db, ignore_tables=ignore_tables)
+  # in testing mode, return the sql to run so that it can be checked for correctness
+  if testing:
+    return to_run
   if not to_run:
     if interactive:
       print('Nothing to do... Your database is up to date!')
@@ -726,7 +732,7 @@ def evolve(db, interactive=True, ignore_tables=None):
 
   commit = True
   if interactive:
-    commit = _confirm(db, to_run)
+    commit = _confirm(db, to_run, always_confirm_no)
   _execute(db, to_run, interactive=interactive, commit=commit)
 
 
@@ -780,7 +786,7 @@ def print_sql(sql):
   print(sql)
 
 
-def _confirm(db, to_run):
+def _confirm(db, to_run, always_confirm_no):
   print()
   print("Your database needs the following %s:" % ('changes' if len(to_run)>1 else 'change'))
   print()
@@ -789,6 +795,9 @@ def _confirm(db, to_run):
     print_sql('  %s; %s' % (sql, params or ''))
   if is_postgres(db): print_sql('\n  COMMIT;')
   print()
+  if always_confirm_no:
+    print("Confirming 'no' to these changes as always_confirm_no is True")
+    sys.exit(1)
   while True:
     print('Do you want to run %s? (%s)' % (('these commands' if len(to_run)>1 else 'this command'), ('type yes, no or test' if is_postgres(db) else 'yes or no')), end=' ')
     response = raw_input().strip().lower()