Expanding Brozzler's logging in capabilities

Some sites don't allow you to login without clicking on a button to open a retracted modal.

This update to the login code allows Brozzler to click on all elements that we think are related to opening a login modal.

Then, if there isn't a regular form, we will attempt to fill out abnormal form schemes.

The test_try_login test has been expanded for the new type of login form we are supporting.

tests/test_brozzling.py

@@ -267,6 +267,7 @@ def test_try_login(httpd):
         response_urls.append(msg['params']['response']['url'])
     chrome_exe = brozzler.suggest_default_chrome_exe()
     form_url = 'http://localhost:%s/site11/form1.html' % httpd.server_port
+    form_url_other = 'http://localhost:%s/site11/form2.html' % httpd.server_port
     favicon_url = 'http://localhost:%s/favicon.ico' % httpd.server_port
     login_url = 'http://localhost:%s/login-action' % httpd.server_port
     # When username and password are defined and initial page has login form,
@@ -282,6 +283,19 @@ def test_try_login(httpd):
     assert response_urls[2] == login_url
     assert response_urls[3] == form_url
 
+    # We are now supporting a different type of form, we'll test that here.
+    response_urls = []
+    username = 'user1'
+    password = 'pass1'
+    with brozzler.Browser(chrome_exe=chrome_exe) as browser:
+        browser.browse_page(form_url_other, username=username, password=password,
+                            on_response=on_response)
+    assert len(response_urls) == 4
+    assert response_urls[0] == form_url_other
+    assert response_urls[1] == favicon_url
+    assert response_urls[2] == login_url
+    assert response_urls[3] == form_url_other
+
     # When username and password are not defined, just load the initial page.
     response_urls = []
     with brozzler.Browser(chrome_exe=chrome_exe) as browser: