/
adapter.js
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/
adapter.js
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/* eslint no-unused-vars: ["error", { "varsIgnorePattern": "(createSpecFilter|createStartFn)" }] */
'use strict'
// Save link to native Date object
// before it might be mocked by the user
var _Date = Date
/**
* Decision maker for whether a stack entry is considered external to jasmine and karma.
* @param {String} entry Error stack entry.
* @return {Boolean} True if external, False otherwise.
*/
function isExternalStackEntry (entry) {
return !!entry &&
// entries related to jasmine and karma-jasmine:
!/\/(jasmine-core|karma-jasmine)\//.test(entry) &&
// karma specifics, e.g. "at http://localhost:7018/karma.js:185"
!/\/(karma.js|context.html):/.test(entry)
}
/**
* Returns relevant stack entries.
* @param {Array} stack frames
* @return {Array} A list of relevant stack entries.
*/
function getRelevantStackFrom (stack) {
var filteredStack = []
var relevantStack = []
for (var i = 0; i < stack.length; i += 1) {
if (isExternalStackEntry(stack[i])) {
filteredStack.push(stack[i])
}
}
// If the filtered stack is empty, i.e. the error originated entirely from within jasmine or karma, then the whole stack
// should be relevant.
if (filteredStack.length === 0) {
filteredStack = stack
}
for (i = 0; i < filteredStack.length; i += 1) {
if (filteredStack[i]) {
relevantStack.push(filteredStack[i])
}
}
return relevantStack
}
/**
* Custom formatter for a failed step.
*
* Different browsers report stack trace in different ways. This function
* attempts to provide a concise, relevant error message by removing the
* unnecessary stack traces coming from the testing framework itself as well
* as possible repetition.
*
* @see https://github.com/karma-runner/karma-jasmine/issues/60
* @param {Object} step Step object with stack and message properties.
* @return {String} Formatted step.
*/
function formatFailedStep (step) {
var relevantMessage = []
var relevantStack = []
// Safari/Firefox seems to have no stack trace,
// so we just return the error message and if available
// construct a stacktrace out of filename and lineno:
if (!step.stack) {
if (step.filename) {
var stackframe = step.filename
if (step.lineno) {
stackframe = stackframe + ':' + step.lineno
}
relevantStack.push(stackframe)
}
relevantMessage.push(step.message)
return relevantMessage.concat(relevantStack).join('\n')
}
// Remove the message prior to processing the stack to prevent issues like
// https://github.com/karma-runner/karma-jasmine/issues/79
var stackframes = step.stack.split('\n')
var messageOnStack = null
if (stackframes[0].indexOf(step.message) !== -1) {
// Remove the message if it is in the stack string (eg Chrome)
messageOnStack = stackframes.shift()
}
// Filter frames
var relevantStackFrames = getRelevantStackFrom(stackframes)
if (messageOnStack) {
// Put the message back if we removed it.
relevantStackFrames.unshift(messageOnStack)
} else {
// The stack did not have the step.message so add it.
relevantStackFrames.unshift(step.message)
}
return relevantStackFrames.join('\n')
}
function debugUrl (description) {
// A link to re-run just one failed test case.
return window.location.origin + '/debug.html?spec=' + encodeURIComponent(description)
}
function SuiteNode (name, parent) {
this.name = name
this.parent = parent
this.children = []
this.addChild = function (name) {
var suite = new SuiteNode(name, this)
this.children.push(suite)
return suite
}
}
function processSuite (suite, pointer) {
var child
var childPointer
for (var i = 0; i < suite.children.length; i++) {
child = suite.children[i]
if (child.children) {
childPointer = pointer[child.description] = { _: [] }
processSuite(child, childPointer)
} else {
if (!pointer._) {
pointer._ = []
}
pointer._.push(child.description)
}
}
}
function getAllSpecNames (topSuite) {
var specNames = {}
processSuite(topSuite, specNames)
return specNames
}
/**
* Very simple reporter for Jasmine.
*/
function KarmaReporter (tc, jasmineEnv) {
var currentSuite = new SuiteNode()
var startTimeCurrentSpec = new _Date().getTime()
function handleGlobalErrors (result) {
if (result.failedExpectations && result.failedExpectations.length) {
var message = 'An error was thrown in afterAll'
var steps = result.failedExpectations
for (var i = 0, l = steps.length; i < l; i++) {
message += '\n' + formatFailedStep(steps[i])
}
tc.error(message)
}
}
/**
* Jasmine 2.0 dispatches the following events:
*
* - jasmineStarted
* - jasmineDone
* - suiteStarted
* - suiteDone
* - specStarted
* - specDone
*/
this.jasmineStarted = function (data) {
// TODO(vojta): Do not send spec names when polling.
tc.info({
event: 'jasmineStarted',
total: data.totalSpecsDefined,
specs: getAllSpecNames(jasmineEnv.topSuite())
})
}
this.jasmineDone = function (result) {
result = result || {}
// Any errors in top-level afterAll blocks are given here.
handleGlobalErrors(result)
tc.complete({
order: result.order,
coverage: window.__coverage__
})
}
this.suiteStarted = function (result) {
currentSuite = currentSuite.addChild(result.description)
tc.info({
event: 'suiteStarted',
result: result
})
}
this.suiteDone = function (result) {
// In the case of xdescribe, only "suiteDone" is fired.
// We need to skip that.
if (result.description !== currentSuite.name) {
return
}
// Any errors in afterAll blocks are given here, except for top-level
// afterAll blocks.
handleGlobalErrors(result)
currentSuite = currentSuite.parent
tc.info({
event: 'suiteDone',
result: result
})
}
this.specStarted = function () {
startTimeCurrentSpec = new _Date().getTime()
}
this.specDone = function (specResult) {
var skipped = specResult.status === 'disabled' || specResult.status === 'pending' || specResult.status === 'excluded'
var result = {
fullName: specResult.fullName,
description: specResult.description,
id: specResult.id,
log: [],
skipped: skipped,
disabled: specResult.status === 'disabled' || specResult.status === 'excluded',
pending: specResult.status === 'pending',
success: specResult.failedExpectations.length === 0,
suite: [],
time: skipped ? 0 : new _Date().getTime() - startTimeCurrentSpec,
executedExpectationsCount: specResult.failedExpectations.length + specResult.passedExpectations.length,
passedExpectations: specResult.passedExpectations,
properties: specResult.properties
}
// generate ordered list of (nested) suite names
var suitePointer = currentSuite
while (suitePointer.parent) {
result.suite.unshift(suitePointer.name)
suitePointer = suitePointer.parent
}
if (!result.success) {
var steps = specResult.failedExpectations
for (var i = 0, l = steps.length; i < l; i++) {
result.log.push(formatFailedStep(steps[i]))
}
if (typeof window !== 'undefined' && window.location && window.location.origin) {
// Report the name of fhe failing spec so the reporter can emit a debug url.
result.debug_url = debugUrl(specResult.fullName)
}
}
// When failSpecWithNoExpectations is true, Jasmine will report specs without expectations as failed
if (result.executedExpectationsCount === 0 && specResult.status === 'failed') {
result.success = false
result.log.push('Spec has no expectations')
}
tc.result(result)
delete specResult.startTime
}
}
/**
* Extract grep option from karma config
* @param {[Array|string]} clientArguments The karma client arguments
* @return {string} The value of grep option by default empty string
*/
var getGrepOption = function (clientArguments) {
var grepRegex = /^--grep=(.*)$/
if (Object.prototype.toString.call(clientArguments) === '[object Array]') {
var indexOfGrep = indexOf(clientArguments, '--grep')
if (indexOfGrep !== -1) {
return clientArguments[indexOfGrep + 1]
}
return map(filter(clientArguments, function (arg) {
return grepRegex.test(arg)
}), function (arg) {
return arg.replace(grepRegex, '$1')
})[0] || ''
} else if (typeof clientArguments === 'string') {
var match = /--grep=([^=]+)/.exec(clientArguments)
return match ? match[1] : ''
}
}
var createRegExp = function (filter) {
filter = filter || ''
if (filter === '') {
return new RegExp() // to match all
}
var regExp = /^[/](.*)[/]([gmixXsuUAJD]*)$/ // pattern to check whether the string is RegExp pattern
var parts = regExp.exec(filter)
if (parts === null) {
return new RegExp(filter.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, '\\$&')) // escape functional symbols
}
var patternExpression = parts[1]
var patternSwitches = parts[2]
return new RegExp(patternExpression, patternSwitches)
}
function getGrepSpecsToRun (clientConfig, specs) {
var grepOption = getGrepOption(clientConfig.args)
if (grepOption) {
var regExp = createRegExp(grepOption)
return filter(specs, function specFilter (spec) {
return regExp.test(spec.getFullName())
})
}
}
function parseQueryParams (location) {
var params = {}
if (location && Object.prototype.hasOwnProperty.call(location, 'search')) {
var pairs = location.search.substr(1).split('&')
for (var i = 0; i < pairs.length; i++) {
var keyValue = pairs[i].split('=')
params[decodeURIComponent(keyValue[0])] =
decodeURIComponent(keyValue[1])
}
}
return params
}
function getId (s) {
return s.id
}
function getSpecsByName (specs, name) {
specs = specs.filter(function (s) {
return s.name === name
})
if (specs.length === 0) {
throw new Error('No spec found with name: "' + name + '"')
}
return specs
}
function getDebugSpecToRun (location, specs) {
var queryParams = parseQueryParams(location)
var spec = queryParams.spec
if (spec) {
// A single spec has been requested by name for debugging.
return getSpecsByName(specs, spec)
}
}
function getSpecsToRunForCurrentShard (specs, shardIndex, totalShards) {
if (specs.length < totalShards) {
throw new Error(
'More shards (' + totalShards + ') than test specs (' + specs.length +
')')
}
// Just do a simple sharding strategy of dividing the number of specs
// equally.
var firstSpec = Math.floor(specs.length * shardIndex / totalShards)
var lastSpec = Math.floor(specs.length * (shardIndex + 1) / totalShards)
return specs.slice(firstSpec, lastSpec)
}
function getShardedSpecsToRun (specs, clientConfig) {
var shardIndex = clientConfig.shardIndex
var totalShards = clientConfig.totalShards
if (shardIndex != null && totalShards != null) {
// Sharded mode - Run only the subset of the specs corresponding to the
// current shard.
return getSpecsToRunForCurrentShard(
specs, Number(shardIndex), Number(totalShards))
}
}
/**
* Create jasmine spec filter
* @param {Object} clientConfig karma config
* @param {!Object} jasmineEnv
*/
var KarmaSpecFilter = function (clientConfig, jasmineEnv) {
/**
* Walk the test suite tree depth first and collect all test specs
* @param {!Object} jasmineEnv
* @return {!Array<string>} All possible tests.
*/
function getAllSpecs (jasmineEnv) {
var specs = []
var stack = [jasmineEnv.topSuite()]
var currentNode
while ((currentNode = stack.pop())) {
if (currentNode.children) {
// jasmine.Suite
stack = stack.concat(currentNode.children)
} else if (currentNode.id) {
// jasmine.Spec
specs.unshift(currentNode)
}
}
return specs
}
/**
* Filter the specs with URL search params and config.
* @param {!Object} location property 'search' from URL.
* @param {!Object} clientConfig karma client config
* @param {!Object} jasmineEnv
* @return {!Array<string>}
*/
function getSpecsToRun (location, clientConfig, jasmineEnv) {
var specs = getAllSpecs(jasmineEnv).map(function (spec) {
spec.name = spec.getFullName()
return spec
})
if (!specs || !specs.length) {
return []
}
return getGrepSpecsToRun(clientConfig, specs) ||
getDebugSpecToRun(location, specs) ||
getShardedSpecsToRun(specs, clientConfig) ||
specs
}
this.specIdsToRun =
getSpecsToRun(window.location, clientConfig, jasmineEnv).map(getId)
this.matches = function (spec) {
return this.specIdsToRun.indexOf(spec.id) !== -1
}
}
/**
* Configure jasmine specFilter
*
* This function is invoked from the wrapper.
* @see adapter.wrapper
*
* @param {Object} config The karma config
* @param {Object} jasmineEnv jasmine environment object
*/
var createSpecFilter = function (config, jasmineEnv) {
var karmaSpecFilter = new KarmaSpecFilter(config, jasmineEnv)
var specFilter = function (spec) {
return karmaSpecFilter.matches(spec)
}
return specFilter
}
/**
* Karma starter function factory.
*
* This function is invoked from the wrapper.
* @see adapter.wrapper
*
* @param {Object} karma Karma runner instance.
* @param {Object} [jasmineEnv] Optional Jasmine environment for testing.
* @return {Function} Karma starter function.
*/
function createStartFn (karma, jasmineEnv) {
// This function will be assigned to `window.__karma__.start`:
return function () {
var clientConfig = karma.config || {}
var jasmineConfig = clientConfig.jasmine || {}
jasmineEnv = jasmineEnv || window.jasmine.getEnv()
jasmineConfig.specFilter = createSpecFilter(clientConfig, jasmineEnv)
jasmineEnv.configure(jasmineConfig)
window.jasmine.DEFAULT_TIMEOUT_INTERVAL = jasmineConfig.timeoutInterval ||
window.jasmine.DEFAULT_TIMEOUT_INTERVAL
jasmineEnv.addReporter(new KarmaReporter(karma, jasmineEnv))
jasmineEnv.execute()
}
}
function indexOf (collection, find, i /* opt */) {
if (collection.indexOf) {
return collection.indexOf(find, i)
}
if (i === undefined) { i = 0 }
if (i < 0) { i += collection.length }
if (i < 0) { i = 0 }
for (var n = collection.length; i < n; i++) {
if (i in collection && collection[i] === find) {
return i
}
}
return -1
}
function filter (collection, filter, that /* opt */) {
if (collection.filter) {
return collection.filter(filter, that)
}
var other = []
var v
for (var i = 0, n = collection.length; i < n; i++) {
if (i in collection && filter.call(that, v = collection[i], i, collection)) {
other.push(v)
}
}
return other
}
function map (collection, mapper, that /* opt */) {
if (collection.map) {
return collection.map(mapper, that)
}
var other = new Array(collection.length)
for (var i = 0, n = collection.length; i < n; i++) {
if (i in collection) {
other[i] = mapper.call(that, collection[i], i, collection)
}
}
return other
}