I was getting a weird error in Node, it would exit randomly, I could not figure it out. There was no error or stack trace. I could not step into the line with the debugger.
I thought maybe the test runner was doing something strange. So I quickly mocked out the test runner, at least the bits I use.
It ended up being unrelated to the test runner, but I wanted to record this as its a nice simple async test runner.
| let tape = { | |
| i: 0 | |
| ,tests: [] | |
| } | |
| function test(name, visitor){ | |
| tape.tests.push({ name, visitor }) | |
| } | |
| Promise.resolve().then( async () => { | |
| let id = setTimeout(() => {}) | |
| let ended = false | |
| let failures = [] | |
| const t = { | |
| equals(a,b, assertion=''){ | |
| let message = | |
| (a == b ? 'ok ' : 'not ok') | |
| + ++tape.i | |
| + ' ' + assertion | |
| if( a != b) failures.push({ assertion, a, b }) | |
| // eslint-disable-next-line no-undef | |
| console.error(message) | |
| } | |
| ,doesNotThrow(f, assertion){ | |
| let threw; | |
| try { | |
| f() | |
| } catch (e) { | |
| threw = e | |
| console.error(e) | |
| } | |
| let message = | |
| (!threw ? 'ok ' : 'not ok') | |
| + ++tape.i | |
| + ' ' + assertion | |
| if( threw ) failures.push({ assertion, threw }) | |
| console.error(message) | |
| } | |
| ,end(){ | |
| ended = true | |
| } | |
| } | |
| t.equal = t.equals | |
| for( let test of tape.tests ) { | |
| ended = false | |
| console.error('# ' + test.name) | |
| await test.visitor(t) | |
| if( !ended ) { | |
| throw new Error('Test exited without ending') | |
| } | |
| } | |
| if( failures.length ) { | |
| process.exit(1) | |
| } | |
| clearTimeout(id) | |
| }) |