First commit

.babelrc

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+  {
+  "presets": [
+    ["env", {
+      "targets": {
+        "node": 4
+      },
+    }]
+  ],
+  "plugins": [
+    "transform-object-rest-spread",
+    "transform-class-properties",
+    "transform-flow-strip-types"
+  ]
+}

.eslintignore

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+flow-typed

.eslintrc

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+{
+  "extends": [
+    "airbnb-base",
+    "prettier"
+  ],
+  "parser": "babel-eslint",
+  "rules": {
+    "no-underscore-dangle": 0,
+    "arrow-body-style": 0,
+    "no-unused-expressions": 0,
+    "no-plusplus": 0,
+    "no-console": 0,
+    "func-names": 0,
+    "comma-dangle": ["error", {
+      "arrays": "always-multiline",
+      "objects": "always-multiline",
+      "imports": "always-multiline",
+      "exports": "always-multiline",
+      "functions": "ignore",
+    }],
+    "prettier/prettier": ["error", {
+      "trailingComma": true,
+      "singleQuote": true,
+      "printWidth": 100
+    }]
+  },
+  "env": {
+    "jasmine": true,
+    "jest": true
+  },
+  "plugins": [
+    "flowtype",
+    "prettier"
+  ]
+}

.flowconfig

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+[ignore]
+.*/node_modules/.*
+
+[include]
+
+[libs]
+
+[options]

.gitignore

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+# Logs
+logs
+*.log
+npm-debug.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# IntelliJ Files
+*.iml
+*.ipr
+*.iws
+/out/
+.idea/
+.idea_modules/
+
+# Dependency directory
+node_modules
+
+# Optional npm cache directory
+.npm
+
+# Optional REPL history
+.node_repl_history
+
+# Transpiled code
+/es
+/lib
+
+coverage
+.nyc_output

.npmignore

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+.DS_Store
+*.log
+src
+flow-typed

.travis.yml

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+sudo: false
+language: node_js
+cache:
+  yarn: true
+  directories:
+    - node_modules
+notifications:
+  email: true
+node_js:
+  - "7"
+#  - "6"
+#  - "5"
+#  - "4"
+script:
+#  - yarn run coverage
+  - yarn run build
+after_success:
+  - 'curl -Lo travis_after_all.py https://git.io/travis_after_all'
+  - python travis_after_all.py
+  - export $(cat .to_export_back) &> /dev/null
+#  - if [[ "$TRAVIS_JOB_NUMBER" == *.1 && "$TRAVIS_BRANCH" == "master" && "$TRAVIS_PULL_REQUEST" == "false" ]]; then bash <(curl -s https://codecov.io/bash); fi
+  - if [[ "$TRAVIS_JOB_NUMBER" == *.1 && "$TRAVIS_BRANCH" == "master" && "$TRAVIS_PULL_REQUEST" == "false" ]]; then npm run semantic-release; fi
+branches:
+  except:
+    - /^v\d+\.\d+\.\d+$/

CHANGELOG.md

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+
+
+
+## 0.0.1 (May 11, 2017)
+- First commit

LICENSE.md

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+The MIT License (MIT)
+
+Copyright (c) 2017-present Pavel Chertorogov
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

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+# mongodb-memory-server
+
+[![NPM version](https://img.shields.io/npm/v/mongodb-memory-server.svg)](https://www.npmjs.com/package/mongodb-memory-server)
+[![Downloads stat](https://img.shields.io/npm/dt/mongodb-memory-server.svg)](http://www.npmtrends.com/mongodb-memory-server)
+[![Travis](https://img.shields.io/travis/nodkz/mongodb-memory-server.svg?maxAge=2592000)](https://travis-ci.org/nodkz/mongodb-memory-server)
+[![Commitizen friendly](https://img.shields.io/badge/commitizen-friendly-brightgreen.svg)](http://commitizen.github.io/cz-cli/)
+
+This package spins up a actual/real MongoDB Server programmatically from node for testing or mocking during development. By default it holds the data in memory. Fresh spinned up `mongod` process takes about 7Mb of memory. The server will allow you to connect your favorite ODM or client library to the MongoDB Server and run integration tests isolated from each other. You can start up several mongod simultaneously, it automatically discovers free ports.
+
+This package use [mongodb-prebuilt](https://github.com/winfinit/mongodb-prebuilt) which on first start downloads the latest MongoDB binaries and save it to `~/.mongodb-prebuilt` folder. So first run may take a time. All further runs will use downloaded version.
+
+## Installation
+```
+yarn add mongodb-memory-server --dev
+OR
+npm install mongodb-memory-server --save-dev
+```
+
+## Usage
+
+### Simple server start:
+```js
+import MongodbMemoryServer from 'mongodb-memory-server';
+
+const mongod = new MongoMemoryServer();
+
+const uri = await mongod.getConnectionString();
+const port = await mongod.getPort();
+const dbPath = await mongod.getDbPath();
+
+mongod.stop();
+```
+
+### Provide connection string to mongoose
+```js
+import mongoose from 'mongoose';
+import MongodbMemoryServer from 'mongodb-memory-server';
+
+const mongoServer = new MongoMemoryServer();
+
+mongoose.Promise = Promise;
+mongoServer.getConnectionString().then((mongoUri) => {
+  const mongooseOpts = {
+    server: {
+      auto_reconnect: true,
+      reconnectTries: Number.MAX_VALUE,
+      reconnectInterval: 1000,
+    },
+  };
+
+  mongoose.connect(mongoUri, mongooseOpts);
+
+  mongoose.connection.on('error', (e) => {
+    if (e.message.code === 'ETIMEDOUT') {
+      console.log(e);
+      mongoose.connect(mongoUri, mongooseOpts);
+    }
+    console.log(e);
+  });
+
+  mongoose.connection.once('open', () => {
+    console.log(`MongoDB successfully connected to ${mongoUri}`);
+  });
+});
+```
+For additional information I recommend you to read this article [Testing a GraphQL Server using Jest with Mongoose](https://medium.com/entria/testing-a-graphql-server-using-jest-4e00d0e4980e)
+
+
+### Several mongoose connections simultaneously
+```js
+import mongoose from 'mongoose';
+import MongodbMemoryServer from 'mongodb-memory-server';
+
+mongoose.Promise = Promise;
+
+const mongoServer1 = new MongoMemoryServer();
+const mongoServer2 = new MongoMemoryServer();
+
+const mongooseOpts = {
+  server: {
+    promiseLibrary = Promise;
+    auto_reconnect: true,
+    reconnectTries: Number.MAX_VALUE,
+    reconnectInterval: 1000,
+  },
+};
+
+function addEvents(connection, mongoUri) {
+  connection.on('error', (e) => {
+    if (e.message.code === 'ETIMEDOUT') {
+      console.log(e);
+      connect(mongoUri, mongooseOpts);
+    }
+    console.log(e);
+  });
+
+  connection.once('open', () => {
+    console.log(`MongoDB successfully connected to ${mongoUri}`);
+  });
+}
+
+// Firstly create connection objects, which you may import in other files and create mongoose models.
+// Connection to databases will be estimated later (after model creation).
+const connections = {
+  conn1: mongoose.createConnection(),
+  conn2: mongoose.createConnection(),
+  conn3: mongoose.createConnection(),
+};
+
+mongoServer1.getConnectionString('server1_db1').then((mongoUri) => {
+  connections.conn1.connect(mongoUri, mongooseOpts);
+  addEvents(connections.conn1, mongoUri);
+});
+
+mongoServer1.getConnectionString('server1_db2').then((mongoUri) => {
+  connections.conn2.connect(mongoUri, mongooseOpts);
+  addEvents(connections.conn2, mongoUri);
+});
+
+mongoServer2.getConnectionString('server2_db').then((mongoUri) => {
+  connections.conn3.connect(mongoUri, mongooseOpts);
+  addEvents(connections.conn3, mongoUri);
+});
+
+export default connections;
+
+
+// somewhere in other file
+import { Schema } from 'mongoose';
+import { conn1, conn2, conn3 } from './file_above';
+
+const userSchema = new Schema({
+  name: String,
+});
+
+const taskSchema = new Schema({
+  userId: String,
+  task: String,
+});
+
+export default {
+  User: conn1.model('user', userSchema),
+  Task: conn2.model('task', taskSchema),
+  UserOnServer2: conn3.model('user', userSchema),
+}
+```
+
+### Simple Mocha test example
+```js
+import mongoose from 'mongoose';
+import MongodbMemoryServer from 'mongodb-memory-server';
+
+before(function(done) {
+  const mongoServer = new MongodbMemoryServer();
+  mongoServer.getConnectionString().then((mongoUri) => {
+    mongoose.connect(mongoUri, function(err) {
+      done(err);
+    });
+  });
+});
+
+describe('...', function() {
+    it("...", function() {
+      // ...
+    });
+});
+
+```
+
+
+## Credits
+Inspired by alternative runners for [mongodb-prebuilt](https://github.com/winfinit/mongodb-prebuilt):
+- [mockgoose](https://github.com/mockgoose/Mockgoose)
+- [mongomem](https://github.com/CImrie/mongomem)
+
+## License
+
+MIT