bitbake: toaster/tests: Fix automated testing failures

The display window scrolling mechanism we were using was failing in one case
and needed in another. After trying various approaches, this one with
window.scrollTo seems to work and fixes the test failures.

(Bitbake rev: f1175778108a559e1dd0d55cb68f42816c86f393)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/toaster/tests/browser/test_layerdetails_page.py

@@ -108,6 +108,8 @@ class TestLayerDetailsPage(SeleniumTestCase):
             save_btn.click()
 
         self.wait_until_visible("#save-changes-for-switch")
+        # Ensure scrolled into view
+        self.driver.execute_script('window.scrollTo({behavior: "instant", top: 0, left: 0})')
         btn_save_chg_for_switch = self.wait_until_clickable(
             "#save-changes-for-switch")
         btn_save_chg_for_switch.click()

bitbake/lib/toaster/tests/functional/test_project_page.py

@@ -685,17 +685,17 @@ class TestProjectPage(TestProjectPageBase):
             'active', str(self.find('#information').get_attribute('class'))
         )
         # Check second tab (recipes)
-        # Ensure page is scrolled to the top
-        self.driver.find_element(By.XPATH, '//body').send_keys(Keys.CONTROL + Keys.HOME)
         self.wait_until_visible('.nav-tabs')
+        # Ensure page is scrolled to the top
+        self.driver.execute_script('window.scrollTo({behavior: "instant", top: 0, left: 0})')
         tabs[1].click()
         self.assertIn(
             'active', str(self.find('#recipes').get_attribute('class'))
         )
         # Check third tab (machines)
-        # Ensure page is scrolled to the top
-        self.driver.find_element(By.XPATH, '//body').send_keys(Keys.CONTROL + Keys.HOME)
         self.wait_until_visible('.nav-tabs')
+        # Ensure page is scrolled to the top
+        self.driver.execute_script('window.scrollTo({behavior: "instant", top: 0, left: 0})')
         tabs[2].click()
         self.assertIn(
             'active', str(self.find('#machines').get_attribute('class'))