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Mongo2Go - MongoDB for .NET integration tests

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Mongo2Go - MongoDB for integration tests & local debugging
========

![Logo](https://raw.githubusercontent.com/Mongo2Go/Mongo2Go/main/src/mongo2go_200_200.png)

[![NuGet](https://img.shields.io/nuget/v/Mongo2Go.svg?label=NuGet&logo=NuGet)](https://www.nuget.org/packages/Mongo2Go/)

Mongo2Go is a managed wrapper around MongoDB binaries.
It targets **.NET Framework 4.7.2** and **.NET Standard 2.1.** and works with Windows, Linux and macOS.
This Nuget package contains the executables of _mongod_, _mongoimport_ and _mongoexport_ **for Windows, Linux and macOS** .

__Brought to you by [Johannes Hoppe](https://twitter.com/johanneshoppe) with the help of many ❤️ contributors!__

Mongo2Go has two use cases:

1. Providing multiple, temporary and isolated MongoDB databases for integration tests
2. Providing a quick to set up MongoDB database for a local developer environment

Integration test
-------------------------------------
With each call of the static method **MongoDbRunner.Start()** a new MongoDB instance will be set up.
A free port will be used (starting with port 27018) and a corresponding data directory will be created.
The method returns an instance of MongoDbRunner, which implements IDisposable.
As soon as the MongoDbRunner is disposed (or if the Finalizer is called by the GC),
the wrapped MongoDB process will be killed and all data in the data directory will be deleted.

Local debugging
------------------------
In this mode a single MongoDB instance will be started on the default port (27017).
No data will be deleted and the MongoDB instance won’t be killed automatically.
Multiple calls to **MongoDbRunner.StartForDebugging()** will return an instance with the State “AlreadyRunning”.
You can ignore the IDisposable interface, as it won’t have any effect.
**I highly recommend to not use this mode on productive machines!**
Here you should set up a MongoDB as it is described in the manual.
For you convenience the MongoDbRunner also exposes _mongoexport_ and _mongoimport_
which allow you to quickly set up a working environment.

Single server replica set mode to enable transactions 
-------------------------
`MongoDbRunner.Start()` can be set up to take in an optional boolean parameter called `singleNodeReplSet`.
When passed in with the value `true` - (**`MongoDbRunner.Start(singleNodeReplSet: true)`**)
- a single node mongod instance will be started as a replica set with the name `singleNodeReplSet`.
Replica set mode is required for transactions to work in MongoDB 4.0 or greater

Replica set initialization requires the use of a short delay to allow for the replica set to stabilize. This delay is linked to a timeout value of 5 seconds.

If the timeout expires before the replica set has stabilized a `TimeoutException` will be thrown.

The default timeout can be changed through the optional parameter `singleNodeReplSetWaitTimeout`, which allows values between 0 and 65535 seconds: **`MongoDbRunner.Start(singleNodeReplSet: true, singleNodeReplSetWaitTimeout: 10)`**

Additional mongod arguments
---------------------------
`MongoDbRunner.Start()` can be set up to consume additional `mongod` arguments. This can be done using the string parameter called `additionalMongodArguments`.

The list of additional arguments cannot contain arguments already defined internally by Mongo2Go. An `ArgumentException` will be thrown in this case, specifying which additional arguments are required to be discarded.

Example of usage of the additional `mongod` arguments: **`MongoDbRunner.Start(additionalMongodArguments: "--quiet")`**

Installation
--------------
The Mongo2Go Nuget package can be found at [https://nuget.org/packages/Mongo2Go/](https://nuget.org/packages/Mongo2Go/)
To install it via the .NET CLI, simply enter:

```sh
dotnet add package Mongo2Go
```

* The new 4.x and 5.x branches target __.NET Framework 4.7.2__ and __.NET Standard 2.1__. Please use the latest version if possible. 
* The old 3.x branch targets __.NET Standard 2.0__. No new features will be added, only bugfixes might be made.
* The old 2.x branch targets __.NET Standard 1.6__. No new features will be added, only bugfixes might be made.
* The old 1.x branch targets good-old classic __.NET 4.6.1__. This is for legacy environments only. No changes will be made.

Examples
--------

**Example: Integration Test (here: Machine.Specifications & Fluent Assertions)**

```c#
[Subject("Runner Integration Test")]
public class when_using_the_inbuild_serialization : MongoIntegrationTest
{
    static TestDocument findResult;
    
    Establish context = () =>
        {
            CreateConnection();
            _collection.Insert(TestDocument.DummyData1());
        };

Because of = () => findResult = _collection.FindOneAs<TestDocument>();

It should_return_a_result = () => findResult.ShouldNotBeNull();
    It should_hava_expected_data = () => findResult.ShouldHave().AllPropertiesBut(d => d.Id).EqualTo(TestDocument.DummyData1());

Cleanup stuff = () => _runner.Dispose();
}

public class MongoIntegrationTest
{
 internal static MongoDbRunner _runner;
 internal static MongoCollection<TestDocument> _collection;

internal static void CreateConnection()
 {
 _runner = MongoDbRunner.Start();
 
 MongoClient client = new MongoClient(_runner.ConnectionString);
 MongoDatabase database = client.GetDatabase("IntegrationTest");
 _collection = database.GetCollection<TestDocument>("TestCollection");
 }
} 
```

More tests can be found at https://github.com/Mongo2Go/Mongo2Go/tree/master/src/Mongo2GoTests/Runner

**Example: Exporting seed data**

```c#
using (MongoDbRunner runner = MongoDbRunner.StartForDebugging()) {

runner.Export("TestDatabase", "TestCollection", @"..\..\App_Data\test.json");
}
```

**Example: Importing for local debugging (compatible with ASP.NET MVC 4 Web API as well as ASP.NET Core)**

```c#
public class WebApiApplication : System.Web.HttpApplication
{
    private MongoDbRunner _runner;

protected void Application_Start()
    {
        _runner = MongoDbRunner.StartForDebugging();
        _runner.Import("TestDatabase", "TestCollection", @"..\..\App_Data\test.json", true);

MongoClient client = new MongoClient(_runner.ConnectionString);
 MongoDatabase database = client.GetDatabase("TestDatabase");
 MongoCollection<TestObject> collection = database.GetCollection<TestObject>("TestCollection");

/* happy coding! */
    }

protected void Application_End()
    {
        _runner.Dispose();
    }
}
```

**Example: Transactions (New feature since v2.2.8)**

<details>
 <summary>Full integration test with transaction handling (click to show)</summary>

```c#
 public class when_transaction_completes : MongoTransactionTest
    {
        private static TestDocument mainDocument;
        private static TestDocument dependentDocument;
        Establish context = () =>

{
 _runner = MongoDbRunner.Start(singleNodeReplSet: true);
 client = new MongoClient(_runner.ConnectionString);
 database = client.GetDatabase(_databaseName);
 _mainCollection = database.GetCollection<TestDocument>(_mainCollectionName);
 _dependentCollection = database.GetCollection<TestDocument>(_dependentCollectionName);
 _mainCollection.InsertOne(TestDocument.DummyData2());
 _dependentCollection.InsertOne(TestDocument.DummyData2());
 };

private Because of = () =>
 {
 var filter = Builders<TestDocument>.Filter.Where(x => x.IntTest == 23);
 var update = Builders<TestDocument>.Update.Inc(i => i.IntTest, 10);

using (var sessionHandle = client.StartSession())
 {
 try
 {
 var i = 0;
 while (i < 10)
 {
 try
 {
 i++;
 sessionHandle.StartTransaction(new TransactionOptions(
 readConcern: ReadConcern.Local,
 writeConcern: WriteConcern.W1)); 
 try
 {
 var first = _mainCollection.UpdateOne(sessionHandle, filter, update);
 var second = _dependentCollection.UpdateOne(sessionHandle, filter, update);
 }
 catch (Exception e)
 {
 sessionHandle.AbortTransaction();
 throw;
 }

mainDocument = _mainCollection.FindSync(Builders<TestDocument>.Filter.Empty).FirstOrDefault();
 dependentDocument = _dependentCollection.FindSync(Builders<TestDocument>.Filter.Empty).FirstOrDefault();
 };
 
 It main_should_be_33 = () => mainDocument.IntTest.Should().Be(33);
 It dependent_should_be_33 = () => dependentDocument.IntTest.Should().Be(33);
 Cleanup cleanup = () => _runner.Dispose();
 }

```
</details>

**Example: Logging with `ILogger`**
<details>
 <summary>Wire mongod's logs at info and above levels to a custom `ILogger` (click to show)</summary>

```c#
public class MongoIntegrationTest
{
    internal static MongoDbRunner _runner;

internal static void CreateConnection()
 {
 // Create a custom logger. 
 // Replace this code with your own configuration of an ILogger.
 var provider = new ServiceCollection()
 .AddLogging(config =>
 {
 // Log to a simple console and to event logs.
 config.AddSimpleConsole();
 config.AddEventLog();
 })
 .BuildServiceProvider();
 var logger = provider.GetSerivce<ILoggerFactory>().CreateLogger("Mongo2Go");

_runner = MongoDbRunner.Start(logger: logger);
 }
} 
```
</details>

<details>
 <summary>Wire mongod's logs at debug levels to a custom `ILogger` (click to show)</summary>

```c#
public class MongoIntegrationTest
{
    internal static MongoDbRunner _runner;

internal static void CreateConnection()
    {
        // Create a custom logger. 
        // Replace this code with your own configuration of an ILogger.
        var provider = new ServiceCollection()
            .AddLogging(config =>
            {
                // Mongod's D1-D2 levels are logged with Debug level.
                // D3-D5 levels are logged with Trace level.
                config.SetMinimumLevel(LogLevel.Trace);

// Log to System.Diagnostics.Debug and to the event source.
 config.AddDebug();
 config.AddEventSourceLogger();
 })
 .BuildServiceProvider();
 var logger = provider.GetSerivce<ILoggerFactory>().CreateLogger("Mongo2Go");

_runner = MongoDbRunner.Start(
 additionalMongodArguments: "vvvvv", // Tell mongod to output its D5 level logs
 logger: logger);
 }
} 
```
</details>

Bundled MongoDB binaries & licenses
-------------------------------------

This package redistributes the official MongoDB binaries, unmodified except for symbol stripping (to keep the
package small) and, on Apple Silicon, an ad-hoc code signature so the stripped binary will run. To keep the
package under the 250 MiB nuget.org limit, only the three executables are bundled — the upstream license and
notice files are not, so their terms are reproduced here by reference:

- **MongoDB Community Server** (`mongod`) — [Server Side Public License (SSPL) v1](https://www.mongodb.com/licensing/server-side-public-license). © MongoDB, Inc.
- **MongoDB Database Tools** (`mongoimport`, `mongoexport`) — [Apache License 2.0](https://github.com/mongodb/mongo-tools/blob/master/LICENSE.md). © MongoDB, Inc.

Mongo2Go itself is [MIT-licensed](LICENSE); the licenses above apply only to the bundled MongoDB binaries.

Changelog
-------------------------------------

### Mongo2Go 5.0.0, July 21 2026

- **BREAKING — MongoDB upgraded from 4.4.4 to 8.0.26** (the 8.0 LTS line), and the MongoDB Database Tools from 100.3.1 to 100.14.0 (fixes [#132](https://github.com/Mongo2Go/Mongo2Go/issues/132)). This is why the major version is bumped: MongoDB 8.0 raises the minimum operating-system requirements for consumers. In particular the Linux binaries need **glibc 2.35 or newer** (Ubuntu 22.04+, Debian 12+, RHEL 9+, Amazon Linux 2023+) — these builds link OpenSSL 3, which is what removes the old `libcrypto.so.1.1`/`libssl.so.1.1` dependency. See [MongoDB's platform support matrix](https://www.mongodb.com/docs/manual/administration/production-notes/#platform-support) for the exact supported versions of each OS.
- **NEW: native macOS arm64 (Apple Silicon)** — the package now bundles a native `mongod`/`mongoimport`/`mongoexport` for Apple Silicon, so there is **no more Rosetta 2**. Together with the Linux arm64 support added in 4.2.0 this completes [#127](https://github.com/Mongo2Go/Mongo2Go/issues/127). Intel macs continue to use the x64 binaries. Bundled platforms are now: Windows x64, Linux x64 & arm64, macOS x64 & arm64.
- **`libcrypto.so.1.1` is no longer required** — MongoDB 8.x links OpenSSL 3, which ships on all currently supported Linux distributions. The `libssl1.1` workaround previously needed on Ubuntu 22.04+ is gone, which fixes running on modern Ubuntu and in `dotnet/sdk` containers ([#149](https://github.com/Mongo2Go/Mongo2Go/issues/149)) and on GitLab CI ([#135](https://github.com/Mongo2Go/Mongo2Go/issues/135)).
- **Fixed "too many open files"** ([#147](https://github.com/Mongo2Go/Mongo2Go/issues/147)) — process handles for `chmod`, `mongoimport`/`mongoexport` and the replica-set initialisation client were not being disposed, leaking file descriptors on every runner start and every import/export. They are now released deterministically.
- **Strong-named assembly** — `Mongo2Go.dll` is now strong-named, so it can be referenced from strong-named / signed consumer projects (fixes [#150](https://github.com/Mongo2Go/Mongo2Go/issues/150)).
- Internal: the `MongoDownloader` tool can now pin an exact MongoDB server and tools version (so a release is reproducible), strips and — on Apple Silicon — re-signs binaries with a bounded memory footprint, and regenerates the runtime checksum manifest automatically.

### Mongo2Go 4.2.0, July 21 2026

- **NEW: Linux ARM64 support** — the package now bundles native `mongod`, `mongoimport` and `mongoexport` for Linux arm64 in addition to the existing x64 binaries. Binary resolution is now architecture-aware, so the correct build is selected automatically (fixes [#127](https://github.com/Mongo2Go/Mongo2Go/issues/127)). On Apple Silicon the x64 macOS binaries continue to run under Rosetta 2, since MongoDB 4.4 has no macOS arm64 build.
- Updated all NuGet dependencies, most notably **MongoDB.Driver** from 3.1.0 to 3.9.0. This resolves the vulnerable transitive dependencies (SharpCompress, Snappier) reported in [#160](https://github.com/Mongo2Go/Mongo2Go/issues/160) (PR [#159](https://github.com/Mongo2Go/Mongo2Go/pull/159) — many thanks to [Simon Schmid](https://github.com/schms27)).
- **Smaller package**: the bundled MongoDB binaries are now stripped, reducing the package by roughly 22%. Even with the added arm64 binaries the package is smaller than before.
- Internal: the `MongoDownloader` tool now verifies every downloaded archive against MongoDB's published SHA-256 before extraction, and the bundled binaries are verified against a committed checksum manifest at runtime. This strengthens the supply-chain guarantees of the package.
- Please note that the bundled version of MongoDB included with this package remains **v4.4.4**.

### Mongo2Go 4.1.0, January 30 2025

- Updated **MongoDB.Driver** to version **3.1.0**, ensuring compatibility with the latest MongoDB client features (PR [#156](https://github.com/Mongo2Go/Mongo2Go/pull/156), fixes [#154](https://github.com/Mongo2Go/Mongo2Go/issues/154) - many thanks to [Teneko](https://github.com/teneko))  
- Please note that the bundled version of MongoDB included with this package remains **v4.4.4**. 
- **Note for Ubuntu users**: MongoDB 4.4.4 requires **libcrypto.so.1.1**, which is no longer included in Ubuntu 22.04 and newer. If you encounter an error like:  
  ```
  error while loading shared libraries: libcrypto.so.1.1: cannot open shared object file: No such file or directory
  ```
  You can fix this by installing OpenSSL 1.1 manually:  
  ```bash
  echo "deb http://security.ubuntu.com/ubuntu focal-security main" | sudo tee /etc/apt/sources.list.d/focal-security.list
  sudo apt update
  sudo apt install -y libssl1.1
  ```
  This restores `libcrypto.so.1.1` and allows Mongo2Go/MongoDB to run properly.

### Mongo2Go 4.0.0, November 19 2024

- A big thank you to [DrewM-Hax0r](https://github.com/DrewM-Hax0r) for championing this release! (PR [#153](https://github.com/Mongo2Go/Mongo2Go/pull/153), fixes [#152](https://github.com/Mongo2Go/Mongo2Go/issues/152))
- This is a new major version for Mongo2Go (4.x), driven by:
  - Dropping support for old .NET Framework versions earlier than 4.7.2 due to updated framework targets.
  - MongoDB driver switching to strong-named assemblies (see [.NET Driver Version 2.28.0 Release Notes](https://www.mongodb.com/community/forums/t/net-driver-2-28-0-released/289745)).
- Updated **MongoDB driver to version 3** and re-targeted the project to meet the requirements of the new driver version.
- Fixed an issue with the single-node replica set option, caused by outdated connection strings that were incompatible with the latest MongoDB driver.
- Replaced deprecated dependent packages with updated, supported versions, and patched vulnerabilities by upgrading vulnerable dependencies.
- Please note that the bundled version of MongoDB included with this package has not changed and is still **v4.4.4**. This version of MongoDB is still compatible with the latest version of the driver, so there was no need to update at this time.
- **Bugfix:** Corrected binary search path on Linux when `NUGET_PACKAGES` is specified (PR [#140](https://github.com/Mongo2Go/Mongo2Go/pull/140), fixes [#134](https://github.com/Mongo2Go/Mongo2Go/issues/134) - many thanks to [Ove Andersen](https://github.com/azzlack))
- **Bugfix**: Stops extra empty temporary data being generated (PR [#138](https://github.com/Mongo2Go/Mongo2Go/pull/138), fixes [#136](https://github.com/Mongo2Go/Mongo2Go/issues/136) - many thanks to [Alex Wardle](https://github.com/awardle))

<details>
 <summary>Changelog v3.0.0 to 3.1.3 (click to show)</summary>

### Mongo2Go 3.1.3, April 30 2021

* targeting .NET Standard 2.0 instead of 2.1, this makes Mongo2Go compatible with .NET Framework (version 4.7.1 and later) (PR [#118](https://github.com/Mongo2Go/Mongo2Go/pull/118) - many thanks to [Cédric Luthi](https://github.com/0xced))
* fixes handling of the path search for the NUGET_PACKAGE environment variable (PR [#119](https://github.com/Mongo2Go/Mongo2Go/pull/119) - many thanks to [Timm Hoffmeister](https://github.com/vader1986))
* internal: `dotnet pack` is now used to create the nupkg file for a release (PR [#121](https://github.com/Mongo2Go/Mongo2Go/pull/121) - many thanks to [Cédric Luthi](https://github.com/0xced))

### Mongo2Go 3.1.1, April 08 2021

* internal: Better algorithm for determining a free port. This allows parallel execution of tests and increases compatibility with Raider and other test runners. (PR [#116](https://github.com/Mongo2Go/Mongo2Go/pull/116), fixes [#115](https://github.com/Mongo2Go/Mongo2Go/issues/115) and [#106](https://github.com/Mongo2Go/Mongo2Go/issues/106) - many thanks to [liangshiwei](https://github.com/realLiangshiwei))

### Mongo2Go 3.1.0, April 07 2021

* **NEW: Configurable logging!** adds the option to inject a `Microsoft.Extensions.Logging.ILogger` to `MongoDbRunner.Start(logger)` arguments. Now you can adjust or disable the console output to avoid noise in CI environments. Please note the two examples shown above. (PR [#113](https://github.com/Mongo2Go/Mongo2Go/pull/113), fixes [#94](https://github.com/Mongo2Go/Mongo2Go/issues/94), [#95](https://github.com/Mongo2Go/Mongo2Go/issues/95) and [#113](https://github.com/Mongo2Go/Mongo2Go/issues/113) - many thanks to [Corentin Altepe](https://github.com/corentinaltepe))
* internal: replaces `--sslMode disabled` (deprecated) with `--tlsMode disabled` in command line arguments to mongod.

### Mongo2Go 3.0.0, March 26 2021

* includes MongoDB binaries of **version 4.4.4** with support for Windows, Linux and macOS
* targets **.NET Standard 2.1** (can be used with .NET Core 3.0 and .NET 5.0)

* adds new MongoDownloader tool (PR [#109](https://github.com/Mongo2Go/Mongo2Go/pull/109), fixes [#82](https://github.com/Mongo2Go/Mongo2Go/issues/82) and [#112](https://github.com/Mongo2Go/Mongo2Go/issues/112) - many thanks to [Cédric Luthi](https://github.com/0xced))
* adds support for `NUGET_PACKAGES` environment variable (PR [#110](https://github.com/Mongo2Go/Mongo2Go/pull/110) - many thanks to [Bastian Eicher](https://github.com/bastianeicher))

</details>

<details>
 <summary>Changelog v2.0.0-alpha1 to v2.2.16 (click to show)</summary>

### Mongo2Go 2.2.16, December 13 2020

* fix for non existing starting path for binary search (PR [#107](https://github.com/Mongo2Go/Mongo2Go/pull/107), fixes [#105](https://github.com/Mongo2Go/Mongo2Go/issues/105) - many thanks to [Gurov Yury](https://github.com/kenoma))

### Mongo2Go 2.2.15, December 12 2020

* throw exception if cluster is not ready for transactions after `singleNodeReplSetWaitTimeout` (PR [#103](https://github.com/Mongo2Go/Mongo2Go/pull/103) - many thanks for the continued support by [José Mira](https://github.com/zmira))
s
### Mongo2Go 2.2.14, October 17 2020

* fixes a bug with pulling mongo binaries from wrong version (PR [#87](https://github.com/Mongo2Go/Mongo2Go/pull/87), fixes [#86](https://github.com/Mongo2Go/Mongo2Go/issues/86) - many thanks to [mihevc](https://github.com/mihevc))
* ensures transaction is ready (solves error message: `System.NotSupportedException : StartTransaction cannot determine if transactions are supported because there are no connected servers.`) (PR [#101](https://github.com/Mongo2Go/Mongo2Go/pull/101), fixes [#89](https://github.com/Mongo2Go/Mongo2Go/issues/89), [#91](https://github.com/Mongo2Go/Mongo2Go/issues/91) and [#100](https://github.com/Mongo2Go/Mongo2Go/issues/100) - many thanks to [liangshiwei](https://github.com/realLiangshiwei))

### Mongo2Go 2.2.12, September 07 2019
* performance: waits for replica set ready log message, or throws if timeout expires, instead of using `Thread.Sleep(5000)` (PR [#83](https://github.com/Mongo2Go/Mongo2Go/pull/83), fixes [#80](https://github.com/Mongo2Go/Mongo2Go/issues/80) - many thanks again to [José Mira](https://github.com/zmira))

### Mongo2Go 2.2.11, May 10 2019
* allows additional custom MongoDB arguments (PR [#69](https://github.com/Mongo2Go/Mongo2Go/pull/69), fixes [#68](https://github.com/Mongo2Go/Mongo2Go/issues/68) - many thanks to [José Mira](https://github.com/zmira))
* adds option to set port for `StartForDebugging()` (PR [#72](https://github.com/Mongo2Go/Mongo2Go/pull/72), fixes [#71](https://github.com/Mongo2Go/Mongo2Go/issues/71) - many thanks to [Danny Bies](https://github.com/dannyBies))

### Mongo2Go 2.2.9, February 04 2019
* fixes a file path issue on Linux if you run on an SDK version beyond .NET Standard 1.6 (PR [#63](https://github.com/Mongo2Go/Mongo2Go/pull/63), fixes [#62](https://github.com/Mongo2Go/Mongo2Go/issues/62) and [#61](https://github.com/Mongo2Go/Mongo2Go/issues/61)) - many thanks to [Jeroen Vannevel](https://github.com/Vannevelj))
* continuous integration runs on Linux (Travis CI) and Windows (AppVeyor) now

### Mongo2Go 2.2.8, October 12 2018
* updated MongoDB binaries to 4.0.2 to support tests leveraging transaction across different collections and databases
* updated MongoDB C# driver to 2.7.0 to be compatible with MongoDB 4.0
* adds `singleNodeReplSet` paramter to `MongoDbRunner.Start` which allows mongod instance to be started as a replica set to enable transaction support (PR [#57](https://github.com/Mongo2Go/Mongo2Go/pull/57) - many thanks to [Mahi Satyanarayana](https://github.com/gbackmania))
* fixes port lookup for UnixPortWatcher (PR [#58](https://github.com/Mongo2Go/Mongo2Go/pull/58) - many thanks to [Viktor Kolybaba](https://github.com/VikKol))

### Mongo2Go 2.2.7, August 13 2018
* updates the `MongoBinaryLocator` to look for binaries in the nuget cache if they are not found in the project directory.
    * this will make Mongo2Go compatible with projects using the nuget `PackageReference` option. (PR [#56](https://github.com/Mongo2Go/Mongo2Go/pull/56), fixes [#39](https://github.com/Mongo2Go/Mongo2Go/issues/39) and [#55](https://github.com/Mongo2Go/Mongo2Go/issues/55))
* adds the `binariesSearchDirectory` parameter to `MongoDbRunner.Start` which allows an additional binaries search directory to be provided.
    * this will make the db runner more flexible if someone decides to use it in some unpredictable way.
* many thanks to [Nicholas Markkula](https://github.com/nickmkk)

### Mongo2Go 2.2.6, July 20 2018
* fixes broken linux support (fixes [#47](https://github.com/Mongo2Go/Mongo2Go/issues/47))

### Mongo2Go 2.2.5, July 19 2018
* fixes unresponsive process issue (PR [#52](https://github.com/Mongo2Go/Mongo2Go/pull/52), fixes [#49](https://github.com/Mongo2Go/Mongo2Go/issues/49))
* many thanks to [narendrachava](https://github.com/narendrachava)

### Mongo2Go 2.2.4, June 06 2018
* better support for TeamCity: removed MaxLevelOfRecursion limitation when searching for MongoDb binaries (PR [#50](https://github.com/Mongo2Go/Mongo2Go/pull/50), fixes [#39](https://github.com/Mongo2Go/Mongo2Go/issues/39))
* many thanks to [Stanko Culaja](https://github.com/culaja)

### Mongo2Go 2.2.2, June 05 2018
* includes mongod, mongoimport and mongoexport v3.6.1 for Windows, Linux and macOS via PR [#46](https://github.com/Mongo2Go/Mongo2Go/pull/46), which fixes [#45](https://github.com/Mongo2Go/Mongo2Go/issues/45)
* many thanks to [Joe Chan](https://github.com/joehmchan)

### Mongo2Go 2.2.1, November 23 2017
* no MongoDB binaries changed, still .NET Standard 1.6
* feature: uses temporary directory instead of good-old windows style `C:\data\db` by default (PR [#42](https://github.com/Mongo2Go/Mongo2Go/pull/42)) - `MongoDbRunner.Start()` and `MongoDbRunner.StartForDebugging()` will now work without any extra parameters for Linux/macOS
* bugfix: runs again on Linux/macOS, by making the binaries executable (PR [#42](https://github.com/Mongo2Go/Mongo2Go/pull/42), which fixes [#37](https://github.com/Mongo2Go/Mongo2Go/issues/37) and might also fix [#43](https://github.com/Mongo2Go/Mongo2Go/issues/43))
* internal: Unit Tests are running again (PR [#44](https://github.com/Mongo2Go/Mongo2Go/pull/44), which fixes [#31](https://github.com/Mongo2Go/Mongo2Go/issues/31), [#40](https://github.com/Mongo2Go/Mongo2Go/issues/40))
* internal: No hardcoded path passed to MongoDbRunner constructor (fixes [41](https://github.com/Mongo2Go/Mongo2Go/issues/41))
* many thanks to [Per Liedman](https://github.com/perliedman)

### Mongo2Go 2.2.0, August 17 2017
* includes mongod, mongoimport and mongoexport v3.4.7 for Windows, Linux and macOS
* targets .NET Standard 1.6 (can be used with .NET Core 1.0 / 1.1 / 2.0)
* many thanks to [Aviram Fireberger](https://github.com/avrum)

### Mongo2Go 2.1.0, March 10 2017
* skips v2.0 to have same numbers as v1.x.
* no MongoDB binaries changed since 2.0.0-alpha1 (still MongoDB v3.2.7 for Windows, Linux and macOS)
* targets .NET Standard 1.6 (can be used with .NET Core 1.0 / 1.1)
* bugfix: prevent windows firewall popup (PR [#30](https://github.com/Mongo2Go/Mongo2Go/pull/30), which fixes [#21](https://github.com/Mongo2Go/Mongo2Go/pull/21))
* many thanks to [kubal5003](https://github.com/kubal5003)

### Mongo2Go 1.1.0, March 10 2017 _(legacy branch!)_
* no MongoDB binaries changed since v1.0 (still MongoDB v3.2.7 for Windows, Linux and macOS)
* targets .NET 4.6.1
* bugfix: prevent windows firewall popup (PR [#29](https://github.com/Mongo2Go/Mongo2Go/pull/29), which fixes [#21](https://github.com/Mongo2Go/Mongo2Go/pull/21))
* many thanks to [kubal5003](https://github.com/kubal5003)

### Mongo2Go 2.0.0-alpha1, December 19 2016
* this version has no support for .NET Framework 4.6, please continue to use the stable package v.1.0.0
* NEW: first support of .NET Standard 1.6 ([#25](https://github.com/Mongo2Go/Mongo2Go/pull/25))
    * many thanks to [Hassaan Ahmed](https://github.com/bannerflow-hassaan)    
	* see the [Wiki](https://github.com/Mongo2Go/Mongo2Go/wiki/NetStandard) for more information about .NET Core 1.0 / .NET Standard 1.6

</details>

<details>
 <summary>Changelog v0.1.0 to v1.0.0 (click to show)</summary>

### Mongo2Go 1.0.0, November 14 2016
* v1.0 finally marked as stable
* no changes to 1.0.0-beta4
* changes since last stable version (0.2):
	* includes mongod, mongoimport and mongoexport v3.2.7 for Windows, Linux and macOS
	* support for Windows, Linux and macOS
	* uses MongoDB.Driver 2.3.0
	* **requires .NET 4.6**
	* various small bugfixes and improvements

### Mongo2Go 1.0.0-beta4, October 24 2016
* update to MongoDB.Driver 2.3.0 ([#23](https://github.com/Mongo2Go/Mongo2Go/pull/23))
* upgraded to __.NET 4.6__
* internal change: update MSpec as well and add MSTest Adapter for MSpec (ReSharper console runner doesn't support 4.6)
* many thanks to [Alexander Zeitler](https://github.com/AlexZeitler)
* please report any kind of [issues here on github](https://github.com/Mongo2Go/Mongo2Go/issues) so that we can mark 1.0.0 as stable!

### Mongo2Go 1.0.0-beta3, August 22 2016
* feature: process windows are hidden now ([#20](https://github.com/Mongo2Go/Mongo2Go/pull/20))
* bugfix: random folders are used for storing databases ([#18](https://github.com/Mongo2Go/Mongo2Go/pull/18))
* many thanks to [Matt Kocaj](https://github.com/cottsak)
* please report any kind of [issues here on github](https://github.com/Mongo2Go/Mongo2Go/issues) so that we can mark 1.0.0 as stable!

### Mongo2Go 1.0.0-beta2, July 29 2016
* fixes for bugs that were introduced by the big rewrite for cross-platform support
* changes from pull request [#14](https://github.com/Mongo2Go/Mongo2Go/pull/14), which fixes [#12](https://github.com/Mongo2Go/Mongo2Go/issues/12), [#13](https://github.com/Mongo2Go/Mongo2Go/issues/13) and [#15](https://github.com/Mongo2Go/Mongo2Go/issues/15), many thanks to [Mitch Ferrer](https://github.com/G3N7)
* please report any kind of [issues here on github](https://github.com/Mongo2Go/Mongo2Go/issues) so that we can mark 1.0.0 as stable!

### Mongo2Go 1.0.0-beta, July 24 2016
* **:tada: NEW: support for Linux and macOS :tada:**
* many thanks to [Kristofer Linnestjerna](https://github.com/krippz) from [netclean.com](http://www.netclean.com/) for the new cross-platform support
* includes mongod, mongoimport and mongoexport v3.2.7 for Windows, Linux and macOS
* changes from pull request [#8](https://github.com/Mongo2Go/Mongo2Go/pull/8), [#10](https://github.com/Mongo2Go/Mongo2Go/pull/10), [#11](https://github.com/Mongo2Go/Mongo2Go/pull/11) which fixes [#9](https://github.com/Mongo2Go/Mongo2Go/issues/9)
* please report any kind of [issues here on github](https://github.com/Mongo2Go/Mongo2Go/issues) so that we can mark 1.0.0 as stable!

### Mongo2Go 0.2, May 30 2016
* includes mongod, mongoimport and mongoexport v3.2.6,   
  (**64bit** from [win32/mongodb-win32-x86_64-2008plus-3.2.6.zip](http://downloads.mongodb.org/win32/mongodb-win32-x86_64-2008plus-3.2.6.zip?_ga=1.190428203.1815541971.1457905247) since 32bit builds are deprecated now)
* removes outmoded Strong-Name signing from assemblies (please open an issue if you really need this, see also [mspec#190](https://github.com/machine/machine.specifications/issues/190))
* changes from pull request [#7](https://github.com/Mongo2Go/Mongo2Go/pull/7), thanks to [Mitch Ferrer](https://github.com/G3N7)

### Mongo2Go 0.1.8, March 13 2016
* includes mongod, mongoimport and mongoexport v3.0.10 (32bit)
* changes from pull request [#5](https://github.com/Mongo2Go/Mongo2Go/pull/5), thanks to [Aristarkh Zagorodnikov](https://github.com/onyxmaster)

### Mongo2Go 0.1.6, July 21 2015
* includes mongod, mongoimport and mongoexport v3.0.4 (32bit)
* bug fix [#4](https://github.com/Mongo2Go/Mongo2Go/issues/4):  
Sometimes the runner tries to delete the database directory before the mongod process has been stopped, this throws an IOException. 
Now the runner waits until the mongod process has been stopped before the database directory will be deleted.  
* Thanks [Sergey Zwezdin](https://github.com/sergun)

### Mongo2Go 0.1.5, July 08 2015
* includes mongod, mongoimport and mongoexport v2.6.6 (32bit)
* changes from pull request [#3](https://github.com/Mongo2Go/Mongo2Go/pull/3)
* new: `Start` and `StartForDebugging` methods accept an optional parameter to specify a different data directory (default is "C:\data\db")
* many thanks to [Marc](https://github.com/Silv3rcircl3)

### Mongo2Go 0.1.4, January 26 2015
* includes mongod, mongoimport and mongoexport v2.6.6 (32bit)
* changes from pull request [#2](https://github.com/Mongo2Go/Mongo2Go/pull/2)
* internal updates for testing the package (not part of the release)
    * updated MSpec package so that it would work with the latest VS and R# test runner
    * updated Mongo C# Driver, Fluent Assertions, and Moq packages to latest versions
    * fixed date handling for mongoimport and mongoexport to pass tests
* many thanks to [Jesse Sweetland](https://github.com/sweetlandj)

### Mongo2Go 0.1.3, September 20 2012
* includes mongod, mongoimport and mongoexport v2.2.0 (32bit)

### Mongo2Go 0.1.2, August 20 2012
* stable version
* includes mongod, mongoimport and mongoexport v2.2.0-rc1 (32bit)

### Mongo2Go 0.1.1, August 16 2012
* second alpha version
* includes mongod, mongoimport and mongoexport v2.2.0-rc1 (32bit)

### Mongo2Go 0.1.0, August 15 2012
* first alpha version
* includes mongod, mongoimport and mongoexport v2.2.0-rc1 (32bit)

</details>

How to contribute
-------------------------------------

Just fork the project, make your changes send us a PR.

In the root folder, just run:
```
dotnet restore
dotnet build
dotnet test src/Mongo2GoTests
```

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