Selenium tests fail when response is slow.

Increased implicit wait on message pop ups.
Gives time for slow connections to wait for message.

Find_elements retry. Gives an additional opportuninty
for elements to be found.

Additional attempts for _execute gives time for
elements to move or dissapear when collision is a
problem.

Change-Id: I94670628c179f7291162f2c25947673f03106fc2
Closes-Bug: #1813670

horizon/test/webdriver.py

@@ -37,12 +37,26 @@ class WrapperFindOverride(object):
     """Mixin for overriding find_element methods."""
 
     def find_element(self, by=by.By.ID, value=None):
-        web_el = super(WrapperFindOverride, self).find_element(by, value)
+        repeat = range(2)
+        for i in repeat:
+            try:
+                web_el = super(WrapperFindOverride, self).find_element(
+                    by, value)
+            except exceptions.NoSuchElementException:
+                if i == repeat[-1]:
+                    raise
         return WebElementWrapper(web_el.parent, web_el.id, (by, value),
                                  self)
 
     def find_elements(self, by=by.By.ID, value=None):
-        web_els = super(WrapperFindOverride, self).find_elements(by, value)
+        repeat = range(2)
+        for i in repeat:
+            try:
+                web_els = super(WrapperFindOverride, self).find_elements(
+                    by, value)
+            except exceptions.NoSuchElementException:
+                if i == repeat[-1]:
+                    raise
         result = []
         for index, web_el in enumerate(web_els):
             result.append(WebElementWrapper(web_el.parent, web_el.id,
@@ -70,18 +84,6 @@ class WebElementWrapper(WrapperFindOverride, webelement.WebElement):
         # we need his position in the returned list
         self.index = index
 
-    def reload_request(self, locator, index=None):
-        try:
-            # element was found out via find_elements
-            if index is not None:
-                web_els = self.src_element.find_elements(*locator)
-                web_el = web_els[index]
-            else:
-                web_el = self.src_element.find_element(*locator)
-        except (exceptions.NoSuchElementException, IndexError):
-            return False
-        return web_el
-
     def _reload_element(self):
         """Method for starting reload process on current instance."""
         web_el = self.src_element.reload_request(self.locator, self.index)
@@ -97,11 +99,12 @@ class WebElementWrapper(WrapperFindOverride, webelement.WebElement):
         # exception, because driver.implicitly_wait delegates this to browser.
         # Just we need to catch StaleElement exception, reload chain of element
         # parents and then to execute command again.
-        repeat = range(2)
+        repeat = range(20)
         for i in repeat:
             try:
                 return super(WebElementWrapper, self)._execute(command, params)
-            except exceptions.StaleElementReferenceException:
+            except (exceptions.StaleElementReferenceException,
+                    exceptions.ElementClickInterceptedException):
                 if i == repeat[-1]:
                     raise
                 if not self._reload_element():

openstack_dashboard/test/integration_tests/config.py

@@ -84,6 +84,9 @@ AvailableServiceGroup = [
 ]
 
 SeleniumGroup = [
+    cfg.FloatOpt('message_implicit_wait',
+                 default=0.1,
+                 help="Time to wait for confirmation modal in seconds"),
     cfg.IntOpt('implicit_wait',
                default=10,
                help="Implicit wait timeout in seconds"),

openstack_dashboard/test/integration_tests/horizon.conf

@@ -10,6 +10,10 @@ dashboard_url=http://localhost/dashboard/
 help_url=https://docs.openstack.org/
 
 [selenium]
+# Timeout in seconds to wait for message confirmation modal
+# (float value)
+message_implicit_wait=0.1
+
 # Timeout in seconds to wait for a page to become available
 # (integer value)
 page_timeout=60

openstack_dashboard/test/integration_tests/regions/messages.py

@@ -28,9 +28,9 @@ class MessageRegion(baseregion.BaseRegion):
 
     def __init__(self, driver, conf, level=SUCCESS):
         self._default_src_locator = self._msg_locator(level)
-        # NOTE(tsufiev): we cannot use self._turn_off_implicit_wait() at this
-        # point, because the instance is not initialized by ancestor's __init__
-        driver.implicitly_wait(0.1)
+        # NOTE(nhelgeson): Running selenium on remote servers
+        # requires extra time to wait for message to pop up.
+        driver.implicitly_wait(conf.selenium.message_implicit_wait)
         try:
             super(MessageRegion, self).__init__(driver, conf)
         except NoSuchElementException: