[Java] Extract all unit test methods and the methods they call

[xennygrimmato]

I want to extract all unit test methods (Junit 4 or 5) and the corresponding methods that they test. I want to learn how to write a query for this.

Based on my current knowledge, I can do a from Call call and then add some heuristic-based checks on call.getCallee() and call.getCaller().

For example:

/**
 * @name Call graph
 * @description Call graph.
 * @kind problem
 * @id java/call-graph
 * @tags testability
 */

import java

// Track calls from test methods to other methods within the codebase.
from Call call
where call.getCaller().getName().matches("%test%")
select call.getCallee(), "calls", call.getCaller()

I get the following error:
Error was: Expected result pattern(s) are not present for problem query: Expected alternating entity/string and string columns. [INVALID_RESULT_PATTERNS]

What am I doing wrong here? Also, what would be a better way to write this query?

[aibaars]

A query with @kind problem should select a location, a message followed by zero or more pairs of element and link text.

In this case you could write select call.getCallee(), "is called by $@", call.getCaller(), call.getCaller().getName()

[rvermeulen]

Hi @xennygrimmato,

I believe @aibaars has provided you with the necessary information to use to correct select syntax for queries of kind problem, therefore I'm proceeding with closing this issue.

If you have any further questions, feel free to re-open this issue.

Thanks!