Re: Enabling Only Top-Level Unittests

[Basile B. via Digitalmars-d-learn]

On Thursday, 21 April 2016 at 19:38:21 UTC, Nordlöw wrote:
On Thursday, 21 April 2016 at 12:35:42 UTC, Anonymouse wrote:
Then dmd -unittest -version=TestDeps if you want them run.

This doesn't make things easier. I want to disable the builtin 
unittests of the modules I've imported. This requires me to add 
a

version(test_MODULE) unittest

in each module named MODULE.

This is really inconvenient.

You could anotate your user/top level tests and select only those 
with __traits(getUnittest,...) and hasUDA(). Unfortunately it 
seems that there's a flaw because in a program all the tests will 
be automatically executed once then again those that are anotated.

---
#!runnable-flags: -unittest
module m;

import std.stdio;

enum USERTEST;

@USERTEST unittest // exeuted twice
{
    writeln("bang");
}

unittest // executed once
{
    writeln("bing");
}

void main(string[] args)
{
    import std.traits;
    foreach(t; __traits(getUnitTests, m))
    {
        static if (hasUDA!(t, USERTEST))
            t();
    }
}
---

But...
A solution that would work for both a library and a program is 
this:

---
module m;

import std.stdio;

enum USERTEST;

@USERTEST void test0()
{
    writeln("bing");
}

@USERTEST void test1()
{
    writeln("bang");
}

unittest
{
    // not even compiled
}

void runUserTests(Modules...)()
{
    import std.traits;
    static if (Modules.length > 1)
        runModuleTests!(Modules[1..$]);
    else static if (Modules.length == 1)
    {
        foreach(member; __traits(allMembers, Modules[0]))
            foreach(o; __traits(getOverloads, Modules[0], member))
                static if (hasUDA!(o, USERTEST) && 
(Parameters!o).length == 0)
                    o();
    }
}

void main()
{
    runUserTests!m;
}
---

I think a DMD option should be added to allow the tests to be 
compiled but never called, something like -runTests. Because the 
first solution is much more attractive.