Fixed deprecated selenium headless property

Use headless argument instead in test_initializer

Author: lainets

selenium_test/test/test_initializer.py

@@ -29,11 +29,13 @@ def getDriver(self, headless: bool = False, browser: str = "Firefox") -> WebDriv
 
         if Browser.firefox.value == browser:
             options = FirefoxOptions()
-            options.headless = headless
+            if headless:
+                options.add_argument('-headless')
             driver = Firefox(options=options)
         elif Browser.chrome.value == browser:
             options = ChromeOptions()
-            options.headless = headless
+            if headless:
+                options.add_argument('-headless')
             driver = Chrome(chrome_options=options)
         else:
             raise ValueError(f"Browser value {browser} unknown")