I'm a Perl dev working with a multi-language project, including python, node.js and C. Thankfully all of these languages have TAP producer libraries. For example, I can use the mocha command to run Node.js scripts and get TAP output.
However, how do I integrate this with the prove tool? For perl, I generally put tests in t/ and prove -vlc t/ will run all .t files inside as perl scripts. The only thing I can think of is to exec a mocha command within a perl .t file.
The most direct way I can think of to use TAP as a common unit test reporting format in a multi-language project is to write a few scripts in your t/ directory that call TAP-producing unit test drivers.
Mocha has a TAP reporting plugin called mocha-tap-reporter and invoking it from the command line is just
mocha --reporter mocha-tap-reporter <directory>
Here's an example of how might set things up in a simple project
.
├── node_modules
(contents of node_modules omitted)
├── package-lock.json
├── package.json
├── t
│ └── mocha.t
└── test
└── multiply.js
In this case, multiply.js uses the assert helper and just has one test:
const assert = require('assert');
describe('multiply', function () {
it('1 * 0 = 0', function () {
assert.equal(1 * 0, 0);
});
});
mocha.t is just a shell wrapper around mocha --reporter mocha-tap-reporter test.
#!/bin/bash
# change directory to folder containing source file
cd "$(dirname "${BASH_SOURCE[0]}")"
# go to project root
cd ..
# invoke mocha test runner with tap reporter
./node_modules/.bin/mocha \
--reporter mocha-tap-reporter \
test
And then if you run prove from the project root, you'll see this:
% prove
t/mocha.t .. ok
All tests successful.
Files=1, Tests=1, 0 wallclock secs ( 0.02 usr 0.01 sys + 0.23 cusr 0.08 csys = 0.34 CPU)
Result: PASS
That being said, the mocha-tap-reporter plugin hasn't been updated in three years or so and looks a little unmaintained. I think that's the general situation for TAP libraries outside of the Perl community, though (having used one in an OCaml project a while back).