Add invocation test for preferred colorscheme

With the addition of blink-settings for ensuring the correct color
scheme, this test makes sure the browser is obeying it via a media
match query through javascript. Any HTML page will do, so
`qute://version` is opened and tested against.

(cherry picked from commit 6feaeb247921de22318a7cc18251260ad1adbb86)

1 files changed, 20 insertions, 0 deletions

diff --git a/tests/end2end/test_invocations.py b/tests/end2end/test_invocations.py
index cd9aefe16..7fc38cdc4 100644
--- a/tests/end2end/test_invocations.py
+++ b/tests/end2end/test_invocations.py
@@ -405,3 +405,23 @@ def test_qute_settings_persistence(short_tmpdir, request, quteproc_new):
 
     quteproc_new.send_cmd(':quit')
     quteproc_new.wait_for_quit()
+
+
+@pytest.mark.qtwebkit_skip
+@utils.qt514
+def test_preferred_colorscheme(request, quteproc_new):
+    """Make sure the the preferred colorscheme is set."""
+    args = _base_args(request.config) + [
+        '--temp-basedir',
+        '-s', 'colors.webpage.prefers_color_scheme_dark', 'true',
+    ]
+    quteproc_new.start(args)
+
+    quteproc_new.open_path("qute://version")
+    quteproc_new.send_cmd(':jseval --world main '
+                          'matchMedia("(prefers-color-scheme: dark)").matches')
+    line = quteproc_new.wait_for(message='True')
+    line.expected = True
+
+    quteproc_new.send_cmd(':quit')
+    quteproc_new.wait_for_quit()