This Repo demonstrates the parallel execution of unit tests with dotnet test

Contents

• Dotnet Standard 2.0 library csproj
  • Method being tested (MyNetStandardClass.cs)
• net461 test library csproj
  • Tests class (marked with various non parallel attributes / assembly directives)
• netcoreapp2.2 test library csproj
  • Test class (marked with various non parallel attributes / assembly directives)

Running the tests

Both tests write timestamps for enter/exit to the same output file to show parallel execution

• Output file is created in c:\temp\output.txt if this doesn't exist or is undesireable change it in MyLibrary/MyNetStandardClass
• Run dotnet test in the current directory of your repo

PS E:\My Documents\DotnetTestParallelExample> cd "E:\My Documents\DotnetTestParallelExample"
PS E:\My Documents\DotnetTestParallelExample> dotnet test
Test run for E:\My Documents\DotnetTestParallelExample\TestsCore2\bin\Debug\netcoreapp2.2\TestsCore2.dll(.NETCoreApp,Version=v2.2)
Test run for E:\My Documents\DotnetTestParallelExample\Tests461\bin\Debug\net461\Tests461.dll(.NETFramework,Version=v4.6.1)
Microsoft (R) Test Execution Command Line Tool Version 16.3.0-preview-20190905-01
Copyright (c) Microsoft Corporation.  All rights reserved.

Microsoft (R) Test Execution Command Line Tool Version 16.3.0-preview-20190905-01
Copyright (c) Microsoft Corporation.  All rights reserved.

Starting test execution, please wait...

A total of 1 test files matched the specified pattern.Starting test execution, please wait...


A total of 1 test files matched the specified pattern.

Test Run Successful.
Total tests: 1
     Passed: 1
 Total time: 4.0378 Seconds

Test Run Successful.
Total tests: 1
     Passed: 1
 Total time: 4.0491 Seconds

Open the output file

c:\temp\output.txt

This shows the following:

Core SetUp 526728187
Core Enter Test 526728187
461 SetUp 526728312
461 Enter Test 526728328
Core Exit Test 526731187
461 Exit Test 526731328

Both tests execute in parallel

Runsettings

Runsettings file is included but does not seem to be respected

del c:\temp\output.txt
dotnet test -s test.runsettings