qutebrowser/tests/unit/javascript/stylesheet/test_stylesheet.py

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# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:
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# Copyright 2017-2018 Jay Kamat
#
# This file is part of qutebrowser.
#
# qutebrowser is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# qutebrowser is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with qutebrowser. If not, see <http://www.gnu.org/licenses/>.
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"""Tests for stylesheet.js."""
import os
import pytest
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QtWebEngineWidgets = pytest.importorskip("PyQt5.QtWebEngineWidgets")
QWebEngineProfile = QtWebEngineWidgets.QWebEngineProfile
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from qutebrowser.utils import javascript
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DEFAULT_BODY_BG = "rgba(0, 0, 0, 0)"
GREEN_BODY_BG = "rgb(0, 255, 0)"
CSS_BODY_GREEN = "body {background-color: rgb(0, 255, 0);}"
CSS_BODY_RED = "body {background-color: rgb(255, 0, 0);}"
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class StylesheetTester:
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"""Helper class (for the stylesheet_tester fixture) for asserts.
Attributes:
js: The js_tester fixture.
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config_stub: The config stub object.
"""
def __init__(self, js_tester, config_stub):
self.js = js_tester
self.config_stub = config_stub
def init_stylesheet(self, css_file="green.css"):
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"""Initialize the stylesheet with a provided css file."""
css_path = os.path.join(os.path.dirname(__file__), css_file)
self.config_stub.val.content.user_stylesheets = css_path
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def set_css(self, css):
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"""Set document style to `css` via stylesheet.js."""
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code = javascript.assemble('stylesheet', 'set_css', css)
self.js.run(code, None)
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def check_set(self, value, css_style="background-color",
document_element="document.body"):
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"""Check whether the css in ELEMENT is set to VALUE."""
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self.js.run("console.log({document});"
"window.getComputedStyle({document}, null)"
".getPropertyValue('{prop}');".format(
document=document_element,
prop=javascript.string_escape(css_style)),
value)
def check_eq(self, one, two, true=True):
"""Check if one and two are equal."""
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self.js.run("{} === {};".format(one, two), true)
@pytest.fixture
def stylesheet_tester(js_tester_webengine, config_stub):
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"""Helper fixture to test stylesheets."""
ss_tester = StylesheetTester(js_tester_webengine, config_stub)
ss_tester.js.tab.show()
return ss_tester
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@pytest.mark.parametrize('page', ['stylesheet/simple.html',
'stylesheet/simple_bg_set_red.html'])
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def test_set_delayed(stylesheet_tester, page):
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"""Test a delayed invocation of set_css."""
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stylesheet_tester.js.load(page)
stylesheet_tester.init_stylesheet("none.css")
stylesheet_tester.set_css("body {background-color: rgb(0, 255, 0);}")
stylesheet_tester.check_set("rgb(0, 255, 0)")
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@pytest.mark.parametrize('page', ['stylesheet/simple.html',
'stylesheet/simple_bg_set_red.html'])
def test_set_clear_bg(stylesheet_tester, page):
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"""Test setting and clearing the stylesheet."""
stylesheet_tester.js.load('stylesheet/simple.html')
stylesheet_tester.init_stylesheet()
stylesheet_tester.check_set(GREEN_BODY_BG)
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stylesheet_tester.set_css("")
stylesheet_tester.check_set(DEFAULT_BODY_BG)
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def test_set_xml(stylesheet_tester):
"""Test stylesheet is applied without altering xml files."""
stylesheet_tester.js.load_file('stylesheet/simple.xml')
stylesheet_tester.init_stylesheet()
stylesheet_tester.check_set(GREEN_BODY_BG)
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stylesheet_tester.check_eq('"html"', "document.documentElement.nodeName")
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def test_set_svg(stylesheet_tester):
"""Test stylesheet is applied for svg files."""
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stylesheet_tester.js.load_file('../../../misc/cheatsheet.svg')
stylesheet_tester.init_stylesheet()
stylesheet_tester.check_set(GREEN_BODY_BG,
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document_element="document.documentElement")
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stylesheet_tester.check_eq('"svg"', "document.documentElement.nodeName")
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@pytest.mark.skip(reason="Too flaky, see #3771")
def test_set_error(stylesheet_tester, config_stub):
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"""Test stylesheet modifies file not found error pages."""
config_stub.changed.disconnect() # This test is flaky otherwise...
stylesheet_tester.init_stylesheet()
stylesheet_tester.js.tab._init_stylesheet()
stylesheet_tester.js.load_file('non-existent.html', force=True)
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stylesheet_tester.check_set(GREEN_BODY_BG)
def test_appendchild(stylesheet_tester):
stylesheet_tester.js.load('stylesheet/simple.html')
stylesheet_tester.init_stylesheet()
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js_test_file_path = ('../../tests/unit/javascript/stylesheet/'
'test_appendchild.js')
stylesheet_tester.js.run_file(js_test_file_path, {})