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

[xennygrimmato]

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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()