X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/f6e894a53af83a69f553555cb4a6248d57a58391..6e908fb81c5a1d66e80d71c7b4676cacb1d8e801:/test/python/test_db_connection.py

diff --git a/test/python/test_db_connection.py b/test/python/test_db_connection.py
index dcbfb8bf..5de68618 100644
--- a/test/python/test_db_connection.py
+++ b/test/python/test_db_connection.py
@@ -2,6 +2,7 @@
 Tests for specialised conenction and cursor classes.
 """
 import pytest
+import psycopg2
 
 from nominatim.db.connection import connect, get_pg_env
 
@@ -11,10 +12,10 @@ def db(temp_db):
         yield conn
 
 
-def test_connection_table_exists(db, temp_db_cursor):
+def test_connection_table_exists(db, table_factory):
     assert db.table_exists('foobar') == False
 
-    temp_db_cursor.execute('CREATE TABLE foobar (id INT)')
+    table_factory('foobar')
 
     assert db.table_exists('foobar') == True
 
@@ -30,6 +31,22 @@ def test_connection_index_exists(db, temp_db_cursor):
     assert db.index_exists('some_index', table='bar') == False
 
 
+def test_drop_table_existing(db, table_factory):
+    table_factory('dummy')
+    assert db.table_exists('dummy')
+
+    db.drop_table('dummy')
+    assert not db.table_exists('dummy')
+
+
+def test_drop_table_non_existsing(db):
+    db.drop_table('dfkjgjriogjigjgjrdghehtre')
+
+
+def test_drop_table_non_existing_force(db):
+    with pytest.raises(psycopg2.ProgrammingError, match='.*does not exist.*'):
+        db.drop_table('dfkjgjriogjigjgjrdghehtre', if_exists=False)
+
 def test_connection_server_version_tuple(db):
     ver = db.server_version_tuple()
 
@@ -48,8 +65,8 @@ def test_connection_postgis_version_tuple(db, temp_db_cursor):
     assert ver[0] >= 2
 
 
-def test_cursor_scalar(db, temp_db_cursor):
-    temp_db_cursor.execute('CREATE TABLE dummy (id INT)')
+def test_cursor_scalar(db, table_factory):
+    table_factory('dummy')
 
     with db.cursor() as cur:
         assert cur.scalar('SELECT count(*) FROM dummy') == 0
@@ -61,6 +78,14 @@ def test_cursor_scalar_many_rows(db):
             cur.scalar('SELECT * FROM pg_tables')
 
 
+def test_cursor_scalar_no_rows(db, table_factory):
+    table_factory('dummy')
+
+    with db.cursor() as cur:
+        with pytest.raises(RuntimeError):
+            cur.scalar('SELECT id FROM dummy')
+
+
 def test_get_pg_env_add_variable(monkeypatch):
     monkeypatch.delenv('PGPASSWORD', raising=False)
     env = get_pg_env('user=fooF')