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/*
Ginkgo is a BDD-style testing framework for Golang
The godoc documentation describes Ginkgo's API. More comprehensive documentation (with examples!) is available at http://onsi.github.io/ginkgo/
Ginkgo's preferred matcher library is [Gomega](http://github.com/onsi/gomega)
Ginkgo on Github: http://github.com/onsi/ginkgo
Ginkgo is MIT-Licensed
*/
package ginkgo
import (
"flag"
"fmt"
"io"
"net/http"
"os"
"strings"
"time"
"github.com/onsi/ginkgo/config"
"github.com/onsi/ginkgo/internal/codelocation"
"github.com/onsi/ginkgo/internal/failer"
"github.com/onsi/ginkgo/internal/remote"
"github.com/onsi/ginkgo/internal/suite"
"github.com/onsi/ginkgo/internal/testingtproxy"
"github.com/onsi/ginkgo/internal/writer"
"github.com/onsi/ginkgo/reporters"
"github.com/onsi/ginkgo/reporters/stenographer"
"github.com/onsi/ginkgo/types"
)
const GINKGO_VERSION = config.VERSION
const GINKGO_PANIC = `
Your test failed.
Ginkgo panics to prevent subsequent assertions from running.
Normally Ginkgo rescues this panic so you shouldn't see it.
But, if you make an assertion in a goroutine, Ginkgo can't capture the panic.
To circumvent this, you should call
defer GinkgoRecover()
at the top of the goroutine that caused this panic.
`
const defaultTimeout = 1
var globalSuite *suite.Suite
var globalFailer *failer.Failer
func init() {
config.Flags(flag.CommandLine, "ginkgo", true)
GinkgoWriter = writer.New(os.Stdout)
globalFailer = failer.New()
globalSuite = suite.New(globalFailer)
}
//GinkgoWriter implements an io.Writer
//When running in verbose mode any writes to GinkgoWriter will be immediately printed
//to stdout. Otherwise, GinkgoWriter will buffer any writes produced during the current test and flush them to screen
//only if the current test fails.
var GinkgoWriter io.Writer
//The interface by which Ginkgo receives *testing.T
type GinkgoTestingT interface {
Fail()
}
//GinkgoRandomSeed returns the seed used to randomize spec execution order. It is
//useful for seeding your own pseudorandom number generators (PRNGs) to ensure
//consistent executions from run to run, where your tests contain variability (for
//example, when selecting random test data).
func GinkgoRandomSeed() int64 {
return config.GinkgoConfig.RandomSeed
}
//GinkgoParallelNode returns the parallel node number for the current ginkgo process
//The node number is 1-indexed
func GinkgoParallelNode() int {
return config.GinkgoConfig.ParallelNode
}
//Some matcher libraries or legacy codebases require a *testing.T
//GinkgoT implements an interface analogous to *testing.T and can be used if
//the library in question accepts *testing.T through an interface
//
// For example, with testify:
// assert.Equal(GinkgoT(), 123, 123, "they should be equal")
//
// Or with gomock:
// gomock.NewController(GinkgoT())
//
// GinkgoT() takes an optional offset argument that can be used to get the
// correct line number associated with the failure.
func GinkgoT(optionalOffset ...int) GinkgoTInterface {
offset := 3
if len(optionalOffset) > 0 {
offset = optionalOffset[0]
}
return testingtproxy.New(GinkgoWriter, Fail, offset)
}
//The interface returned by GinkgoT(). This covers most of the methods
//in the testing package's T.
type GinkgoTInterface interface {
Fail()
Error(args ...interface{})
Errorf(format string, args ...interface{})
FailNow()
Fatal(args ...interface{})
Fatalf(format string, args ...interface{})
Log(args ...interface{})
Logf(format string, args ...interface{})
Failed() bool
Parallel()
Skip(args ...interface{})
Skipf(format string, args ...interface{})
SkipNow()
Skipped() bool
}
//Custom Ginkgo test reporters must implement the Reporter interface.
//
//The custom reporter is passed in a SuiteSummary when the suite begins and ends,
//and a SpecSummary just before a spec begins and just after a spec ends
type Reporter reporters.Reporter
//Asynchronous specs are given a channel of the Done type. You must close or write to the channel
//to tell Ginkgo that your async test is done.
type Done chan<- interface{}
//GinkgoTestDescription represents the information about the current running test returned by CurrentGinkgoTestDescription
// FullTestText: a concatenation of ComponentTexts and the TestText
// ComponentTexts: a list of all texts for the Describes & Contexts leading up to the current test
// TestText: the text in the actual It or Measure node
// IsMeasurement: true if the current test is a measurement
// FileName: the name of the file containing the current test
// LineNumber: the line number for the current test
// Failed: if the current test has failed, this will be true (useful in an AfterEach)
type GinkgoTestDescription struct {
FullTestText string
ComponentTexts []string
TestText string
IsMeasurement bool
FileName string
LineNumber int
Failed bool
Duration time.Duration
}
//CurrentGinkgoTestDescripton returns information about the current running test.
func CurrentGinkgoTestDescription() GinkgoTestDescription {
summary, ok := globalSuite.CurrentRunningSpecSummary()
if !ok {
return GinkgoTestDescription{}
}
subjectCodeLocation := summary.ComponentCodeLocations[len(summary.ComponentCodeLocations)-1]
return GinkgoTestDescription{
ComponentTexts: summary.ComponentTexts[1:],
FullTestText: strings.Join(summary.ComponentTexts[1:], " "),
TestText: summary.ComponentTexts[len(summary.ComponentTexts)-1],
IsMeasurement: summary.IsMeasurement,
FileName: subjectCodeLocation.FileName,
LineNumber: subjectCodeLocation.LineNumber,
Failed: summary.HasFailureState(),
Duration: summary.RunTime,
}
}
//Measurement tests receive a Benchmarker.
//
//You use the Time() function to time how long the passed in body function takes to run
//You use the RecordValue() function to track arbitrary numerical measurements.
//The RecordValueWithPrecision() function can be used alternatively to provide the unit
//and resolution of the numeric measurement.
//The optional info argument is passed to the test reporter and can be used to
// provide the measurement data to a custom reporter with context.
//
//See http://onsi.github.io/ginkgo/#benchmark_tests for more details
type Benchmarker interface {
Time(name string, body func(), info ...interface{}) (elapsedTime time.Duration)
RecordValue(name string, value float64, info ...interface{})
RecordValueWithPrecision(name string, value float64, units string, precision int, info ...interface{})
}
//RunSpecs is the entry point for the Ginkgo test runner.
//You must call this within a Golang testing TestX(t *testing.T) function.
//
//To bootstrap a test suite you can use the Ginkgo CLI:
//
// ginkgo bootstrap
func RunSpecs(t GinkgoTestingT, description string) bool {
specReporters := []Reporter{buildDefaultReporter()}
return RunSpecsWithCustomReporters(t, description, specReporters)
}
//To run your tests with Ginkgo's default reporter and your custom reporter(s), replace
//RunSpecs() with this method.
func RunSpecsWithDefaultAndCustomReporters(t GinkgoTestingT, description string, specReporters []Reporter) bool {
specReporters = append(specReporters, buildDefaultReporter())
return RunSpecsWithCustomReporters(t, description, specReporters)
}
//To run your tests with your custom reporter(s) (and *not* Ginkgo's default reporter), replace
//RunSpecs() with this method. Note that parallel tests will not work correctly without the default reporter
func RunSpecsWithCustomReporters(t GinkgoTestingT, description string, specReporters []Reporter) bool {
writer := GinkgoWriter.(*writer.Writer)
writer.SetStream(config.DefaultReporterConfig.Verbose)
reporters := make([]reporters.Reporter, len(specReporters))
for i, reporter := range specReporters {
reporters[i] = reporter
}
passed, hasFocusedTests := globalSuite.Run(t, description, reporters, writer, config.GinkgoConfig)
if passed && hasFocusedTests && strings.TrimSpace(os.Getenv("GINKGO_EDITOR_INTEGRATION")) == "" {
fmt.Println("PASS | FOCUSED")
os.Exit(types.GINKGO_FOCUS_EXIT_CODE)
}
return passed
}
func buildDefaultReporter() Reporter {
remoteReportingServer := config.GinkgoConfig.StreamHost
if remoteReportingServer == "" {
stenographer := stenographer.New(!config.DefaultReporterConfig.NoColor, config.GinkgoConfig.FlakeAttempts > 1)
return reporters.NewDefaultReporter(config.DefaultReporterConfig, stenographer)
} else {
return remote.NewForwardingReporter(remoteReportingServer, &http.Client{}, remote.NewOutputInterceptor())
}
}
//Skip notifies Ginkgo that the current spec was skipped.
func Skip(message string, callerSkip ...int) {
skip := 0
if len(callerSkip) > 0 {
skip = callerSkip[0]
}
globalFailer.Skip(message, codelocation.New(skip+1))
panic(GINKGO_PANIC)
}
//Fail notifies Ginkgo that the current spec has failed. (Gomega will call Fail for you automatically when an assertion fails.)
func Fail(message string, callerSkip ...int) {
skip := 0
if len(callerSkip) > 0 {
skip = callerSkip[0]
}
globalFailer.Fail(message, codelocation.New(skip+1))
panic(GINKGO_PANIC)
}
//GinkgoRecover should be deferred at the top of any spawned goroutine that (may) call `Fail`
//Since Gomega assertions call fail, you should throw a `defer GinkgoRecover()` at the top of any goroutine that
//calls out to Gomega
//
//Here's why: Ginkgo's `Fail` method records the failure and then panics to prevent
//further assertions from running. This panic must be recovered. Ginkgo does this for you
//if the panic originates in a Ginkgo node (an It, BeforeEach, etc...)
//
//Unfortunately, if a panic originates on a goroutine *launched* from one of these nodes there's no
//way for Ginkgo to rescue the panic. To do this, you must remember to `defer GinkgoRecover()` at the top of such a goroutine.
func GinkgoRecover() {
e := recover()
if e != nil {
globalFailer.Panic(codelocation.New(1), e)
}
}
//Describe blocks allow you to organize your specs. A Describe block can contain any number of
//BeforeEach, AfterEach, JustBeforeEach, It, and Measurement blocks.
//
//In addition you can nest Describe, Context and When blocks. Describe, Context and When blocks are functionally
//equivalent. The difference is purely semantic -- you typical Describe the behavior of an object
//or method and, within that Describe, outline a number of Contexts and Whens.
func Describe(text string, body func()) bool {
globalSuite.PushContainerNode(text, body, types.FlagTypeNone, codelocation.New(1))
return true
}
//You can focus the tests within a describe block using FDescribe
func FDescribe(text string, body func()) bool {
globalSuite.PushContainerNode(text, body, types.FlagTypeFocused, codelocation.New(1))
return true
}
//You can mark the tests within a describe block as pending using PDescribe
func PDescribe(text string, body func()) bool {
globalSuite.PushContainerNode(text, body, types.FlagTypePending, codelocation.New(1))
return true
}
//You can mark the tests within a describe block as pending using XDescribe
func XDescribe(text string, body func()) bool {
globalSuite.PushContainerNode(text, body, types.FlagTypePending, codelocation.New(1))
return true
}
//Context blocks allow you to organize your specs. A Context block can contain any number of
//BeforeEach, AfterEach, JustBeforeEach, It, and Measurement blocks.
//
//In addition you can nest Describe, Context and When blocks. Describe, Context and When blocks are functionally
//equivalent. The difference is purely semantic -- you typical Describe the behavior of an object
//or method and, within that Describe, outline a number of Contexts and Whens.
func Context(text string, body func()) bool {
globalSuite.PushContainerNode(text, body, types.FlagTypeNone, codelocation.New(1))
return true
}
//You can focus the tests within a describe block using FContext
func FContext(text string, body func()) bool {
globalSuite.PushContainerNode(text, body, types.FlagTypeFocused, codelocation.New(1))
return true
}
//You can mark the tests within a describe block as pending using PContext
func PContext(text string, body func()) bool {
globalSuite.PushContainerNode(text, body, types.FlagTypePending, codelocation.New(1))
return true
}
//You can mark the tests within a describe block as pending using XContext
func XContext(text string, body func()) bool {
globalSuite.PushContainerNode(text, body, types.FlagTypePending, codelocation.New(1))
return true
}
//When blocks allow you to organize your specs. A When block can contain any number of
//BeforeEach, AfterEach, JustBeforeEach, It, and Measurement blocks.
//
//In addition you can nest Describe, Context and When blocks. Describe, Context and When blocks are functionally
//equivale
10BC8
nt. The difference is purely semantic -- you typical Describe the behavior of an object
//or method and, within that Describe, outline a number of Contexts and Whens.
func When(text string, body func()) bool {
globalSuite.PushContainerNode("when "+text, body, types.FlagTypeNone, codelocation.New(1))
return true
}
//You can focus the tests within a describe block using FWhen
func FWhen(text string, body func()) bool {
globalSuite.PushContainerNode("when "+text, body, types.FlagTypeFocused, codelocation.New(1))
return true
}
//You can mark the tests within a describe block as pending using PWhen
func PWhen(text string, body func()) bool {
globalSuite.PushContainerNode("when "+text, body, types.FlagTypePending, codelocation.New(1))
return true
}
//You can mark the tests within a describe block as pending using XWhen
func XWhen(text string, body func()) bool {
globalSuite.PushContainerNode("when "+text, body, types.FlagTypePending, codelocation.New(1))
return true
}
//It blocks contain your test code and assertions. You cannot nest any other Ginkgo blocks
//within an It block.
//
//Ginkgo will normally run It blocks synchronously. To perform asynchronous tests, pass a
//function that accepts a Done channel. When you do this, you can also provide an optional timeout.
func It(text string, body interface{}, timeout ...float64) bool {
globalSuite.PushItNode(text, body, types.FlagTypeNone, codelocation.New(1), parseTimeout(timeout...))
return true
}
//You can focus individual Its using FIt
func FIt(text string, body interface{}, timeout ...float64) bool {
globalSuite.PushItNode(text, body, types.FlagTypeFocused, codelocation.New(1), parseTimeout(timeout...))
return true
}
//You can mark Its as pending using PIt
func PIt(text string, _ ...interface{}) bool {
globalSuite.PushItNode(text, func() {}, types.FlagTypePending, codelocation.New(1), 0)
return true
}
//You can mark Its as pending using XIt
func XIt(text string, _ ...interface{}) bool {
globalSuite.PushItNode(text, func() {}, types.FlagTypePending, codelocation.New(1), 0)
return true
}
//Specify blocks are aliases for It blocks and allow for more natural wording in situations
//which "It" does not fit into a natural sentence flow. All the same protocols apply for Specify blocks
//which apply to It blocks.
func Specify(text string, body interface{}, timeout ...float64) bool {
globalSuite.PushItNode(text, body, types.FlagTypeNone, codelocation.New(1), parseTimeout(timeout...))
return true
}
//You can focus individual Specifys using FSpecify
func FSpecify(text string, body interface{}, timeout ...float64) bool {
globalSuite.PushItNode(text, body, types.FlagTypeFocused, codelocation.New(1), parseTimeout(timeout...))
return true
}
//You can mark Specifys as pending using PSpecify
func PSpecify(text string, is ...interface{}) bool {
globalSuite.PushItNode(text, func() {}, types.FlagTypePending, codelocation.New(1), 0)
return true
}
//You can mark Specifys as pending using XSpecify
func XSpecify(text string, is ...interface{}) bool {
globalSuite.PushItNode(text, func() {}, types.FlagTypePending, codelocation.New(1), 0)
return true
}
//By allows you to better document large Its.
//
//Generally you should try to keep your Its short and to the point. This is not always possible, however,
//especially in the context of integration tests that capture a particular workflow.
//
//By allows you to document such flows. By must be called within a runnable node (It, BeforeEach, Measure, etc...)
//By will simply log the passed in text to the GinkgoWriter. If By is handed a function it will immediately run the function.
func By(text string, callbacks ...func()) {
preamble := "\x1b[1mSTEP\x1b[0m"
if config.DefaultReporterConfig.NoColor {
preamble = "STEP"
}
fmt.Fprintln(GinkgoWriter, preamble+": "+text)
if len(callbacks) == 1 {
callbacks[0]()
}
if len(callbacks) > 1 {
panic("just one callback per By, please")
}
}
//Measure blocks run the passed in body function repeatedly (determined by the samples argument)
//and accumulate metrics provided to the Benchmarker by the body function.
//
//The body function must have the signature:
// func(b Benchmarker)
func Measure(text string, body interface{}, samples int) bool {
globalSuite.PushMeasureNode(text, body, types.FlagTypeNone, codelocation.New(1), samples)
return true
}
//You can focus individual Measures using FMeasure
func FMeasure(text string, body interface{}, samples int) bool {
globalSuite.PushMeasureNode(text, body, types.FlagTypeFocused, codelocation.New(1), samples)
return true
}
//You can mark Maeasurements as pending using PMeasure
func PMeasure(text string, _ ...interface{}) bool {
globalSuite.PushMeasureNode(text, func(b Benchmarker) {}, types.FlagTypePending, codelocation.New(1), 0)
return true
}
//You can mark Maeasurements as pending using XMeasure
func XMeasure(text string, _ ...interface{}) bool {
globalSuite.PushMeasureNode(text, func(b Benchmarker) {}, types.FlagTypePending, codelocation.New(1), 0)
return true
}
//BeforeSuite blocks are run just once before any specs are run. When running in parallel, each
//parallel node process will call BeforeSuite.
//
//BeforeSuite blocks can be made asynchronous by providing a body function that accepts a Done channel
//
//You may only register *one* BeforeSuite handler per test suite. You typically do so in your bootstrap file at the top level.
func BeforeSuite(body interface{}, timeout ...float64) bool {
globalSuite.SetBeforeSuiteNode(body, codelocation.New(1), parseTimeout(timeout...))
return true
}
//AfterSuite blocks are *always* run after all the specs regardless of whether specs have passed or failed.
//Moreover, if Ginkgo receives an interrupt signal (^C) it will attempt to run the AfterSuite before exiting.
//
//When running in parallel, each parallel node process will call AfterSuite.
//
//AfterSuite blocks can be made asynchronous by providing a body function that accepts a Done channel
//
//You may only register *one* AfterSuite handler per test suite. You typically do so in your bootstrap file at the top level.
func AfterSuite(body interface{}, timeout ...float64) bool {
globalSuite.SetAfterSuiteNode(body, codelocation.New(1), parseTimeout(timeout...))
return true
}
//SynchronizedBeforeSuite blocks are primarily meant to solve the problem of setting up singleton external resources shared across
//nodes when running tests in parallel. For example, say you have a shared database that you can only start one instance of that
//must be used in your tests. When running in parallel, only one node should set up the database and all other nodes should wait
//until that node is done before running.
//
//SynchronizedBeforeSuite accomplishes this by taking *two* function arguments. The first is only run on parallel node #1. The second is
//run on all nodes, but *only* after the first function completes succesfully. Ginkgo also makes it possible to send data from the first function (on Node 1)
//to the second function (on all the other nodes).
//
//The functions have the following signatures. The first function (which only runs on node 1) has the signature:
//
// func() []byte
//
//or, to run asynchronously:
//
// func(done Done) []byte
//
//The byte array returned by the first function is then passed to the second function, which has the signature:
//
// func(data []byte)
//
//or, to run asynchronously:
//
// func(data []byte, done Done)
//
//Here's a simple pseudo-code example that starts a shared database on Node 1 and shares the database's address with the other nodes:
//
// var dbClient db.Client
// var dbRunner db.Runner
//
// var _ = SynchronizedBeforeSuite(func() []byte {
// dbRunner = db.NewRunner()
// err := dbRunner.Start()
// Ω(err).ShouldNot(HaveOccurred())
// return []byte(dbRunner.URL)
// }, func(data []byte) {
// dbClient = db.NewClient()
// err := dbClient.Connect(string(data))
// Ω(err).ShouldNot(HaveOccurred())
// })
func SynchronizedBeforeSuite(node1Body interface{}, allNodesBody interface{}, timeout ...float64) bool {
globalSuite.SetSynchronizedBeforeSuiteNode(
node1Body,
allNodesBody,
codelocation.New(1),
parseTimeout(timeout...),
)
return true
}
//SynchronizedAfterSuite blocks complement the SynchronizedBeforeSuite blocks in solving the problem of setting up
//external singleton resources shared across nodes when running tests in parallel.
//
//SynchronizedAfterSuite accomplishes this by taking *two* function arguments. The first runs on all nodes. The second runs only on parallel node #1
//and *only* after all other nodes have finished and exited. This ensures that node 1, and any resources it is running, remain alive until
//all other nodes are finished.
//
//Both functions have the same signature: either func() or func(done Done) to run asynchronously.
//
//Here's a pseudo-code example that complements that given in SynchronizedBeforeSuite. Here, SynchronizedAfterSuite is used to tear down the shared database
//only after all nodes have finished:
//
// var _ = SynchronizedAfterSuite(func() {
// dbClient.Cleanup()
// }, func() {
// dbRunner.Stop()
// })
func SynchronizedAfterSuite(allNodesBody interface{}, node1Body interface{}, timeout ...float64) bool {
globalSuite.SetSynchronizedAfterSuiteNode(
allNodesBody,
node1Body,
codelocation.New(1),
parseTimeout(timeout...),
)
return true
}
//BeforeEach blocks are run before It blocks. When multiple BeforeEach blocks are defined in nested
//Describe and Context blocks the outermost BeforeEach blocks are run first.
//
//Like It blocks, BeforeEach blocks can be made asynchronous by providing a body function that accepts
//a Done channel
func BeforeEach(body interface{}, timeout ...float64) bool {
globalSuite.PushBeforeEachNode(body, codelocation.New(1), parseTimeout(timeout...))
return true
}
//JustBeforeEach blocks are run before It blocks but *after* all BeforeEach blocks. For more details,
//read the [documentation](http://onsi.github.io/ginkgo/#separating_creation_and_configuration_)
//
//Like It blocks, BeforeEach blocks can be made asynchronous by providing a body function that accepts
//a Done channel
func JustBeforeEach(body interface{}, timeout ...float64) bool {
globalSuite.PushJustBeforeEachNode(body, codelocation.New(1), parseTimeout(timeout...))
return true
}
//AfterEach blocks are run after It blocks. When multiple AfterEach blocks are defined in nested
//Describe and Context blocks the innermost AfterEach blocks are run first.
//
//Like It blocks, AfterEach blocks can be made asynchronous by providing a body function that accepts
//a Done channel
func AfterEach(body interface{}, timeout ...float64) bool {
globalSuite.PushAfterEachNode(body, codelocation.New(1), parseTimeout(timeout...))
return true
}
func parseTimeout(timeout ...float64) time.Duration {
if len(timeout) == 0 {
return time.Duration(defaultTimeout * int64(time.Second))
} else {
return time.Duration(timeout[0] * float64(time.Second))
}
}