[autotest] Adjust Seat test for changes in 990e88ac

The text input change creates an additional serial, so the check
for last generated serial on the Display fails. The test is now
adjusted to the new semantics. A more reliable way would be to
verify the serial on the SeatInterface, though.

src/wayland/autotests/client/test_wayland_seat.cpp

@@ -1107,7 +1107,8 @@ void TestWaylandSeat::testKeyboard()
     QCOMPARE(modifierSpy.first().at(2).value<quint32>(), quint32(0));
     QCOMPARE(modifierSpy.first().at(3).value<quint32>(), quint32(0));
     QCOMPARE(enteredSpy.count(), 1);
-    QCOMPARE(enteredSpy.first().first().value<quint32>(), m_display->serial());
+    // TODO: get through API
+    QCOMPARE(enteredSpy.first().first().value<quint32>(), m_display->serial() - 1);
 
     QSignalSpy keyChangedSpy(keyboard, SIGNAL(keyChanged(quint32,KWayland::Client::Keyboard::KeyState,quint32)));
     QVERIFY(keyChangedSpy.isValid());
@@ -1160,7 +1161,8 @@ void TestWaylandSeat::testKeyboard()
     QVERIFY(!m_seatInterface->focusedKeyboard());
     QVERIFY(leftSpy.wait());
     QCOMPARE(leftSpy.count(), 1);
-    QCOMPARE(leftSpy.first().first().value<quint32>(), m_display->serial());
+    // TODO: get through API
+    QCOMPARE(leftSpy.first().first().value<quint32>(), m_display->serial() -1 );
 
     QVERIFY(!keyboard->enteredSurface());
     QVERIFY(!ckeyboard.enteredSurface());