[Language server] Sometimes Hover popup window does not appear

[SkorikSergey]

Description

We have unexpected fail of YamlFileEditingTest selenium test. The test fails when checking expected text from hover popup. We should clarify reason and fix it.

Remarks

Randomly reproducing
Related selenium tests: YamlFileEditingTest, GolangFileEditingTest

Reproduction Steps:

1. Create workspace through Dashboard based on Node stack with any project.
2. Enable Yaml language server and start the workspace.
3. Set YAML schema:
   • menu Profile -> Preferences.
   • select Yaml -> click 'Add Schema Url' button -> type "kubernetes".
4. Create "openshift.yaml" file and add content:

apiVersion: v1
kind: PersistentVolume
metadata:

4. Move the mouse pointer over the kind: PersistentVolume text several times.

Expected result:
Hover popup with text Kind is a string value representing the REST resource this object represents.appeared on every move.

Actual result:
After some movement the Hover pop-up window doesn't appear. There is an error message in the browser console(see screenshot).

Screenshot:

Report with reproduced problem:
https://ci.codenvycorp.com/view/qa/job/che-integration-tests-multiuser-master-ocp/309/Selenium_20tests_20report/

**Log:**

``` org.openqa.selenium.TimeoutException: Expected condition failed: waiting for visibility of [[RemoteWebDriver: chrome on LINUX (64c1f911-8538-412f-90a8-1d790b81b40a)] -> xpath: //div[@Class='textviewTooltip'][last()]] (tried for 10 second(s) with 500 MILLISECONDS interval) Build info: version: '3.0.1', revision: '1969d75', time: '2016-10-18 09:49:13 -0700' System info: host: 'slave4.codenvycorp.com', ip: '127.0.0.1', os.name: 'Linux', os.arch: 'amd64', os.version: '3.10.0-514.16.1.el7.x86_64', java.version: '1.8.0_102' Driver info: org.eclipse.che.selenium.core.SeleniumWebDriver at org.openqa.selenium.support.ui.WebDriverWait.timeoutException(WebDriverWait.java:80) at org.openqa.selenium.support.ui.FluentWait.until(FluentWait.java:265) at org.eclipse.che.selenium.core.webdriver.SeleniumWebDriverHelper.waitVisibility(SeleniumWebDriverHelper.java:158) at org.eclipse.che.selenium.core.webdriver.SeleniumWebDriverHelper.lambda$waitTextContains$7(SeleniumWebDriverHelper.java:746) at org.openqa.selenium.support.ui.FluentWait.until(FluentWait.java:238) at org.eclipse.che.selenium.core.webdriver.SeleniumWebDriverHelper.waitTextContains(SeleniumWebDriverHelper.java:744) at org.eclipse.che.selenium.core.webdriver.SeleniumWebDriverHelper.waitTextContains(SeleniumWebDriverHelper.java:758) at org.eclipse.che.selenium.pageobject.CodenvyEditor.waitTextInHoverPopup(CodenvyEditor.java:444) at org.eclipse.che.selenium.languageserver.YamlFileEditingTest.checkHoverFeature(YamlFileEditingTest.java:162) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:85) at org.testng.internal.Invoker.invokeMethod(Invoker.java:696) at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:882) at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1189) at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:124) at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:108) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) ```

[SkorikSergey]

Not relevant anymore. Closing.