@tapjs/before

A default tap plugin providing t.before().

USAGE

This plugin is installed with tap by default. If you had previously removed it, you can tap plugin add @tapjs/before to bring it back.

import t from 'tap'
t.before(() => {
  // this will run before the tests in this file start
})

If the method returns a promise, it will be awaited before moving on to the next test.

A t.before() method will run prior to any subsequent child tests. If it's called before any child tests have started, then it will be run right away.

So, this test:

import t from 'tap'

t.before(() => {
  console.error('before initial')
})

t.test('first test', t => {
  t.before(async () => {
    // this will wait before moving on
    await new Promise(res => setTimeout(res, 100))
    console.error('before in first test')
  })
  console.error('in first test')
  t.test('child test', (t) => {
    console.error('child of first test')
    t.end()
  })
  t.end()
})

t.before(() => {
  console.error('before between')
})

t.test('second test', t => {
  console.error('in second test')
  t.end()
})

will print:

before initial
in first test
before in first test
child of first test
before between
in second test

Essentially, t.before() is a bit like a child test method that doesn't get a Test object as an argument.

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