Mocking session in a Spock test for a java class

Spock is an excellent test framework that is built on top of Groovy and can be used to replace JUnit for testing Java classes. The majority of spock syntax is simple, but sometimes we run into issues where it is difficult to mock a class. Session is one of those examples. Given we want to do something simple, say get the name from Spring Security in session we’d have a method call like this

private String getUserId() {
Authentication auth = SecurityContextHolder.getContext().getAuthentication();
return auth.getName();
}

To test this we need to mock session for this method and also for any method that calls this private method. To do so you need to mock the Authentication class and the SecurityContext class. Since this mocking is needed in multiple methods I’ve created a separate method in my spock class to mock the security context. The full test and method look like below

void "test getUserId"() {
given:
setSecurityContext()
when:
def response = service.getUserId()
then:
response == "hello"
}
def setSecurityContext() {
def authentication = Mock(Authentication)
authentication.getName() >> "hello"
def securityContext = Mock(SecurityContext)
securityContext.getAuthentication() >> authentication
SecurityContextHolder.setContext(securityContext)
}

Has anyone found an easier way to do this? Or is this the way it needs to be?

Moving a file from a local computer to a server through a jump server

This is a problem I’ve been routinely facing at work because we have new firewall rules and can only access new servers through a jump box. Accessing the server through ssh isn’t a problem after I’ve ssh’d into the jump server, but moving a file from my local computer to the other server is a pain. What you need to do is move the file from your local computer to an accesible directory on the jump server. For me this involves using WinSCP to drag and drop the file to my /home/mbusche directory.

Once the file has been moved to the jump server you need to use the scp command to move the file from the jump server to the other server. In my case the command looks something like this.

scp /home/mubusche/sonar.jar mbusche@cvms1255:/home/mbusche/

The syntax is scp fileLocationOnCurrentServer username@servername:folderLocationToMoveFile/

Now generally you won’t have write access to all folders under your username and may need to sudo in as another user to move the file to the directory you need. To do that you need to login to the destination server via ssh, sign in as a user with permissions and then move the folder

ssh serverName
sudo su - userWithAccess
sudo mv /home/mbusche/sonar.jar /webdata/plugins/