151 lines
3.1 KiB
Go
151 lines
3.1 KiB
Go
// Package mock provides a mock client for testing
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package mock
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import (
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"context"
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"fmt"
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"reflect"
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"sync"
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"github.com/micro/go-micro/client"
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"github.com/micro/go-micro/errors"
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)
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var (
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_ client.Client = NewClient()
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)
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type MockResponse struct {
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Endpoint string
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Response interface{}
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Error error
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}
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type MockClient struct {
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Client client.Client
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Opts client.Options
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sync.Mutex
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Response map[string][]MockResponse
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}
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func (m *MockClient) Init(opts ...client.Option) error {
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m.Lock()
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defer m.Unlock()
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for _, opt := range opts {
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opt(&m.Opts)
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}
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r, ok := fromContext(m.Opts.Context)
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if !ok {
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r = make(map[string][]MockResponse)
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}
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m.Response = r
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return nil
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}
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func (m *MockClient) Options() client.Options {
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return m.Opts
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}
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func (m *MockClient) NewMessage(topic string, msg interface{}, opts ...client.MessageOption) client.Message {
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return m.Client.NewMessage(topic, msg, opts...)
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}
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func (m *MockClient) NewRequest(service, endpoint string, req interface{}, reqOpts ...client.RequestOption) client.Request {
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return m.Client.NewRequest(service, endpoint, req, reqOpts...)
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}
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func (m *MockClient) Call(ctx context.Context, req client.Request, rsp interface{}, opts ...client.CallOption) error {
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m.Lock()
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defer m.Unlock()
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response, ok := m.Response[req.Service()]
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if !ok {
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return errors.NotFound("go.micro.client.mock", "service not found")
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}
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for _, r := range response {
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if r.Endpoint != req.Endpoint() {
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continue
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}
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if r.Error != nil {
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return r.Error
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}
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v := reflect.ValueOf(rsp)
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if t := reflect.TypeOf(rsp); t.Kind() == reflect.Ptr {
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v = reflect.Indirect(v)
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}
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response := r.Response
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if t := reflect.TypeOf(r.Response); t.Kind() == reflect.Func {
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var request []reflect.Value
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switch t.NumIn() {
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case 1:
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// one input params: (req)
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request = append(request, reflect.ValueOf(req.Body()))
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case 2:
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// two input params: (ctx, req)
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request = append(request, reflect.ValueOf(ctx), reflect.ValueOf(req.Body()))
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}
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responseValue := reflect.ValueOf(r.Response).Call(request)
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response = responseValue[0].Interface()
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if len(responseValue) == 2 {
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// make it possible to return error in response function
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respErr, ok := responseValue[1].Interface().(error)
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if ok && respErr != nil {
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return respErr
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}
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}
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}
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v.Set(reflect.ValueOf(response))
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return nil
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}
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return fmt.Errorf("rpc: can't find service %s", req.Endpoint())
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}
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func (m *MockClient) Stream(ctx context.Context, req client.Request, opts ...client.CallOption) (client.Stream, error) {
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m.Lock()
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defer m.Unlock()
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// TODO: mock stream
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return nil, nil
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}
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func (m *MockClient) Publish(ctx context.Context, p client.Message, opts ...client.PublishOption) error {
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return nil
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}
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func (m *MockClient) String() string {
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return "mock"
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}
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func NewClient(opts ...client.Option) *MockClient {
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options := client.Options{
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Context: context.TODO(),
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}
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for _, opt := range opts {
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opt(&options)
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}
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r, ok := fromContext(options.Context)
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if !ok {
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r = make(map[string][]MockResponse)
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}
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return &MockClient{
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Client: client.DefaultClient,
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Opts: options,
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Response: r,
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}
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}
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