X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/c06a1d007a4e67ab5caf5bf63d351f83e4e54ab6..0d80a9b89764e50c4c1a77c6d30febb4106b1825:/test/python/test_db_utils.py?ds=sidebyside

diff --git a/test/python/test_db_utils.py b/test/python/test_db_utils.py
index 4a603888..545cc58f 100644
--- a/test/python/test_db_utils.py
+++ b/test/python/test_db_utils.py
@@ -1,7 +1,6 @@
 """
 Tests for DB utility functions in db.utils
 """
-import psycopg2
 import pytest
 
 import nominatim.db.utils as db_utils
@@ -51,3 +50,68 @@ def test_execute_file_with_post_code(dsn, tmp_path, temp_db_cursor):
     db_utils.execute_file(dsn, tmpfile, post_code='INSERT INTO test VALUES(23)')
 
     assert temp_db_cursor.row_set('SELECT * FROM test') == {(23, )}
+
+
+class TestCopyBuffer:
+    TABLE_NAME = 'copytable'
+
+    @pytest.fixture(autouse=True)
+    def setup_test_table(self, table_factory):
+        table_factory(self.TABLE_NAME, 'colA INT, colB TEXT')
+
+
+    def table_rows(self, cursor):
+        return cursor.row_set('SELECT * FROM ' + self.TABLE_NAME)
+
+
+    def test_copybuffer_empty(self):
+        with db_utils.CopyBuffer() as buf:
+            buf.copy_out(None, "dummy")
+
+
+    def test_all_columns(self, temp_db_cursor):
+        with db_utils.CopyBuffer() as buf:
+            buf.add(3, 'hum')
+            buf.add(None, 'f\\t')
+
+            buf.copy_out(temp_db_cursor, self.TABLE_NAME)
+
+        assert self.table_rows(temp_db_cursor) == {(3, 'hum'), (None, 'f\\t')}
+
+
+    def test_selected_columns(self, temp_db_cursor):
+        with db_utils.CopyBuffer() as buf:
+            buf.add('foo')
+
+            buf.copy_out(temp_db_cursor, self.TABLE_NAME,
+                         columns=['colB'])
+
+        assert self.table_rows(temp_db_cursor) == {(None, 'foo')}
+
+
+    def test_reordered_columns(self, temp_db_cursor):
+        with db_utils.CopyBuffer() as buf:
+            buf.add('one', 1)
+            buf.add(' two ', 2)
+
+            buf.copy_out(temp_db_cursor, self.TABLE_NAME,
+                         columns=['colB', 'colA'])
+
+        assert self.table_rows(temp_db_cursor) == {(1, 'one'), (2, ' two ')}
+
+
+    def test_special_characters(self, temp_db_cursor):
+        with db_utils.CopyBuffer() as buf:
+            buf.add('foo\tbar')
+            buf.add('sun\nson')
+            buf.add('\\N')
+
+            buf.copy_out(temp_db_cursor, self.TABLE_NAME,
+                         columns=['colB'])
+
+        assert self.table_rows(temp_db_cursor) == {(None, 'foo\tbar'),
+                                                   (None, 'sun\nson'),
+                                                   (None, '\\N')}
+
+
+