/
it.go
81 lines (67 loc) · 1.83 KB
/
it.go
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package examples
import (
"fmt"
"github.com/benmills/quiz"
"strings"
)
type Expectation func(interface{}) *quiz.Expectation
func It(behavior string, testBody func(Expectation)) result {
if len(filter) > 0 && !strings.Contains(behavior, filter) {
return result{Skip: true}
}
listener, runner := newListenerRunnerPair()
go executeTestBody(behavior, runner, testBody)
passed, desc := listener.Results()
if !passed {
return result{Description: "it " + behavior + ": \n" + desc, Failed: true}
}
return result{Description: "it " + behavior, Failed: false}
}
func executeTestBody(desc string, runner *exampleRunner, body func(Expectation)) {
expectation := func(target interface{}) *quiz.Expectation {
return quiz.NewExpectation(runner, target)
}
defer func() {
if r := recover(); r != nil {
runner.Log(fmt.Sprintf("Panic while executing it '"+desc+"': %v", r))
runner.FailNow()
}
}()
body(expectation)
runner.Pass()
}
func newListenerRunnerPair() (*exampleRunner, *exampleRunner) {
successChan := make(chan bool)
messageChan := make(chan string)
l := &exampleRunner{Finished: successChan, Message: messageChan}
r := &exampleRunner{Finished: successChan, Message: messageChan}
return l, r
}
type exampleRunner struct {
Finished chan bool
Message chan string
description string
}
func (er *exampleRunner) Results() (bool, string) {
for {
select {
case success := <-er.Finished:
return success, er.description
case newDescription := <-er.Message:
er.description = newDescription
}
}
return true, ""
}
func (er *exampleRunner) FailNow() {
er.Finished <- false
}
func (er *exampleRunner) Pass() {
er.Finished <- true
}
func (er *exampleRunner) Log(line string) {
er.Message <- line
}
func (er *exampleRunner) Expect(target interface{}) *quiz.Expectation {
return quiz.NewExpectation(er, target)
}