kdb

QCumber for unit testing in KDB

I'm trying to figure out how to use the qcumber unit-testing library.

I have src/ti.q

sma: {mavg[x; y]}; /simple moving average

and tests/sma.quke

feature sma
    before
        inputData: 1 2 3 4 5 6 7 8 9 10;
        expectedOutput: 1 1.5 2 2.5 3 4 5 6 7 8;
        period: 5;
    should
        expect
            .qu.compare[expectedOutput; sma[period;inputData]]

I run the test via q $AXLIBRARIES_HOME/ws/qcumber.q_ -src ./src/ti.q -test ./tests -color -showAll which gives

Starting qCumber: q test runner

q)Loading src file: src/ti.q
Running tests: tests

file ti.quke
    feature sma
        (should)
            - fail | (expect)
                error: inputData (line 7)


Summary:
0 tests passed
0 benchmarks failed
1 tests failed
0 tests skipped

Clearly there is an issue with my tests/sma.quke file but I haven't been able to figure out how to pass in constants from the documentation at Testing framework for q(.qu). How do I get my expect block to see the variables defined in the before block (If indeed block is what's required)?

Solution

  • You need to set the variables in the before block as global variables, like:

    feature sma
    before
        .test.inputData: 1 2 3 4 5 6 7 8 9 10;
        .test.expectedOutput: 1 1.5 2 2.5 3 4 5 6 7 8;
        .test.period: 5;
    should
        expect
            .qu.compare[.test.expectedOutput; sma[.test.period;.test.inputData]]