Selenium: Source Folder Paths have wrong base

[tsmaeder]

ConfigureClasspathBaseTest fails because of the value the source folder paths we show in the dialog:
expected is '/ConfigureClasspathBase_5fah/my-lib/src/main/java', but we show '/my-lib/src/main/java'. I suspect that we are using the eclipse project path instead of the locationURI.

org.openqa.selenium.TimeoutException: Expected condition failed: waiting for org.eclipse.che.selenium.pageobject.ConfigureClasspath$$Lambda$194/1036591098@1b286f4d (tried for 5 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.openqa.selenium.support.ui.FluentWait.until(FluentWait.java:205) at org.eclipse.che.selenium.pageobject.ConfigureClasspath.waitExpectedTextJarsAndFolderArea(ConfigureClasspath.java:162) at org.eclipse.che.selenium.plainjava.ConfigureClasspathBaseTest.checkConfigureClasspath(ConfigureClasspathBaseTest.java:83) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at

[tsmaeder]

There are different cases to be considered:
For Project entries, the location should resolve to a single project in the eclipse workspace. While Eclipse would support mounting the same folder in two projects, I don't think this can happen in reality. If it does, there is not really a problem, because both would share the same .classpath file, and thus present the exact same classes and reexported classpath entries to the consumer.
For source folders, we know that it must be inside the project in question. Note that we might have the same folder mounted in multiple projects, for example in the case of nested maven projects. I think it's probably best in this case to use the project-relative path to specify a folder.