forked from hans/Nominatim
af7226393a
Instead of parsing the DSN for each external libpq program we are going to execute, provide a function that feeds them all necessary parameters through the environment. osm2pgsql is the first user.
72 lines
1.8 KiB
Python
72 lines
1.8 KiB
Python
"""
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Tests for specialised conenction and cursor classes.
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"""
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import pytest
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from nominatim.db.connection import connect, get_pg_env
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@pytest.fixture
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def db(temp_db):
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with connect('dbname=' + temp_db) as conn:
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yield conn
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def test_connection_table_exists(db, temp_db_cursor):
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assert db.table_exists('foobar') == False
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temp_db_cursor.execute('CREATE TABLE foobar (id INT)')
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assert db.table_exists('foobar') == True
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def test_connection_index_exists(db, temp_db_cursor):
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assert db.index_exists('some_index') == False
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temp_db_cursor.execute('CREATE TABLE foobar (id INT)')
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temp_db_cursor.execute('CREATE INDEX some_index ON foobar(id)')
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assert db.index_exists('some_index') == True
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assert db.index_exists('some_index', table='foobar') == True
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assert db.index_exists('some_index', table='bar') == False
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def test_connection_server_version_tuple(db):
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ver = db.server_version_tuple()
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assert isinstance(ver, tuple)
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assert len(ver) == 2
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assert ver[0] > 8
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def test_cursor_scalar(db, temp_db_cursor):
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temp_db_cursor.execute('CREATE TABLE dummy (id INT)')
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with db.cursor() as cur:
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assert cur.scalar('SELECT count(*) FROM dummy') == 0
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def test_cursor_scalar_many_rows(db):
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with db.cursor() as cur:
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with pytest.raises(RuntimeError):
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cur.scalar('SELECT * FROM pg_tables')
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def test_get_pg_env_add_variable(monkeypatch):
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monkeypatch.delenv('PGPASSWORD', raising=False)
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env = get_pg_env('user=fooF')
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assert env['PGUSER'] == 'fooF'
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assert 'PGPASSWORD' not in env
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def test_get_pg_env_overwrite_variable(monkeypatch):
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monkeypatch.setenv('PGUSER', 'some default')
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env = get_pg_env('user=overwriter')
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assert env['PGUSER'] == 'overwriter'
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def test_get_pg_env_ignore_unknown():
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env = get_pg_env('tty=stuff', base_env={})
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assert env == {}
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