fixup! test(selenium): run tests across multiple {browser, js} combin…

…ations

app/general/tests/test_frontend.py

@@ -4,10 +4,12 @@
 from django.test import tag
 from selenium.common import TimeoutException
 from selenium.webdriver.chrome.webdriver import Options as ChromeOptions, WebDriver as ChromeWebDriver
-from selenium.webdriver.firefox.webdriver import Options as FirefoxOptions, WebDriver as FirefoxWebDriver
+from selenium.webdriver.firefox.webdriver import Options as FirefoxOptions, WebDriver as FirefoxWebDriver, \
+    Service as FirefoxService
 from selenium.webdriver.safari.webdriver import Options as SafariOptions, WebDriver as SafariWebDriver
 from selenium.webdriver.common.by import By
 from selenium.webdriver.support.wait import WebDriverWait
+import subprocess
 
 # Wait timeout in seconds
 WAIT_TIMEOUT = 5
@@ -30,7 +32,12 @@ def setUpClass(cls):
             opts.add_argument("--window-size=1920,1080")
             cls.driver = ChromeWebDriver(opts)
         elif browser == "firefox":
-            cls.driver = FirefoxWebDriver()
+            # From https://stackoverflow.com/a/74188454
+            options = FirefoxOptions()
+            options.binary_location = subprocess.getoutput("find /snap/firefox -name firefox").split("\n")[-1]
+            geckodriver_loc = subprocess.getoutput("find /snap/firefox -name geckodriver").split("\n")[-1]
+            service = FirefoxService(executable_path=geckodriver_loc)
+            cls.driver = FirefoxWebDriver(service=service, options=options)
         elif browser == "safari":
             cls.driver = SafariWebDriver()