Bamboo currently allows you to configure a MSTest Runner task as documented here

Trying to implement from Bamboo Cloud generates the following error:

java.lang.IllegalArgumentException : mstest.exe cannot be found

However, applying the following workaround allows users to utilise the MSTest Runner in the Bamboo Cloud environment:

So I found a work around solution where you manually call MSTest.exe and then parse the results.

1) Define custom server capability:

Capability Type: Executable
Type: Command
Label: MSTest
Path: C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\IDE\MSTest.exe

2) Configure plan test job

3) Add Task > Script

Inline Script Body: IF EXIST %1 DEL %1 
Argument: ${bamboo.buildResultKey}-${bamboo.buildNumber}.trx

4) Add Task > Command

Executable: MSTest
Argument: /testcontainer:[INSERT_YOUR_TEST.DLL] /resultsfile:${bamboo.buildResultKey}-${bamboo.buildNumber}.trx

5) Add Task > MSTest Parser

MSTest Test Results File/Directory: ${bamboo.buildResultKey}-${bamboo.buildNumber}.trx