tap-parser

parse the test anything protocol



example

`` js
var parser = require('tap-parser');
var p = parser(function (results) {
console.dir(results);
});

process.stdin.pipe(p);
`

given some TAP-formatted input:

`
$ node test.js
TAP version 13


beep

ok 1 should be equal
ok 2 should be equivalent

boop

ok 3 should be equal
ok 4 (unnamed assert)

1..4

tests 4

pass 4

ok

`

parse the output:

`
$ node test.js | node parse.js
{ ok: true,
asserts:
[ { ok: true, number: 1, name: 'should be equal' },
{ ok: true, number: 2, name: 'should be equivalent' },
{ ok: true, number: 3, name: 'should be equal' },
{ ok: true, number: 4, name: '(unnamed assert)' } ],
pass:
[ { ok: true, number: 1, name: 'should be equal' },
{ ok: true, number: 2, name: 'should be equivalent' },
{ ok: true, number: 3, name: 'should be equal' },
{ ok: true, number: 4, name: '(unnamed assert)' } ],
fail: [],
todo: [],
errors: [],
diags: [],
plan: { start: 1, end: 4 } }
`

usage

This package also has a tap-parser command.

`
usage: tap-parser OPTIONS

Parse TAP from INPUT. If there are any failures, exits with
a non-zero status code.

OPTIONS are:

-i, --input Read from INPUT. Default: stdin.
-o, --output Write to OUTPUT. Default: stdout.
-r, --results Print results as json. Otherwise pass INPUT
through to OUTPUT.

-h, --help Show this help message.
-v, --version Print the current version of tap-parser.

`

methods

` js
var parser = require('tap-parser')
`

var p = parser(cb)

Return a writable stream p that emits parse events.

If cb is given it will listen for the 'results' event.

events

p.on('results', function (results) {})

results.errors is an array containing any parse errors, such as out of order
assertions or missing plans.

p.on('assert', function (assert) {})

Every /^(not )?ok\b/ line will emit an 'assert' event.

Every assert object has these keys:

* assert.ok - true if the assertion succeeded, false if failed
* assert.number - the assertion number
* assert.name - optional short description of the assertion

and may also have

* assert.todo - optional description of why the assertion failure is
not a problem.

When results are returned, each assert object will have been
appended to the list asserts and one of (pass, fail, todo).

p.on('comment', function (comment) {})

Every /^# (.+)/ line will emit the string contents of comment.

p.on('plan', function (plan) {})

Every /^\d+\.\.\d+/ line emits a 'plan' event for the test numbers
plan.start through plan.end, inclusive.

If the test is completely skipped the result will look like

`
{ ok: true,
asserts: [],
pass: [],
fail: [],
errors: [],
diags: [],
plan:
{ start: 1,
end: 0,
skip_all: true,
skip_reason: 'This code has no seat belt' } }
`

p.on('version', function (version) {})

A /^TAP version (\d+)/ line emits a 'version' event with a version number or
string.

p.on('diag', function (diag, text) {})

Any lines between /^\s+--- and /^\s... are parsed as YAML and returned as
a diagnostic JSON object, meant to provide extra info about the previous assert.

A plaintext version of the message is also available as the second arg.

After the event is emitted, the diag object will be attached to the associated assert.

If there is no assert to associate a diag with, an error will occur.

p.on('extra', function (extra) {})

All other lines will trigger an 'extra' event with the line text.

install

With npm do:

`
npm install tap-parser
`

You can use browserify to require('tap-parser')` in
the browser.

license

MIT