Tape is een minimalistisch test-harness voor JavaScript en Node.js dat standaard TAP-uitvoer (Test Anything Protocol) produceert.
Testvoorbeeld en uitvoeringsplan (t.plan)
const test = require('tape')
test('basic mathematical operations', (t) => {
t.plan(2)
t.equal(1 + 1, 2, 'addition should compute sum')
t.notEqual(2 * 3, 5, 'multiplication should not equal five')
})
Overzicht van beweringen (Assertion Methods)
test('assertion reference', (t) => {
t.plan(10)
t.equal(actual, expected, 'values are equal (===)')
t.notEqual(actual, expected, 'values are not equal')
t.deepEqual(actual, expected, 'equivalent objects using deepEqual')
t.notDeepEqual(actual, expected, 'objects are not deeply equal')
t.looseEqual(actual, expected, 'values are loose equal (==)')
t.notLooseEqual(actual, expected, 'values are not loose equal')
t.ok(value, 'value is truthy')
t.notOk(value, 'value is falsy')
t.error(err, 'error argument is falsy')
t.throws(fn, /ExpectedError/, 'function throws matching error')
t.doesNotThrow(fn, 'function runs without throwing')
})
Levenscyclusbeheer van tests (Lifecycle)
test('lifecycle control', (t) => {
t.comment('informational log message')
t.pass('explicit pass')
t.fail('explicit failure')
t.timeoutAfter(2000)
t.skip('skipped assertion')
t.end(err) // end test asynchronously
})
test.only('run only this focused test', (t) => {
t.plan(1)
t.ok(true)
})