Coverage fails for file paths relative to the Nunit test directory property

[prw56]

Installed product versions

• Visual Studio: 2022 Professional
• This extension: 1.1.191

Description

When writing tests with paths that depend on the Nunit TestContext.CurrentContext.TestDirectory property, coverage will fail b/c the value of the property at coverage time is different from test execution time.

Steps to recreate

1. create a Test
2. In the test, store the value of TestContext.CurrentContext.TestDirectory (something like this, sorry I can't get the formatting to behave) var curDir = TestContext.CurrentContext.TestDirectory; File.AppendAllText(@"C:\Users\Skull\Desktop\output.txt", $"\n{curDir}");
3. Run the test, then wait a bit for coverage to run, then look at the output, you'll see:

normalTestPath normalTestPath\fine-code-coverage\build-output

Current behavior

When coverage runs the tests "\fine-code-coverage\build-output" is appended to the end of TestContext.CurrentContext.TestDirectory

Expected behavior

Value of TestContext.CurrentContext.TestDirectory should be the same at coverage time as run time.

[tonyhallett]

Use ms code coverage or look at AdjacentBuildOutput

[prw56]

@tonyhallett Was the issue fixed? I assumed your answer was a workaround

[tonyhallett]

The behaviour you see is documented and cannot be changed. Ms code coverage does not require dll copying, runs once and runs only the tests that you select.

[tonyhallett]

If you really need the old style then AdjacentBuildOutput for a Net 6 project:

File.AppendAllText(outputPath, TestContext.CurrentContext.TestDirectory);

\DemoFCC\TestProject1\bin\Debug\net6.0 \DemoFCC\TestProject1\bin\Debug\fine-code-coverage-net6.0

Perhaps this will suffice.

Or if you are accessing resources then embed them in the test assembly https://korzh.com/blog/embedded-resources-testing-projects