how do env.Test()/BuildTest() pass data to the test program?

[feedhandler]

I'm trying to pass some data to my test, like this

env.BuildTest('my_test', 'my_test.cpp', data = 'testData.txt')

I was expecting the test program to be executed with the testData.txt passed on the command line

But the test program is just executed with no command line argument.

Is that supposed to happen? If so, what is the purpose of the data argument in env.Test()/BuildTest() ?

This is the output

Progress( SconstructBegin )
Progress( Begin sconscript: [./src/SConscript] )
Progress( Starting variant: [_build/src/gcc62/dbg/x86_64/c++1z] )
RunProcessTest(["_build/src/gcc62/dbg/x86_64/c++1z/final/my_test.stdout.log", "_build/src/gcc62/dbg/x86_64/c++1z/final/my_test.stderr.log", "_build/src/gcc62/dbg/x86_64/c++1z/final/my_test.report.json", "_build/src/gcc62/dbg/x86_64/c++1z/final/my_test.success"], ["_build/src/gcc62/dbg/x86_64/c++1z/final/my_test", "src/testData.txt"])

Starting Test Suite [_build/src/gcc62/dbg/x86_64/c++1z/working]

Test [my_test]...
cuppa: ProcessTest: Test returned with error code:  1
 = FAILED =  Time: Wall [ 00:00:00.006,220,032 ] CPU [ 00:00:00.010,000,000 ] CPU/Wall [ 160.77% ]

Progress( Finished variant: [_build/src/gcc62/dbg/x86_64/c++1z] )