338 lines
11 KiB
JavaScript
338 lines
11 KiB
JavaScript
/* eslint-disable global-require, no-bitwise, no-process-exit */
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"use strict"
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;(function(m) {
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if (typeof module !== "undefined") module["exports"] = m()
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else window.o = m()
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})(function init(name) {
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var spec = {}, subjects = [], results, only = null, ctx = spec, start, stack = 0, nextTickish, hasProcess = typeof process === "object", hasOwn = ({}).hasOwnProperty
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var ospecFileName = getStackName(ensureStackTrace(new Error), /[\/\\](.*?):\d+:\d+/), timeoutStackName
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var globalTimeout = noTimeoutRightNow
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if (name != null) spec[name] = ctx = {}
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function o(subject, predicate) {
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if (predicate === undefined) {
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if (results == null) throw new Error("Assertions should not occur outside test definitions")
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return new Assert(subject)
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}
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else if (results == null) {
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ctx[unique(subject)] = new Task(predicate, ensureStackTrace(new Error))
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} else {
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throw new Error("Test definition shouldn't be nested. To group tests use `o.spec()`")
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}
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}
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o.before = hook("__before")
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o.after = hook("__after")
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o.beforeEach = hook("__beforeEach")
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o.afterEach = hook("__afterEach")
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o.new = init
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o.spec = function(subject, predicate) {
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var parent = ctx
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ctx = ctx[unique(subject)] = {}
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predicate()
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ctx = parent
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}
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o.only = function(subject, predicate, silent) {
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if (!silent) {
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console.log(highlight("/!\\ WARNING /!\\ o.only() mode"))
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try {throw new Error} catch (e) {
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console.log(o.cleanStackTrace(e) + "\n")
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}
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}
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o(subject, only = predicate)
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}
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o.spy = function(fn) {
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var spy = function() {
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spy.this = this
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spy.args = [].slice.call(arguments)
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spy.callCount++
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if (fn) return fn.apply(this, arguments)
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}
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if (fn)
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Object.defineProperties(spy, {
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length: {value: fn.length},
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name: {value: fn.name}
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})
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spy.args = []
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spy.callCount = 0
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return spy
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}
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o.cleanStackTrace = function(error) {
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// For IE 10+ in quirks mode, and IE 9- in any mode, errors don't have a stack
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if (error.stack == null) return ""
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var i = 0, header = error.message ? error.name + ": " + error.message : error.name, stack
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// some environments add the name and message to the stack trace
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if (error.stack.indexOf(header) === 0) {
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stack = error.stack.slice(header.length).split(/\r?\n/)
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stack.shift() // drop the initial empty string
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} else {
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stack = error.stack.split(/\r?\n/)
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}
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if (ospecFileName == null) return stack.join("\n")
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// skip ospec-related entries on the stack
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while (stack[i] != null && stack[i].indexOf(ospecFileName) !== -1) i++
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// now we're in user code (or past the stack end)
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return stack[i]
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}
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o.timeout = function(n) {
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globalTimeout(n)
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}
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o.run = function(reporter) {
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results = []
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start = new Date
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test(spec, [], [], new Task(function() {
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setTimeout(function () {
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timeoutStackName = getStackName({stack: o.cleanStackTrace(ensureStackTrace(new Error))}, /([\w \.]+?:\d+:\d+)/)
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if (typeof reporter === "function") reporter(results)
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else {
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var errCount = o.report(results)
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if (hasProcess && errCount !== 0) process.exit(1)
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}
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})
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}, null))
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function test(spec, pre, post, finalize) {
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pre = [].concat(pre, spec["__beforeEach"] || [])
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post = [].concat(spec["__afterEach"] || [], post)
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series([].concat(spec["__before"] || [], Object.keys(spec).map(function(key) {
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return new Task(function(done, timeout) {
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timeout(Infinity)
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if (key.slice(0, 2) === "__") return done()
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if (only !== null && spec[key].fn !== only && spec[key] instanceof Task) return done()
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subjects.push(key)
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var pop = new Task(function pop() {
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subjects.pop()
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done()
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}, null)
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if (spec[key] instanceof Task) series([].concat(pre, spec[key], post, pop))
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else test(spec[key], pre, post, pop)
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}, null)
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}), spec["__after"] || [], finalize))
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}
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function series(tasks) {
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var cursor = 0
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next()
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function next() {
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if (cursor === tasks.length) return
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var task = tasks[cursor++]
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var current = cursor
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var fn = task.fn
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var timeout = 0, delay = 200, s = new Date
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var arg
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globalTimeout = setDelay
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var isDone = false
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// public API, may only be called once from use code (or after returned Promise resolution)
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function done(err) {
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if (!isDone) isDone = true
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else throw new Error("`" + arg + "()` should only be called once")
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if (timeout === undefined) console.warn("# elapsed: " + Math.round(new Date - s) + "ms, expected under " + delay + "ms\n" + o.cleanStackTrace(task.err))
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finalizeAsync(err)
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}
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// for internal use only
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function finalizeAsync(err) {
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if (err) {
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if (err instanceof Error) record(err.message, err, task.err)
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else record(String(err), null, task.err)
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}
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if (timeout !== undefined) timeout = clearTimeout(timeout)
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if (current === cursor) next()
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}
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function startTimer() {
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timeout = setTimeout(function() {
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timeout = undefined
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finalizeAsync("async test timed out")
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}, Math.min(delay, 2147483647))
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}
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function setDelay (t) {delay = t}
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if (fn.length > 0) {
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var body = fn.toString()
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arg = (body.match(/\(([\w$]+)/) || body.match(/([\w$]+)\s*=>/) || []).pop()
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if (body.indexOf(arg) === body.lastIndexOf(arg)) throw new Error("`" + arg + "()` should be called at least once")
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try {
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fn(done, setDelay)
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}
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catch (e) {
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finalizeAsync(e)
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}
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if (timeout === 0) {
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startTimer()
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}
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} else {
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var p = fn()
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if (p && p.then) {
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startTimer()
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p.then(function() { done() }, done)
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} else {
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nextTickish(next)
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}
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}
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globalTimeout = noTimeoutRightNow
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}
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}
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}
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function unique(subject) {
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if (hasOwn.call(ctx, subject)) {
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console.warn("A test or a spec named `" + subject + "` was already defined")
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while (hasOwn.call(ctx, subject)) subject += "*"
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}
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return subject
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}
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function hook(name) {
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return function(predicate) {
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if (ctx[name]) throw new Error("This hook should be defined outside of a loop or inside a nested test group:\n" + predicate)
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ctx[name] = new Task(predicate, ensureStackTrace(new Error))
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}
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}
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define("equals", "should equal", function(a, b) {return a === b})
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define("notEquals", "should not equal", function(a, b) {return a !== b})
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define("deepEquals", "should deep equal", deepEqual)
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define("notDeepEquals", "should not deep equal", function(a, b) {return !deepEqual(a, b)})
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function isArguments(a) {
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if ("callee" in a) {
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for (var i in a) if (i === "callee") return false
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return true
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}
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}
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function deepEqual(a, b) {
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if (a === b) return true
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if (a === null ^ b === null || a === undefined ^ b === undefined) return false
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if (typeof a === "object" && typeof b === "object") {
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var aIsArgs = isArguments(a), bIsArgs = isArguments(b)
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if (a.constructor === Object && b.constructor === Object && !aIsArgs && !bIsArgs) {
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for (var i in a) {
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if ((!(i in b)) || !deepEqual(a[i], b[i])) return false
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}
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for (var i in b) {
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if (!(i in a)) return false
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}
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return true
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}
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if (a.length === b.length && (a instanceof Array && b instanceof Array || aIsArgs && bIsArgs)) {
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var aKeys = Object.getOwnPropertyNames(a), bKeys = Object.getOwnPropertyNames(b)
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if (aKeys.length !== bKeys.length) return false
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for (var i = 0; i < aKeys.length; i++) {
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if (!hasOwn.call(b, aKeys[i]) || !deepEqual(a[aKeys[i]], b[aKeys[i]])) return false
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}
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return true
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}
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if (a instanceof Date && b instanceof Date) return a.getTime() === b.getTime()
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if (typeof Buffer === "function" && a instanceof Buffer && b instanceof Buffer) {
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for (var i = 0; i < a.length; i++) {
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if (a[i] !== b[i]) return false
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}
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return true
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}
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if (a.valueOf() === b.valueOf()) return true
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}
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return false
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}
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function Assert(value) {this.value = value}
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function Task(fn, err) {this.fn = fn, this.err = err}
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function define(name, verb, compare) {
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Assert.prototype[name] = function assert(value) {
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if (compare(this.value, value)) record(null)
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else record(serialize(this.value) + "\n " + verb + "\n" + serialize(value))
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return function(message) {
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var result = results[results.length - 1]
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result.message = message + "\n\n" + result.message
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}
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}
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}
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function record(message, error, fallbackError) {
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var result = {pass: message === null}
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if (result.pass === false) {
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result.context = subjects.join(" > ")
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result.message = message
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result.error = error != null ? error : ensureStackTrace(new Error)
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result.fallbackError = fallbackError
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}
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results.push(result)
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}
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function serialize(value) {
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if (hasProcess) return require("util").inspect(value)
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if (value === null || (typeof value === "object" && !(value instanceof Array)) || typeof value === "number") return String(value)
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else if (typeof value === "function") return value.name || "<anonymous function>"
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try {return JSON.stringify(value)} catch (e) {return String(value)}
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}
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function noTimeoutRightNow() {
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throw new Error("o.timeout must be called snchronously from within a test definition or a hook")
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}
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var colorCodes = {
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red: "31m",
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red2: "31;1m",
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green: "32;1m"
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}
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function highlight(message, color) {
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var code = colorCodes[color] || colorCodes.red;
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return hasProcess ? (process.stdout.isTTY ? "\x1b[" + code + message + "\x1b[0m" : message) : "%c" + message + "%c "
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}
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function cStyle(color, bold) {
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return hasProcess||!color ? "" : "color:"+color+(bold ? ";font-weight:bold" : "")
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}
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function ensureStackTrace(error) {
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// mandatory to get a stack in IE 10 and 11 (and maybe other envs?)
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if (error.stack === undefined) try { throw error } catch(e) {return e}
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else return error
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}
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function getStackName(e, exp) {
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return e.stack && exp.test(e.stack) ? e.stack.match(exp)[1] : null
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}
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o.report = function (results) {
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var errCount = 0
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for (var i = 0, r; r = results[i]; i++) {
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if (!r.pass) {
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var stackTrace = o.cleanStackTrace(r.error)
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var couldHaveABetterStackTrace = !stackTrace || timeoutStackName != null && stackTrace.indexOf(timeoutStackName) !== -1
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if (couldHaveABetterStackTrace) stackTrace = r.fallbackError != null ? o.cleanStackTrace(r.fallbackError) : r.error.stack || ""
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console.error(
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(hasProcess ? "\n" : "") +
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highlight(r.context + ":", "red2") + "\n" +
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highlight(r.message, "red") +
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(stackTrace ? "\n" + stackTrace + "\n" : ""),
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cStyle("black", true), "", // reset to default
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cStyle("red"), cStyle("black")
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)
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errCount++
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}
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}
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var pl = results.length === 1 ? "" : "s"
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var resultSummary = (errCount === 0) ?
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highlight((pl ? "All " : "The ") + results.length + " assertion" + pl + " passed", "green"):
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highlight(errCount + " out of " + results.length + " assertion" + pl + " failed", "red2")
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var runningTime = " in " + Math.round(Date.now() - start) + "ms"
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console.log(
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(hasProcess ? "––––––\n" : "") +
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(name ? name + ": " : "") + resultSummary + runningTime,
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cStyle((errCount === 0 ? "green" : "red"), true), ""
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)
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return errCount
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}
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if (hasProcess) {
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nextTickish = process.nextTick
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} else {
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nextTickish = function fakeFastNextTick(next) {
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if (stack++ < 5000) next()
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else setTimeout(next, stack = 0)
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}
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}
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return o
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})
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