testing infrastructure

[mlubin]

No description provided.

[IainNZ]

Basic tests for Variable, AffExpr, and QuadExpr done - see output for a TODO.
Next step is operator overload testing - need lots of * and / and quadratic stuff to give it a good workout. I found my QuadExpr test, which is just testing string-ifying, caught a bug already!

[mlubin]

I added some functionality to efficiently merge duplicate coefficients, if you'd like to take a look to do a similar thing for printing.

[IainNZ]

Todo: test coverage for 8ede799 -like issues

[mlubin]

I added some of this in 1f3a192. I wouldn't call it complete though.

[IainNZ]

Nice - maybe I'm missing it, but does it have the test that caused the bug you fixed recently, the one where the indexing was dependent e.g. i=1:N, j=1:i

[mlubin]

No, it doesn't.

[mlubin]

Just added: cb2d793.

[IainNZ]

👍

[IainNZ]

Doing pretty good now. Constraints could probably do with more test coverage, I think a couple of unit tests each for MPS and LP just to ensure we don't accidently introduce bugs would be good. Then I guess whatever random models we come up for those, also run them through solve. Once thats done, I'd be willing to close this issue, with the idea that we be from now on, so a) no pushing without running tests, and b) once we start adding stuff, e.g. quadratic, duals, we update/add tests
I don't really care too much about TravisCI integration, its probably not worth it.

[mlubin]

Sounds like a plan.

[mlubin]

Actually, it might be helpful to have TravisCI integration especially if we're testing with different solvers. This way, issues with Clp and CoinMP packages will also show up. Not high priority, but definitely useful.

[IainNZ]

Oh yeah, good point. A test for the wider infrastructure!

[IainNZ]

Added Travis-CI stuff
HOWEVER
its failing write now because of JuliaLang/julia#3464 - hopefully that'll be fixed in the next nightly

[IainNZ]

Once you consider constraints, and we add tests, I'd be keen to close this issue. We can add tests for quadratic objective as we go.

[mlubin]

The travis build passes now, and constraints are a separate issue, so let's close this.