How to get Code Coverage from Unit Tests in Visual Studio 2022 Community Edition?-CodePudding

I've downloaded the latest VS2022 v17.1 Community Edition and it doesn't come with Code Coverage in-built. I'm accustomed to the Enterprise Edition and all I can find is paid options for the Community Edition.

Is it possible to do Code Coverage in VS2022 Community Edition for FREE?

CodePudding user response：

Looks like I'm in luck! XUnit Test Projects come with a NuGet plugin

This doesn't need to be installed in any project, all you need to do is run these steps that I've made into a Powershell script:

ExecCodeCoverage.ps1

# PURPOSE: Automates the running of Unit Tests and Code Coverage
# REF: https://stackoverflow.com/a/70321555/495455

# If running outside the test folder
#cd E:\Dev\XYZ\src\XYZTestProject

# This only needs to be installed once (globally), if installed it fails silently: 
dotnet tool install -g dotnet-reportgenerator-globaltool

# Save currect directory into a variable
$dir = pwd

# Delete previous test run results (there's a bunch of subfolders named with guids)
Remove-Item -Recurse -Force $dir/TestResults/

# Run the Coverlet.Collector (this is an NuGet included with XUnit Test Projects)
$output = [string] (& dotnet test --collect:"XPlat Code Coverage" 2>&1)
Write-Host "Last Exit Code: $lastexitcode"
Write-Host $output

# Extract the GUID from the Output eg, 
#"Attachments:   E:\Dev\XYZ\src\XYZTestProject\TestResults\0f26f16d-bbe8-463b-856b-6d4fbee673bd\coverage.cobertura.xml Passed!"  

$i = $output.LastIndexOf("TestResults")   11
$j = $output.LastIndexOf("coverage")
$cmdGuid = $output.SubString($i,$j - $i - 1)
Write-Host $cmdGuid 

# Delete previous test run reports - note if you're getting wrong results do a Solution Clean and Rebuild to remove stale DLLs in the bin folder
Remove-Item -Recurse -Force $dir/coveragereport/

# To keep a history of the Code Coverage we need to use the argument:
# -historydir:SOME_DIRECTORY 
if (!(Test-Path -path $dir/CoverageHistory)) {  
 New-Item -ItemType directory -Path $dir/CoverageHistory
}

# Generate the Code Coverage HTML Report
reportgenerator -reports:"$dir/TestResults/$cmdGuid/coverage.cobertura.xml" -targetdir:"coveragereport" -reporttypes:Html -historydir:$dir/CoverageHistory 

# Open the Code Coverage HTML Report (if running on a WorkStation)
$osInfo = Get-CimInstance -ClassName Win32_OperatingSystem
if ($osInfo.ProductType -eq 1) {
(& "$dir/coveragereport/index.html")
}

Put it in the TestProject:

The results are quite good (for FREE):

You can drill down to see the highlighted line coverage, its just not as powerful or integrated as the Enterprise Edition:

I updated the script to support History as well:

CodePudding user response：

You have Fine Code Coverage working with VS 2022, you can access to it here https://github.com/FortuneN/FineCodeCoverage/releases and click on the 2022 file.

After that, it´s just a plugin that you install on your computer and it´s available to every single project without the need to add it project by project.