Having trouble running any tests

[vsajip]

It's probably something dumb I'm doing, so I'd appreciate any pointers - I'm fairly new to D and dub. Here's my dub.json:

{
  "name": "dconfig",
  "authors": [
    "Vinay Sajip"
  ],
  "description": "A test.",
  "dependencies": {
    "d-unit": "~>0.9.0"
  }
}

and here's my test code:

module tests;

import dunit;

class MyFirstTest {

    mixin UnitTest;

    @Test
    public void shouldFail()
    {
        string expected = "bar";
        string actual = "baz";

        assertEquals(expected, actual);
    }
}

When I run dub test, I get:

Generating test runner configuration 'dconfig-test-library' for 'library' (library).
Performing "unittest" build using /usr/bin/dmd for x86_64.
d-unit 0.9.0: target for configuration "library" is up to date.
dconfig ~master: building configuration "dconfig-test-library"...
Linking...
To force a rebuild of up-to-date targets, run again with --force.
Running ./dconfig-test-library 
All unit tests have been run successfully.

But nothing seems to run, since no failure is printed. The dconfig-test-library certainly seems to contain the symbols for MyFirstTest and shouldFail, so why would the test not be run?

The D version is DMD64 D Compiler v2.082.0, running on Ubuntu 16.04.

By the way, your example.d shows a mixin Main;, but I've omitted that since it doesn't seem to be needed to bring a main in. In fact, adding it causes a build failure due to Error: only one main allowed.

[linkrope]

You have to run unit_main from dunit.framework. There are, however, several ways to do this:

• put the call unit_main(args); in your main function
• use version (unittest) ... else ... to select either mixin Main; or your own main function
• use different dub "configurations" for your executable and for the test runner (move the test-runner main for example from source to unittest/main.d and specify it explicitly as "mainSourceFile")

[vsajip]

Thanks. I figured it out and used the first option.