MMDB

In-memory MongoDB Server written with pure golang to use in place of mongodb in your unit tests

Usage

Code

import (
	"fmt"
	"github.com/sankooc/mmdb/db"
	"context"
	"go.mongodb.org/mongo-driver/bson"
	"go.mongodb.org/mongo-driver/mongo"
)
func mockMongo() error {
	server, err := db.NewServerAddr(":22222", nil)
	if err != nil {
		return err
	}
	server.Start()
	fmt.Println("mongodb_started")

	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	client, err := mongo.Connect(ctx, options.Client().ApplyURI("mongodb://127.0.0.1:22222"))
	defer cancel()
	if err != nil {
		return err
	}
	collection := client.Database("test").Collection("usr")
	doc := bson.M{"name": "sankooc", "age": 30}
	_, err = collection.InsertOne(ctx, doc)
	if err != nil {
		return err
	}
	filter := bson.M{}
	err = collection.FindOne(ctx, filter).Decode(&doc)
	if err != nil {
		return err
	}
	fmt.Println(doc)
	return nil
}

Cli

package main

import (
	"github.com/sankooc/mmdb/db"
)

func main() {
	server, err := db.NewServerAddr(":22222", nil)
	if err != nil {
		panic(err)
	}
	server.Start()
	server.Wait()
}

connect witch mongo-cli

mongo --port 22222

Status

Collection Command

opt	-
insertOne	✔️
find	✔️
update	✔️
insert	✔️
deleteOne	✔️
insertMany	✔️
count	✔️
countDocuments	❌
findOne	✔️
deleteMany	❌
replaceOne	❌
findAndModify	❌
findOneAndReplace	❌
findOneAndUpdate	❌
save	❌
drop	❌
updateMany	❌
remove	❌
bulkWrite	❌
dropIndex	❌
getDB	❌
updateOne	❌
mapReduce	❌
getIndexKeys	❌
getWriteConcern	❌
stats	❌
convertToSingleObject	❌
estimatedDocumentCount	❌
getIndexSpecs	❌
storageSize	❌
exists	❌
getIndexes	❌
explain	❌
getIndices	❌
createIndex	❌
hideIndex	❌
renameCollection	❌
createIndexes	❌
getName	❌
initializeOrderedBulkOp	❌
totalIndexSize	❌
dataSize	❌
getPlanCache	❌
totalSize	❌
findOneAndDelete	❌
getQueryOptions	❌
aggregate	❌

Update Operators

opt	-
$set	✔️
$unset	✔️
$setOnInsert	❌
$inc	❌
$min	❌
$max	❌
$mul	❌
$rename	❌
$currentDate	❌

Query Operators

opt	-
$eq	❌
$gt	❌
$lt	❌
$gte	❌
$lte	❌
$exists	❌