Fix deprecation warnings.

tests/run_tests.py

@@ -28,6 +28,7 @@ from PIL import Image, ImageChops
 from selenium.common.exceptions import TimeoutException
 from selenium import webdriver
 from selenium.webdriver.common.action_chains import ActionChains
+from selenium.webdriver.common.by import By
 
 
 class PannellumServer(SimpleHTTPRequestHandler):
@@ -82,7 +83,7 @@ class PannellumTester(object):
     def take_screenshot(self, element_id, filename=None):
         """Take a screenshot of an element with a given ID.
         """
-        element = self.browser.find_element_by_id(element_id)
+        element = self.browser.find_element(By.ID, element_id)
         img = Image.open(io.BytesIO(element.screenshot_as_png)).convert("RGB")
         if filename is not None:
             img.save(filename)
@@ -128,10 +129,10 @@ class PannellumTester(object):
         assert self.browser.execute_script(
             "return viewer.getPitch() == 30 && viewer.getYaw() == -20 && viewer.getHfov() == 90"
         )
-        self.browser.find_element_by_class_name("pnlm-zoom-in").click()
+        self.browser.find_element(By.CLASS_NAME, "pnlm-zoom-in").click()
         time.sleep(1)
         assert self.browser.execute_script("return viewer.getHfov() == 85")
-        self.browser.find_element_by_class_name("pnlm-zoom-out").click()
+        self.browser.find_element(By.CLASS_NAME, "pnlm-zoom-out").click()
         time.sleep(1)
         assert self.browser.execute_script("return viewer.getHfov() == 90")
         print("PASS: movement")
@@ -161,13 +162,13 @@ class PannellumTester(object):
         self.browser.execute_script("viewer.setYaw(32)")
         time.sleep(2)
         action = ActionChains(self.browser)
-        elem = self.browser.find_element_by_class_name("pnlm-zoom-in")
+        elem = self.browser.find_element(By.CLASS_NAME, "pnlm-zoom-in")
         action.move_to_element(elem).move_by_offset(1, 1).click().perform()
         assert self.browser.execute_script("return viewer.getHfov() == 95")
         print("PASS: hot spots below UI")
 
         # Check hot spot
-        self.browser.find_element_by_class_name("pnlm-scene").click()
+        self.browser.find_element(By.CLASS_NAME, "pnlm-scene").click()
         time.sleep(5)
         assert self.browser.execute_script("return viewer.getScene() == 'multires'")
         print("PASS: hot spot")
@@ -184,8 +185,8 @@ class PannellumTester(object):
         # Check hotspot dragging - move from (20, 20) to (0, 0)
         action = ActionChains(self.browser)
         action.drag_and_drop(
-            self.browser.find_element_by_class_name("pnlm-hotspot"),
-            self.browser.find_element_by_class_name(
+            self.browser.find_element(By.CLASS_NAME, "pnlm-hotspot"),
+            self.browser.find_element(By.CLASS_NAME,
                 "pnlm-render-container"
             ),  # drops in the middle of the element
         )