#!/usr/bin/env python

import mozunit
import pytest
from mozdevice import ADBError


def test_is_app_installed(mock_adb_object):
    """Tests that is_app_installed returns True if app is installed."""
    assert mock_adb_object.is_app_installed("org.mozilla.geckoview_example")


def test_is_app_installed_not_installed(mock_adb_object):
    """Tests that is_app_installed returns False if provided app_name
    does not resolve."""
    assert not mock_adb_object.is_app_installed("some_random_name")


def test_is_app_installed_partial_name(mock_adb_object):
    """Tests that is_app_installed returns False if provided app_name
    is only a partial match."""
    assert not mock_adb_object.is_app_installed("fennec")


def test_is_app_installed_package_manager_error(mock_adb_object):
    """Tests that is_app_installed is able to raise an exception."""
    with pytest.raises(ADBError):
        mock_adb_object.is_app_installed("error")


def test_is_app_installed_no_installed_package_found(mock_adb_object):
    """Tests that is_app_installed is able to handle scenario
    where no installed packages are found."""
    assert not mock_adb_object.is_app_installed("none")


if __name__ == "__main__":
    mozunit.main()