First stab at mock client

This commit is contained in:
Asim 2016-04-06 18:33:57 +01:00
parent bfe20d81d0
commit ac6b8b730b
4 changed files with 239 additions and 0 deletions

16
client/mock/context.go Normal file
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package mock
import (
"golang.org/x/net/context"
)
type responseKey struct{}
func fromContext(ctx context.Context) (map[string][]MockResponse, bool) {
r, ok := ctx.Value(responseKey{}).(map[string][]MockResponse)
return r, ok
}
func newContext(ctx context.Context, r map[string][]MockResponse) context.Context {
return context.WithValue(ctx, responseKey{}, r)
}

174
client/mock/mock.go Normal file
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package mock
import (
"fmt"
"reflect"
"sync"
"github.com/micro/go-micro/client"
"github.com/micro/go-micro/errors"
"golang.org/x/net/context"
)
var (
_ client.Client = NewClient()
)
type MockResponse struct {
Method string
Response interface{}
Error error
}
type MockClient struct {
Client client.Client
Opts client.Options
sync.Mutex
Response map[string][]MockResponse
}
func (m *MockClient) Init(opts ...client.Option) error {
m.Lock()
defer m.Unlock()
for _, opt := range opts {
opt(&m.Opts)
}
r, ok := fromContext(m.Opts.Context)
if !ok {
r = make(map[string][]MockResponse)
}
m.Response = r
return nil
}
func (m *MockClient) Options() client.Options {
return m.Opts
}
func (m *MockClient) NewPublication(topic string, msg interface{}) client.Publication {
return m.Client.NewPublication(topic, msg)
}
func (m *MockClient) NewRequest(service, method string, req interface{}, reqOpts ...client.RequestOption) client.Request {
return m.Client.NewRequest(service, method, req, reqOpts...)
}
func (m *MockClient) NewProtoRequest(service, method string, req interface{}, reqOpts ...client.RequestOption) client.Request {
return m.Client.NewProtoRequest(service, method, req, reqOpts...)
}
func (m *MockClient) NewJsonRequest(service, method string, req interface{}, reqOpts ...client.RequestOption) client.Request {
return m.Client.NewJsonRequest(service, method, req, reqOpts...)
}
func (m *MockClient) Call(ctx context.Context, req client.Request, rsp interface{}, opts ...client.CallOption) error {
m.Lock()
defer m.Unlock()
response, ok := m.Response[req.Service()]
if !ok {
return errors.NotFound("go.micro.client.mock", "service not found")
}
for _, r := range response {
if r.Method != req.Method() {
continue
}
if r.Error != nil {
return r.Error
}
v := reflect.ValueOf(rsp)
if t := reflect.TypeOf(rsp); t.Kind() == reflect.Ptr {
v = reflect.Indirect(v)
}
v.Set(reflect.ValueOf(r.Response))
return nil
}
return fmt.Errorf("rpc: can't find service %s", req.Method())
}
func (m *MockClient) CallRemote(ctx context.Context, addr string, req client.Request, rsp interface{}, opts ...client.CallOption) error {
m.Lock()
defer m.Unlock()
response, ok := m.Response[req.Service()]
if !ok {
return errors.NotFound("go.micro.client.mock", "service not found")
}
for _, r := range response {
if r.Method != req.Method() {
continue
}
if r.Error != nil {
return r.Error
}
v := reflect.ValueOf(rsp)
if t := reflect.TypeOf(rsp); t.Kind() == reflect.Ptr {
v = reflect.Indirect(v)
}
v.Set(reflect.ValueOf(r.Response))
}
return fmt.Errorf("rpc: can't find service %s", req.Method())
}
func (m *MockClient) Stream(ctx context.Context, req client.Request, opts ...client.CallOption) (client.Streamer, error) {
m.Lock()
defer m.Unlock()
// TODO: mock stream
return nil, nil
}
func (m *MockClient) StreamRemote(ctx context.Context, addr string, req client.Request, opts ...client.CallOption) (client.Streamer, error) {
m.Lock()
defer m.Unlock()
// TODO: mock stream
return nil, nil
}
func (m *MockClient) Publish(ctx context.Context, p client.Publication, opts ...client.PublishOption) error {
return nil
}
func (m *MockClient) String() string {
return "mock"
}
func NewClient(opts ...client.Option) *MockClient {
options := client.Options{
Context: context.TODO(),
}
for _, opt := range opts {
opt(&options)
}
r, ok := fromContext(options.Context)
if !ok {
r = make(map[string][]MockResponse)
}
return &MockClient{
Client: client.DefaultClient,
Opts: options,
Response: r,
}
}

32
client/mock/mock_test.go Normal file
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package mock
import (
"testing"
"github.com/micro/go-micro/errors"
"golang.org/x/net/context"
)
func TestClient(t *testing.T) {
response := []MockResponse{
{Method: "Foo.Bar", Response: map[string]interface{}{"foo": "bar"}},
{Method: "Foo.Fail", Error: errors.InternalServerError("go.mock", "failed")},
}
c := NewClient(Response("go.mock", response))
for _, r := range response {
req := c.NewJsonRequest("go.mock", r.Method, map[string]interface{}{"foo": "bar"})
var rsp map[string]interface{}
err := c.Call(context.TODO(), req, &rsp)
if err != r.Error {
t.Fatalf("Expecter error %v got %v", r.Error, err)
}
t.Log(rsp)
}
}

17
client/mock/options.go Normal file
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package mock
import (
"github.com/micro/go-micro/client"
)
// Response sets the response methods for a service
func Response(service string, response []MockResponse) client.Option {
return func(o *client.Options) {
r, ok := fromContext(o.Context)
if !ok {
r = make(map[string][]MockResponse)
}
r[service] = response
o.Context = newContext(o.Context, r)
}
}