Interactions: unusable junit report in case methods where specified via variables

Originally reported on Google Code with ID 257

What steps will reproduce the problem? If possible, provide source code and
stack trace.

Assuming the following interactions is specified:

   List methods = ['method_a', 'method_b', 'method_c']

   then:
   for(String method in methods)
     1 * someMock."${method}"(_)

The junit report would look like:

   junit.framework.AssertionFailedError: Too few invocations for:

   1 * someMock."${method}"(_) (0 invocations)
   1 * someMock."${method}"(_) (0 invocations)
   1 * someMock."${method}"(_) (0 invocations)

But I would expect that the report looks like:

   junit.framework.AssertionFailedError: Too few invocations for:

   1 * someMock.method_a(_) (0 invocations)
   1 * someMock.method_b(_) (0 invocations)
   1 * someMock.method_c(_) (0 invocations)

What version of Spock and Groovy are you using?
Spock version: 0.6
Groovy version: 1.7

Please provide any additional information below. You can also assign
labels.

See also discussion in forum https://groups.google.com/forum/#!topic/spockframework/tC4nLfFv8cY

Reported by markus_ketterer@gmx.de on 2012-06-19 11:39:59

Reproduce the interaction example using Spock 0.6 and Groovy 1.7, comparing the current JUnit failure report with the expected method names. Trace the interaction reporting or rendering path responsible for the failure message. Done means variable-based interactions are reported with method_a, method_b, and method_c rather than the unevaluated expression.