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https://github.com/KnugiHK/WhatsApp-Chat-Exporter.git
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Added unit tests
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fschuh
327
tests/test_incremental_merge.py
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327
tests/test_incremental_merge.py
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import os
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import json
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import pytest
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from unittest.mock import patch, mock_open, call, MagicMock
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from Whatsapp_Chat_Exporter.utility import incremental_merge
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from Whatsapp_Chat_Exporter.data_model import ChatStore
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# Test data setup
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chat_data_1 = {
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"12345678@s.whatsapp.net": {
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"name": "Friend",
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"type": "ios",
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"my_avatar": "AppDomainGroup-group.net.whatsapp.WhatsApp.shared\\Media/Profile/Photo.jpg",
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"their_avatar": "AppDomainGroup-group.net.whatsapp.WhatsApp.shared/Media/Profile\\12345678-1709851420.thumb",
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"their_avatar_thumb": None,
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"status": None,
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"messages": {
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"24690": {
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"from_me": True,
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"timestamp": 1463926635.571629,
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"time": "10:17",
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"media": False,
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"key_id": "34B5EF10FBCA37B7E",
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"meta": False,
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"data": "I'm here",
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"safe": False,
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"sticker": False
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},
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"24691": { # This message only exists in target
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"from_me": False,
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"timestamp": 1463926641.571629,
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"time": "10:17",
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"media": False,
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"key_id": "34B5EF10FBCA37B8E",
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"meta": False,
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"data": "Great to see you",
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"safe": False,
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"sticker": False
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}
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}
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}
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}
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chat_data_2 = {
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"12345678@s.whatsapp.net": {
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"name": "Friend",
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"type": "ios",
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"my_avatar": "AppDomainGroup-group.net.whatsapp.WhatsApp.shared\\Media/Profile/Photo.jpg",
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"their_avatar": "AppDomainGroup-group.net.whatsapp.WhatsApp.shared/Media/Profile\\12345678-1709851420.thumb",
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"their_avatar_thumb": None,
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"status": None,
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"messages": {
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"24690": {
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"from_me": True,
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"timestamp": 1463926635.571629,
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"time": "10:17",
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"media": False,
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"key_id": "34B5EF10FBCA37B7E",
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"meta": False,
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"data": "I'm here",
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"safe": False,
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"sticker": False
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},
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"24692": { # This message only exists in source
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"from_me": False,
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"timestamp": 1463926642.571629,
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"time": "10:17",
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"media": False,
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"key_id": "34B5EF10FBCA37B9E",
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"meta": False,
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"data": "Hi there!",
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"safe": False,
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"sticker": False
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},
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}
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}
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}
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# Expected merged data - should contain all messages with all fields initialized as they would be by Message class
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chat_data_merged = {
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"12345678@s.whatsapp.net": {
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"name": "Friend",
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"type": "ios",
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"my_avatar": "AppDomainGroup-group.net.whatsapp.WhatsApp.shared\\Media/Profile/Photo.jpg",
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"their_avatar": "AppDomainGroup-group.net.whatsapp.WhatsApp.shared/Media/Profile\\12345678-1709851420.thumb",
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"their_avatar_thumb": None,
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"status": None,
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"messages": {
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"24690": {
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"from_me": True,
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"timestamp": 1463926635.571629,
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"time": "10:17",
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"media": False,
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"key_id": "34B5EF10FBCA37B7E",
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"meta": False,
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"data": "I'm here",
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"sender": None,
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"safe": False,
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"mime": None,
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"reply": None,
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"quoted_data": None,
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"caption": None,
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"thumb": None,
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"sticker": False
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},
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"24691": {
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"from_me": False,
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"timestamp": 1463926641.571629,
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"time": "10:17",
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"media": False,
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"key_id": "34B5EF10FBCA37B8E",
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"meta": False,
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"data": "Great to see you",
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"sender": None,
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"safe": False,
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"mime": None,
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"reply": None,
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"quoted_data": None,
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"caption": None,
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"thumb": None,
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"sticker": False
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},
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"24692": {
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"from_me": False,
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"timestamp": 1463926642.571629,
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"time": "10:17",
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"media": False,
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"key_id": "34B5EF10FBCA37B9E",
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"meta": False,
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"data": "Hi there!",
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"sender": None,
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"safe": False,
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"mime": None,
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"reply": None,
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"quoted_data": None,
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"caption": None,
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"thumb": None,
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"sticker": False
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},
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}
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}
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}
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@pytest.fixture
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def mock_filesystem():
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with (
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patch("os.path.exists") as mock_exists,
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patch("os.makedirs") as mock_makedirs,
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patch("os.path.getmtime") as mock_getmtime,
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patch("os.listdir") as mock_listdir,
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patch("os.walk") as mock_walk,
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patch("shutil.copy2") as mock_copy2,
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):
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yield {
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"exists": mock_exists,
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"makedirs": mock_makedirs,
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"getmtime": mock_getmtime,
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"listdir": mock_listdir,
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"walk": mock_walk,
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"copy2": mock_copy2,
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}
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def test_incremental_merge_new_file(mock_filesystem):
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"""Test merging when target file doesn't exist"""
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source_dir = "/source"
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target_dir = "/target"
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media_dir = "media"
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# Setup mock filesystem
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mock_filesystem["exists"].side_effect = lambda x: x == "/source"
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mock_filesystem["listdir"].return_value = ["chat.json"]
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# Mock file operations
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mock_file_content = {
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"/source/chat.json": json.dumps(chat_data_1),
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}
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with patch("builtins.open", mock_open()) as mock_file:
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def mock_file_read(filename, mode="r"):
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content = mock_file_content.get(filename)
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file_mock = mock_open(read_data=content).return_value
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return file_mock
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mock_file.side_effect = mock_file_read
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# Run the function
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incremental_merge(source_dir, target_dir, media_dir)
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# Verify the operations
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mock_filesystem["makedirs"].assert_called_once_with(target_dir, exist_ok=True)
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mock_file.assert_any_call("/source/chat.json", "rb")
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mock_file.assert_any_call("/target/chat.json", "wb")
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def test_incremental_merge_existing_file_with_changes(mock_filesystem):
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"""Test merging when target file exists and has changes"""
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source_dir = "/source"
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target_dir = "/target"
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media_dir = "media"
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# Setup mock filesystem
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mock_filesystem["exists"].side_effect = lambda x: True
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mock_filesystem["listdir"].return_value = ["chat.json"]
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# Mock file operations
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mock_file_content = {
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"/source/chat.json": json.dumps(chat_data_2),
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"/target/chat.json": json.dumps(chat_data_1),
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}
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written_chunks = []
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def mock_file_write(data):
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written_chunks.append(data)
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mock_write = MagicMock(side_effect=mock_file_write)
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with patch("builtins.open", mock_open()) as mock_file:
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def mock_file_read(filename, mode="r"):
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content = mock_file_content.get(filename)
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file_mock = mock_open(read_data=content).return_value
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if mode == 'w':
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file_mock.write.side_effect = mock_write
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return file_mock
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mock_file.side_effect = mock_file_read
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# Run the function
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incremental_merge(source_dir, target_dir, media_dir)
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# Verify file operations - both files opened in text mode when target exists
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mock_file.assert_any_call("/source/chat.json", "r")
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mock_file.assert_any_call("/target/chat.json", "r")
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mock_file.assert_any_call("/target/chat.json", "w")
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# Verify write was called
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assert mock_write.called, "Write method was never called"
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# Combine chunks and parse JSON
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written_data = json.loads(''.join(written_chunks))
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# Verify the merged data is correct
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assert written_data is not None, "No data was written"
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assert written_data == chat_data_merged, "Merged data does not match expected result"
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# Verify specific message retention
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messages = written_data["12345678@s.whatsapp.net"]["messages"]
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assert "24690" in messages, "Common message should be present"
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assert "24691" in messages, "Target-only message should be preserved"
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assert "24692" in messages, "Source-only message should be added"
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assert len(messages) == 3, "Should have exactly 3 messages"
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def test_incremental_merge_existing_file_no_changes(mock_filesystem):
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"""Test merging when target file exists but has no changes"""
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source_dir = "/source"
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target_dir = "/target"
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media_dir = "media"
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# Setup mock filesystem
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mock_filesystem["exists"].side_effect = lambda x: True
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mock_filesystem["listdir"].return_value = ["chat.json"]
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# Mock file operations
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mock_file_content = {
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"/source/chat.json": json.dumps(chat_data_1),
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"/target/chat.json": json.dumps(chat_data_1),
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}
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with patch("builtins.open", mock_open()) as mock_file:
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def mock_file_read(filename, mode="r"):
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content = mock_file_content.get(filename)
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file_mock = mock_open(read_data=content).return_value
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return file_mock
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mock_file.side_effect = mock_file_read
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# Run the function
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incremental_merge(source_dir, target_dir, media_dir)
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# Verify no write operations occurred on target file
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write_calls = [call for call in mock_file.mock_calls if call[0] == "().write"]
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assert len(write_calls) == 0
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def test_incremental_merge_media_copy(mock_filesystem):
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"""Test media file copying during merge"""
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source_dir = "/source"
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target_dir = "/target"
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media_dir = "media"
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# Setup mock filesystem
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mock_filesystem["exists"].side_effect = lambda x: True
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mock_filesystem["listdir"].return_value = ["chat.json"]
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mock_filesystem["walk"].return_value = [
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("/source/media", ["subfolder"], ["file1.jpg"]),
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("/source/media/subfolder", [], ["file2.jpg"]),
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]
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mock_filesystem["getmtime"].side_effect = lambda x: 1000 if "source" in x else 500
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# Mock file operations
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mock_file_content = {
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"/source/chat.json": json.dumps(chat_data_1),
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"/target/chat.json": json.dumps(chat_data_1),
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}
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with patch("builtins.open", mock_open()) as mock_file:
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def mock_file_read(filename, mode="r"):
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content = mock_file_content.get(filename)
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file_mock = mock_open(read_data=content).return_value
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return file_mock
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mock_file.side_effect = mock_file_read
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# Run the function
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incremental_merge(source_dir, target_dir, media_dir)
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# Verify media file operations
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assert (
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mock_filesystem["makedirs"].call_count >= 2
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) # At least target dir and media dir
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assert mock_filesystem["copy2"].call_count == 2 # Two media files copied
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