You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
174 lines
4.6 KiB
174 lines
4.6 KiB
'use strict'
|
|
|
|
var tap = require('tap')
|
|
var test = tap.test
|
|
var sinon = require('sinon')
|
|
var shimmer = require('../index.js')
|
|
|
|
var outsider = 0
|
|
function counter () { return ++outsider }
|
|
function anticounter () { return --outsider }
|
|
|
|
var generator = {
|
|
inc: counter,
|
|
dec: anticounter
|
|
}
|
|
|
|
var arrow = {
|
|
in: counter,
|
|
out: anticounter
|
|
}
|
|
|
|
var nester = {
|
|
in: counter,
|
|
out: anticounter
|
|
}
|
|
|
|
test('should wrap multiple functions safely', function (t) {
|
|
t.plan(9)
|
|
|
|
t.equal(counter, generator.inc, 'basic function equality testing should work')
|
|
t.equal(anticounter, generator.dec, 'basic function equality testing should work')
|
|
t.doesNotThrow(function () { generator.inc() })
|
|
t.doesNotThrow(function () { generator.dec() })
|
|
t.equal(0, outsider, 'calls have side effects')
|
|
|
|
var count = 0
|
|
function wrapper (original) {
|
|
return function () {
|
|
count++
|
|
var returned = original.apply(this, arguments)
|
|
count++
|
|
return returned
|
|
}
|
|
}
|
|
shimmer.massWrap(generator, ['inc', 'dec'], wrapper)
|
|
|
|
t.doesNotThrow(function () { generator.inc() })
|
|
t.doesNotThrow(function () { generator.dec() })
|
|
t.equal(4, count, 'both pre and post increments should have happened')
|
|
t.equal(0, outsider, 'original function has still been called')
|
|
})
|
|
|
|
test('should wrap multiple functions on multiple modules safely', function (t) {
|
|
t.plan(15)
|
|
|
|
t.equal(counter, arrow.in, 'basic function equality testing should work')
|
|
t.equal(counter, nester.in, 'basic function equality testing should work')
|
|
t.equal(anticounter, arrow.out, 'basic function equality testing should work')
|
|
t.equal(anticounter, nester.out, 'basic function equality testing should work')
|
|
|
|
t.doesNotThrow(function () { arrow.in() })
|
|
t.doesNotThrow(function () { nester.in() })
|
|
t.doesNotThrow(function () { arrow.out() })
|
|
t.doesNotThrow(function () { nester.out() })
|
|
|
|
t.equal(0, outsider, 'calls have side effects')
|
|
|
|
var count = 0
|
|
function wrapper (original) {
|
|
return function () {
|
|
count++
|
|
var returned = original.apply(this, arguments)
|
|
count++
|
|
return returned
|
|
}
|
|
}
|
|
shimmer.massWrap([arrow, nester], ['in', 'out'], wrapper)
|
|
|
|
t.doesNotThrow(function () { arrow.in() })
|
|
t.doesNotThrow(function () { arrow.out() })
|
|
t.doesNotThrow(function () { nester.in() })
|
|
t.doesNotThrow(function () { nester.out() })
|
|
|
|
t.equal(8, count, 'both pre and post increments should have happened')
|
|
t.equal(0, outsider, 'original function has still been called')
|
|
})
|
|
|
|
test('wrap called with no arguments', function (t) {
|
|
t.plan(2)
|
|
|
|
var mock = sinon.expectation
|
|
.create('logger')
|
|
.twice()
|
|
shimmer({ logger: mock })
|
|
|
|
t.doesNotThrow(function () {
|
|
shimmer.massWrap()
|
|
}, "wrapping with no arguments doesn't throw")
|
|
|
|
t.doesNotThrow(function () {
|
|
mock.verify()
|
|
}, 'logger was called with the expected message')
|
|
})
|
|
|
|
test('wrap called with module but nothing else', function (t) {
|
|
t.plan(2)
|
|
|
|
var mock = sinon.expectation
|
|
.create('logger')
|
|
.withExactArgs('must provide one or more functions to wrap on modules')
|
|
.once()
|
|
shimmer({ logger: mock })
|
|
|
|
t.doesNotThrow(function () {
|
|
shimmer.massWrap(generator)
|
|
}, "wrapping with only 1 argument doesn't throw")
|
|
|
|
t.doesNotThrow(function () {
|
|
mock.verify()
|
|
}, 'logger was called with the expected message')
|
|
})
|
|
|
|
test('wrap called with original but no wrapper', function (t) {
|
|
t.plan(2)
|
|
|
|
var mock = sinon.expectation
|
|
.create('logger')
|
|
.twice()
|
|
shimmer({ logger: mock })
|
|
|
|
t.doesNotThrow(function () {
|
|
shimmer.massWrap(generator, ['inc'])
|
|
}, "wrapping with only original function doesn't throw")
|
|
|
|
t.doesNotThrow(function () {
|
|
mock.verify()
|
|
}, 'logger was called with the expected message')
|
|
})
|
|
|
|
test('wrap called with non-function original', function (t) {
|
|
t.plan(2)
|
|
|
|
var mock = sinon.expectation
|
|
.create('logger')
|
|
.withExactArgs('must provide one or more functions to wrap on modules')
|
|
.once()
|
|
shimmer({ logger: mock })
|
|
|
|
t.doesNotThrow(function () {
|
|
shimmer.massWrap({ orange: 'slices' }, 'orange', function () {})
|
|
}, "wrapping non-function original doesn't throw")
|
|
|
|
t.doesNotThrow(function () {
|
|
mock.verify()
|
|
}, 'logger was called with the expected message')
|
|
})
|
|
|
|
test('wrap called with non-function wrapper', function (t) {
|
|
t.plan(2)
|
|
|
|
var mock = sinon.expectation
|
|
.create('logger')
|
|
.withArgs('must provide one or more functions to wrap on modules')
|
|
.once()
|
|
shimmer({ logger: mock })
|
|
|
|
t.doesNotThrow(function () {
|
|
shimmer.massWrap({ orange: function () {} }, 'orange', 'hamchunx')
|
|
}, "wrapping with non-function wrapper doesn't throw")
|
|
|
|
t.doesNotThrow(function () {
|
|
mock.verify()
|
|
}, 'logger was called with the expected message')
|
|
})
|
|
|