Merge pull request #2284 from lonvia/cleanup-word-frequency-computation

[nominatim.git] / test / python / test_db_connection.py

diff --git a/test/python/test_db_connection.py b/test/python/test_db_connection.py
index ef1ae7416cc9d23a3d3c11433d5ea444c3c9262b..5de686182fc2d3d90c67c68a165ed634f6e40920 100644 (file)
--- a/test/python/test_db_connection.py
+++ b/test/python/test_db_connection.py
@@ -2,31 +2,106 @@
 Tests for specialised conenction and cursor classes.
 """
 import pytest
+import psycopg2
 
-from nominatim.db.connection import connect
+from nominatim.db.connection import connect, get_pg_env
 
 @pytest.fixture
 def db(temp_db):
-    conn = connect('dbname=' + temp_db)
-    yield conn
-    conn.close()
+    with connect('dbname=' + temp_db) as conn:
+        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
 
 
-def test_cursor_scalar(db, temp_db_cursor):
-    temp_db_cursor.execute('CREATE TABLE dummy (id INT)')
+def test_connection_index_exists(db, temp_db_cursor):
+    assert db.index_exists('some_index') == False
+
+    temp_db_cursor.execute('CREATE TABLE foobar (id INT)')
+    temp_db_cursor.execute('CREATE INDEX some_index ON foobar(id)')
+
+    assert db.index_exists('some_index') == True
+    assert db.index_exists('some_index', table='foobar') == True
+    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()
+
+    assert isinstance(ver, tuple)
+    assert len(ver) == 2
+    assert ver[0] > 8
+
+
+def test_connection_postgis_version_tuple(db, temp_db_cursor):
+    temp_db_cursor.execute('CREATE EXTENSION postgis')
+
+    ver = db.postgis_version_tuple()
+
+    assert isinstance(ver, tuple)
+    assert len(ver) == 2
+    assert ver[0] >= 2
+
+
+def test_cursor_scalar(db, table_factory):
+    table_factory('dummy')
 
     with db.cursor() as cur:
         assert cur.scalar('SELECT count(*) FROM dummy') == 0
 
+
 def test_cursor_scalar_many_rows(db):
     with db.cursor() as cur:
         with pytest.raises(RuntimeError):
             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')
+
+    assert env['PGUSER'] == 'fooF'
+    assert 'PGPASSWORD' not in env
+
+
+def test_get_pg_env_overwrite_variable(monkeypatch):
+    monkeypatch.setenv('PGUSER', 'some default')
+    env = get_pg_env('user=overwriter')
+
+    assert env['PGUSER'] == 'overwriter'
+
+
+def test_get_pg_env_ignore_unknown():
+    env = get_pg_env('tty=stuff', base_env={})
+
+    assert env == {}