openlp/tests/interfaces/openlp_core/widgets/test_views.py

# -*- coding: utf-8 -*-

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# OpenLP - Open Source Lyrics Projection                                 #
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# Copyright (c) 2008-2020 OpenLP Developers                              #
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"""
    Package to test the openlp.core.widgets.views.
"""
import pytest
from unittest.mock import patch

from PyQt5 import QtWidgets

from openlp.core.common.registry import Registry
from openlp.core.lib.serviceitem import ServiceItem
from openlp.core.widgets.views import ListPreviewWidget
from tests.utils.osdinteraction import read_service_from_file


@pytest.fixture()
def preview_widget(settings):
    main_window = QtWidgets.QMainWindow()
    Registry().register('main_window', main_window)
    p_widget = ListPreviewWidget(main_window, 2)
    return p_widget


def test_initial_slide_count(preview_widget):
    """
    Test the initial slide count .
    """
    # GIVEN: A new ListPreviewWidget instance.
    # WHEN: No SlideItem has been added yet.
    # THEN: The count of items should be zero.
    assert preview_widget.slide_count() == 0, 'The slide list should be empty.'


def test_initial_slide_number(preview_widget):
    """
    Test the initial current slide number.
    """
    # GIVEN: A new ListPreviewWidget instance.
    # WHEN: No SlideItem has been added yet.
    # THEN: The number of the current item should be -1.
    assert preview_widget.current_slide_number() == -1, 'The slide number should be -1.'


def test_replace_service_item(preview_widget, state_media):
    """
    Test item counts and current number with a service item.
    """
    # GIVEN: A ServiceItem with two frames.
    service_item = ServiceItem(None)
    service = read_service_from_file('serviceitem_image_3.osj')
    with patch('os.path.exists') and patch('openlp.core.lib.serviceitem.sha256_file_hash'):
        service_item.set_from_service(service[0])
    # WHEN: Added to the preview widget.
    preview_widget.replace_service_item(service_item, 1, 1)
    # THEN: The slide count and number should fit.
    assert preview_widget.slide_count() == 2, 'The slide count should be 2.'
    assert preview_widget.current_slide_number() == 1, 'The current slide number should  be 1.'


def test_change_slide(preview_widget, state_media):
    """
    Test the change_slide method.
    """
    # GIVEN: A ServiceItem with two frames content.
    service_item = ServiceItem(None)
    service = read_service_from_file('serviceitem_image_3.osj')
    with patch('os.path.exists') and patch('openlp.core.lib.serviceitem.sha256_file_hash'):
        service_item.set_from_service(service[0])
    # WHEN: Added to the preview widget and switched to the second frame.
    preview_widget.replace_service_item(service_item, 1, 0)
    preview_widget.change_slide(1)
    # THEN: The current_slide_number should reflect the change.
    assert preview_widget.current_slide_number() == 1, 'The current slide number should  be 1.'