Fix tests on Windows

Author: Erlend E. Aasland

Lib/sqlite3/test/dbapi.py

@@ -25,6 +25,7 @@
 import sqlite3 as sqlite
 import sys
 
+from test.support import gc_collect
 from test.support.os_helper import TESTFN, unlink
 
 
@@ -180,6 +181,8 @@ def __fspath__(self):
         path = Path()
         with sqlite.connect(path) as cx:
             cx.execute('create table test(id integer)')
+        cx.close()
+        gc_collect()
 
     def test_open_uri(self):
         self.addCleanup(unlink, TESTFN)
@@ -190,6 +193,8 @@ def test_open_uri(self):
         with sqlite.connect('file:' + TESTFN + '?mode=ro', uri=True) as cx:
             with self.assertRaises(sqlite.OperationalError):
                 cx.execute('insert into test(id) values(1)')
+        cx.close()
+        gc_collect()
 
 
 class StatementCacheTests(unittest.TestCase):

Lib/sqlite3/test/hooks.py

@@ -23,6 +23,7 @@
 import unittest
 import sqlite3 as sqlite
 
+from test.support import gc_collect
 from test.support.os_helper import TESTFN, unlink
 
 
@@ -260,6 +261,9 @@ def trace(statement):
         con2.execute("create table bar(x)")
         cur.execute(queries[1])
         self.assertEqual(traced_statements, queries)
+        con1.close()
+        con2.close()
+        gc_collect()
 
 
 def suite():