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| var synonyms = require('./synonyms.js')
// TODO: use 'deeper' module?
var deepEqual = require('deep-equal')
var bufferEqual = require('buffer-equal')
// Load Buffer the old way for browserify's sake
var Buffer = require('buffer').Buffer
// this is actually the "working half" of the Test class.
// each method figures out if it's a pass or fail, and decorates
// the extra bit, and then calls either pass() or fail() or some
// other assert method.
//
// typically, a plugin would do this on a specific instance, eg on
// the root test harness instance. but we do this here to add some
// useful prototype methods.
exports.decorate = decorate
function decorate (t) {
t.addAssert('ok', 1, function (obj, message, extra) {
message = message || 'expect truthy value'
Eif (obj)
return this.pass(message, extra)
return this.fail(message, extra)
})
t.addAssert('notOk', 1, function (obj, message, extra) {
message = message || 'expect falsey value'
return this.ok(!obj, message, extra)
})
t.addAssert('error', 1, function (er, message, extra) {
if (!er)
return this.pass(message || 'should not error', extra)
if (!(er instanceof Error)) {
extra.found = er
return this.fail(message || 'non-Error error encountered', extra)
}
message = message || er.message
extra.found = er
return this.fail(message, extra)
})
t.addAssert('equal', 2, function (f, w, m, e) {
m = m || 'should be equal'
Eif (f === w)
return this.pass(m, e)
e.found = f
e.wanted = w
e.compare = '==='
if (typeof f === 'object' &&
typeof w === 'object' &&
f &&
w &&
deepEqual(f, w))
e.note = 'Objects never === one another'
return this.fail(m, e)
})
t.addAssert('not', 2, function (f, w, m, e) {
m = m || 'should not be equal'
Eif (f !== w)
return this.pass(m, e)
e.found = f
e.doNotWant = w
e.compare = '!=='
return this.fail(m, e)
})
t.addAssert('same', 2, function (f, w, m, e) {
m = m || 'should be equivalent'
e.found = f
e.wanted = w
return this.ok(equivalent(f, w, false), m, e)
})
t.addAssert('notSame', 2, function (f, w, m, e) {
m = m || 'should not be equivalent'
e.found = f
e.doNotWant = w
return this.notOk(equivalent(f, w, false), m, e)
})
t.addAssert('strictSame', 2, function (f, w, m, e) {
m = m || 'should be equivalent strictly'
e.found = f
e.wanted = w
return this.ok(equivalent(f, w, true), m, e)
})
t.addAssert('strictNotSame', 2, function (f, w, m, e) {
m = m || 'should be equivalent strictly'
e.found = f
e.doNotWant = w
return this.notOk(equivalent(f, w, true), m, e)
})
t.addAssert('match', 2, function (f, w, m, e) {
m = m || 'should match pattern provided'
e.found = f
e.pattern = w
return this.ok(match(f, w, e, false), m, e)
})
t.addAssert('notMatch', 2, function (f, w, m, e) {
m = m || 'should not match pattern provided'
e.found = f
e.pattern = w
return this.ok(match(f, w, e, true), m, e)
})
t.addAssert('type', 2, function (obj, klass, m, e) {
var name = klass
Iif (typeof name === 'function')
name = name.name || '(anonymous constructor)'
m = m || 'type is ' + name
// simplest case, it literally is the same thing
Iif (obj === klass)
return this.pass(m, e)
var type = typeof obj
Iif (!obj && type === 'object')
type = 'null'
Iif (type === 'object' && klass !== 'object') {
if (typeof klass === 'function') {
e.found = Object.getPrototypeOf(obj).constructor.name
e.wanted = name
return this.ok(obj instanceof klass, m, e)
}
// check prototype chain for name
// at this point, we already know klass is not a function
// if the klass specified is an obj in the proto chain, pass
// if the name specified is the name of a ctor in the chain, pass
var p = obj
do {
var ctor = p.constructor && p.constructor.name
if (p === klass || ctor === name)
return this.pass(m, e)
} while (p = Object.getPrototypeOf(p))
}
return this.equal(type, name, m, e)
})
t.addAssert('throws', 4, function (fn_, wanted_, m_, e_, m, e__) {
var fn, wanted, e
for (var i = 0; i < arguments.length - 1; i++) {
var arg = arguments[i]
if (typeof arg === 'function')
fn = arg
else if (typeof arg === 'string' && arg)
m = arg
else if (typeof arg === 'object') {
if (!wanted)
wanted = arg
else
e = arg
}
}
for (var i in e__) {
e[i] = e__[i]
}
m = m || 'expected to throw'
if (wanted) {
if (wanted instanceof Error) {
var w = {
message: wanted.message
}
if (wanted.name)
w.name = wanted.name
for (var i in wanted) {
w[i] = wanted[i]
}
wanted = w
m += ': ' + (wanted.name || 'Error') + ' ' + wanted.message
e = e || {}
if (e !== wanted)
e.wanted = wanted
} else if (typeof wanted === 'string') {
wanted = {
message: wanted
}
}
}
if (typeof fn !== 'function') {
e = e || {}
e.todo = true
return this.pass(m, e)
}
try {
fn()
return this.fail(m, e)
} catch (er) {
// 'name' is a getter.
if (er.name)
er.name = er.name + ''
if (wanted)
return this.has(er, wanted, m, e)
else
return this.pass(m, e)
}
})
t.addAssert('doesNotThrow', 1, function (fn, m, e) {
if (typeof fn === 'string') {
var x = fn
fn = m
m = x
}
m = m || 'expected to not throw'
if (typeof fn !== 'function') {
e.todo = true
return this.pass(m, e)
}
try {
fn()
return this.pass(m, e)
} catch (er) {
return this.fail(m, this._extraFromError(er, e))
}
})
// synonyms are helpful.
Object.keys(synonyms).forEach(function (c) {
Eif (t[c]) {
synonyms[c].forEach(function (s) {
Object.defineProperty(t, s, {
value: t[c],
enumerable: false,
configurable: true,
writable: true
})
})
}
})
}
// TODO: this "partial deep equal" logic should be a module.
function selectFields (a, b) {
// get the values in A of the fields in B
var ret = Array.isArray(b) ? [] : {}
Object.keys(b).forEach(function (k) {
if (!hasOwn(a, k)) return
var v = b[k]
, av = a[k]
if (v && av && typeof v === "object" && typeof av === "object"
&& !(Buffer.isBuffer(v))
&& !(v instanceof Date)
&& !(v instanceof RegExp)
&& !(v instanceof String)
&& !(v instanceof Boolean)
&& !(v instanceof Number)
&& !(Array.isArray(v))) {
ret[k] = selectFields(av, v)
} else
ret[k] = av
})
return ret
}
function match (f, w, e, flip) {
if (Object.prototype.toString.call(w) === '[object RegExp]' &&
typeof f === 'string') {
var match = f.match(w)
e.match = match
var ok = !!match
return !flip === ok
}
var eq
if (f && typeof f === 'object' && typeof w === 'object')
eq = equivalent(selectFields(f, w), w, false)
else
eq = f === w
return eq === !flip
}
function equivalent (f, w, strict) {
Iif (Buffer.isBuffer(f) && Buffer.isBuffer(w))
return bufferEqual(f, w)
else
return deepEqual(f, w, { strict: strict })
}
function hasOwn (obj, key) {
return Object.hasOwnProperty.call(obj, key)
}
|