react-native-bundle-extractor/tests/test_extractor.py at master · jmp/react-native-bundle-extractor · GitHub

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import io
import zipfile
from unittest.mock import Mock, patch

from extractor.extractor import (
    extract_bundle,
    extract_bundle_from_apk,
    extract_bundle_from_device,
    pull_apk_from_device,
)


def test_extract_bundle_from_apk(tmp_path):
    bundle_in_path = "assets/index.android.bundle"
    bundle_out_path = tmp_path / "index.android.bundle"
    zip_bytes = io.BytesIO()
    with zipfile.ZipFile(zip_bytes, mode="w") as zf:
        zf.writestr("AndroidManifest.xml", b"")
        zf.writestr("classes.dex", b"")
        zf.writestr(bundle_in_path, b"const a=42 ;")
    apk_path = tmp_path / "test_extract.apk"
    apk_path.write_bytes(zip_bytes.getvalue())
    extract_bundle_from_apk(apk_path, bundle_in_path, bundle_out_path)
    assert bundle_out_path.exists()
    assert bundle_out_path.read_text() == "const a = 42;"


@patch("extractor.extractor.check_adb")
@patch("extractor.extractor.get_packages")
@patch("extractor.extractor.verify_package_exists")
@patch("extractor.extractor.find_package_path")
@patch("extractor.extractor.pull_path")
def test_pull_apk_from_device(
    mock_pull_path,
    mock_find_package_path,
    mock_verify_package_exists,
    mock_get_packages,
    mock_check_adb,
):
    package = "com.example.app"
    out_path = "/some/path/app.apk"

    mock_check_adb.return_value = None
    mock_get_packages.return_value = [package]
    mock_verify_package_exists.return_value = None
    mock_find_package_path.return_value = (
        f"/data/app/{package}-RGW6eku5yrzZ" f"062ftW4_7Q==/base.apk"
    )
    pull_apk_from_device(package, out_path)
    mock_pull_path.assert_called_with(
        mock_find_package_path.return_value,
        out_path,
    )


@patch("tempfile.NamedTemporaryFile")
@patch("extractor.extractor.pull_apk_from_device")
@patch("extractor.extractor.extract_bundle_from_apk")
def test_extract_bundle_from_device(
    mock_extract_bundle_from_apk,
    mock_pull_apk_from_device,
    mock_tmp,
):
    package = "com.example.app"
    bundle_in_path = "index.android.bundle.in"
    bundle_out_path = "index.android.bundle.out"
    tmp_filename = "temporary_file"
    mock_tmp.return_value.__enter__.return_value.name = tmp_filename
    extract_bundle_from_device(package, bundle_in_path, bundle_out_path)
    mock_pull_apk_from_device.assert_called_with(package, tmp_filename)
    mock_extract_bundle_from_apk.assert_called_with(
        tmp_filename,
        bundle_in_path,
        bundle_out_path,
    )


@patch("sys.exit")
@patch("extractor.extractor.is_apk", Mock())
@patch("extractor.extractor.extract_bundle_from_apk", Mock())
@patch("extractor.extractor.extract_bundle_from_device", Mock())
def test_extract_bundle_prints_usage_when_run_without_arguments(mock_exit, capsys):
    extract_bundle([])
    captured = capsys.readouterr()
    assert captured.err.startswith("usage:")
    mock_exit.assert_called_with(0)


@patch("sys.exit", Mock())
@patch("extractor.extractor.is_apk", Mock(return_value=True))
@patch("extractor.extractor.extract_bundle_from_apk")
def test_extract_bundle_with_existing_apk(mock_extract_bundle_from_apk):
    apk_path = "app.apk"
    extract_bundle([apk_path])
    mock_extract_bundle_from_apk.assert_called_with(
        apk_path,
        "assets/index.android.bundle",
        "index.android.bundle",
    )


@patch("sys.exit", Mock())
@patch("extractor.extractor.extract_bundle_from_device")
def test_extract_bundle_with_package(mock_extract_bundle_from_device):
    package = "com.example.app"
    extract_bundle([package])
    mock_extract_bundle_from_device.assert_called_with(
        package,
        "assets/index.android.bundle",
        "index.android.bundle",
    )


@patch("sys.exit")
def test_extract_bundle_with_invalid_package(mock_exit):
    extract_bundle(["test"])
    mock_exit.assert_called_with(1)


@patch("sys.exit")
@patch("extractor.extractor.parse_args")
def test_extract_bundle_with_keyboard_interrupt(mock_parse_args, mock_exit):
    mock_parse_args.side_effect = KeyboardInterrupt
    extract_bundle([])
    mock_exit.assert_called_with(1)


@patch("sys.exit")
@patch("extractor.extractor.parse_args")
def test_extract_bundle_exits_with_runtime_error(mock_parse_args, mock_exit):
    mock_parse_args.side_effect = RuntimeError
    extract_bundle([])
    mock_exit.assert_called_with(1)