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testing.go
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package command
import (
"errors"
"fmt"
"reflect"
"github.com/AlecAivazis/survey/v2"
"github.com/AlecAivazis/survey/v2/core"
"github.com/cli/cli/api"
"github.com/cli/cli/context"
"github.com/cli/cli/internal/config"
)
const defaultTestConfig = `hosts:
github.com:
user: OWNER
oauth_token: 1234567890
`
type askStubber struct {
Asks [][]*survey.Question
Count int
Stubs [][]*QuestionStub
}
func initAskStubber() (*askStubber, func()) {
origSurveyAsk := SurveyAsk
as := askStubber{}
SurveyAsk = func(qs []*survey.Question, response interface{}, opts ...survey.AskOpt) error {
as.Asks = append(as.Asks, qs)
count := as.Count
as.Count += 1
if count >= len(as.Stubs) {
panic(fmt.Sprintf("more asks than stubs. most recent call: %v", qs))
}
// actually set response
stubbedQuestions := as.Stubs[count]
for i, sq := range stubbedQuestions {
q := qs[i]
if q.Name != sq.Name {
panic(fmt.Sprintf("stubbed question mismatch: %s != %s", q.Name, sq.Name))
}
if sq.Default {
defaultValue := reflect.ValueOf(q.Prompt).Elem().FieldByName("Default")
_ = core.WriteAnswer(response, q.Name, defaultValue)
} else {
_ = core.WriteAnswer(response, q.Name, sq.Value)
}
}
return nil
}
teardown := func() {
SurveyAsk = origSurveyAsk
}
return &as, teardown
}
type QuestionStub struct {
Name string
Value interface{}
Default bool
}
func (as *askStubber) Stub(stubbedQuestions []*QuestionStub) {
// A call to .Ask takes a list of questions; a stub is then a list of questions in the same order.
as.Stubs = append(as.Stubs, stubbedQuestions)
}
func initBlankContext(cfg, repo, branch string) {
initContext = func() context.Context {
ctx := context.NewBlank()
ctx.SetBaseRepo(repo)
ctx.SetBranch(branch)
ctx.SetRemotes(map[string]string{
"origin": "OWNER/REPO",
})
if cfg == "" {
cfg = defaultTestConfig
}
// NOTE we are not restoring the original readConfig; we never want to touch the config file on
// disk during tests.
config.StubConfig(cfg)
return ctx
}
}
func initFakeHTTP() *api.FakeHTTP {
http := &api.FakeHTTP{}
apiClientForContext = func(context.Context) (*api.Client, error) {
return api.NewClient(api.ReplaceTripper(http)), nil
}
return http
}
type errorStub struct {
message string
}
func (s errorStub) Output() ([]byte, error) {
return nil, errors.New(s.message)
}
func (s errorStub) Run() error {
return errors.New(s.message)
}