gomock，Go，芒果包装，MongoMock

Question

我试图使用gomock来模拟下面的方法

func GetS(tenantName string) (*mgo.Session, error) {
    ctx := apiContext.TContext{}
    url, err := connectionURLList.get(tenantName)
    if err != nil {
        log.GenericWarning(ctx,
            fmt.Sprintf("connection to %s not yet created, creating one: %v", tenantName, err), nil)
        if err := connectMongo(tenantName); err == nil {
            return GetS(tenantName) //singleton recursion to again call GetS
        }
        return nil, err
    }
    // ignoring error, expected we will always setting session in session map
    session, _ := connectionList.get(url)
    return session.Copy(), err
}

我的界面

type MongoManager interface {
    GetS(tenantName string) 
}

func TestGetS(t *testing.T) {
    //var mgoCall *mgo.Session
    mockCtrl := gomock.NewController(t)
    defer mockCtrl.Finish()
    mockManagerObj := mocks.NewMockMongoManager(mockCtrl)
    mockManagerObj.EXPECT().GetS("cacargroup").Return(nil)
}

我得到了下面的错误。有人能帮上忙吗

 $ go test

-失败: /Users/charles/workspace/src/bitbucket.org/tekion/tbaas/mongoManager/mongoManager_test.go:16 TestGetS (0.00s) mongoManager_test.go:20: TestGetS(0.00s)对*mocks.MockMongoManager.GetS的缺失调用(等于仙人掌组)*mocks.MockMongoManager.GetS mongoManager_test.go:20:由于缺少调用而中止测试

Answer 1

实际上，在您的接口中可以看到使用返回类型错误实现的方法。但是，您使用的方式就像它不返回任何内容一样，并将实现链接起来。只需删除返回类型的GetS。

type fn func(string) (*mgo.Session, error)

type MongoManager interface {
    NewFunction(GetS, "cascade")
}

func TestGetS(t *testing.T) {
    //var mgoCall *mgo.Session
    mockCtrl := gomock.NewController(t)
    defer mockCtrl.Finish()
    mockManagerObj := mocks.NewMockMongoManager(mockCtrl)
    mockManagerObj.EXPECT().GetS("cacargroup").Return(nil)
}

此外，您还必须将其从GetS函数中删除。

func NewFunction(GetS fn, value string){
   GetS("cascade")
}

func GetS(tenantName string) (*mgo.Session, error){
    ctx := apiContext.TContext{}
    url, err := connectionURLList.get(tenantName)
    if err != nil {
        log.GenericWarning(ctx,
            fmt.Sprintf("connection to %s not yet created, creating one: %v", tenantName, err), nil)
        if err := connectMongo(tenantName); err == nil {
            return GetS(tenantName) //singleton recursion to again call GetS
        }
        return nil, err
    }
    // ignoring error, expected we will always setting session in session map
    session, _ := connectionList.get(url)
}