add test

Add a test for manual update when a pre-release has already been downloaded

tests/unit/seed/wheels/test_periodic_update.py

@@ -170,9 +170,9 @@ def test_manual_update_honored(mocker, session_app_data, for_py_version):
     assert str(result.path) == expected_path
 
 
-def wheel_path(wheel, of):
+def wheel_path(wheel, of, pre_release=""):
     new_version = ".".join(str(i) for i in (tuple(sum(x) for x in zip_longest(wheel.version_tuple, of, fillvalue=0))))
-    new_name = wheel.name.replace(wheel.version, new_version)
+    new_name = wheel.name.replace(wheel.version, new_version + pre_release)
     return str(wheel.path.parent / new_name)
 
 
@@ -545,6 +545,39 @@ def test_download_manual_stop_after_one_download(tmp_path, mocker, freezer):
     assert write.call_count == 1
 
 
+def test_download_manual_ignores_pre_release(tmp_path, mocker, freezer):
+    freezer.move_to(_UP_NOW)
+    wheel = get_embed_wheel("pip", "3.9")
+    app_data_outer = AppDataDiskFolder(str(tmp_path / "app"))
+    pip_version_remote = [wheel_path(wheel, (0, 0, 1))]
+    pip_version_pre = NewVersion(Path(wheel_path(wheel, (0, 1, 0), "b1")).name, _UP_NOW, None, "downloaded")
+
+    download_wheel = mock_download(mocker, pip_version_remote)
+    url_o = mocker.patch("virtualenv.seed.wheels.periodic_update.urlopen", side_effect=URLError("unavailable"))
+
+    last_update = _UP_NOW - timedelta(days=14)
+    u_log = UpdateLog(started=last_update, completed=last_update, versions=[pip_version_pre], periodic=True)
+    read_dict = mocker.patch("virtualenv.app_data.via_disk_folder.JSONStoreDisk.read", return_value=u_log.to_dict())
+    write = mocker.patch("virtualenv.app_data.via_disk_folder.JSONStoreDisk.write")
+
+    do_update("pip", "3.9", str(wheel.path), str(app_data_outer), [], False)
+
+    assert download_wheel.call_count == 1
+    assert url_o.call_count == 2
+    assert read_dict.call_count == 1
+    assert write.call_count == 1
+    wrote_json = write.call_args[0][0]
+    assert wrote_json["versions"] == [
+        {
+            "filename": Path(pip_version_remote[0]).name,
+            "release_date": None,
+            "found_date": dump_datetime(_UP_NOW),
+            "source": "manual",
+        },
+        pip_version_pre.to_dict(),
+    ]
+
+
 def test_download_periodic_stop_at_first_usable(tmp_path, mocker, freezer):
     freezer.move_to(_UP_NOW)
     wheel = get_embed_wheel("pip", "3.9")