Vs2019 无法运行 NUnit 测试 - 'testhost.x86.exe' 的问题

Question

I am created a selenium test framework using NUnit have have a test to open a pages and assert the page title.

However, when I try to run the test, its seems to start and stop without doing anything even running with Debug. The test remains in the not run state.

When I put a break point on { and run the test with debug, nothing changes. It starts and instantly stops without running the test.

Test:

[Test]
[TestCase(Browser.Chrome)]
public void ValidateWebDriverLaunches(Browser browser)
{
    Driver = StaticWebDriverFactory.GetLocalWebDriver(browser);
    Driver.Url = "https://example.com/";

    string title = Driver.Title;
    Assert.AreEqual(true, title.Contains("Example Domain"), "Title is not matching");
}

Error Log

'testhost.x86.exe' (CLR v4.0.30319: Domain 2): Unloaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_32\mscorlib\v4.0_4.0.0.0__b77a5c561934e089\mscorlib.dll'
'testhost.x86.exe' (CLR v4.0.30319: Dependency finder domain): Unloaded 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\Common7\IDE\Extensions\TestPlatform\Microsoft.VisualStudio.TestPlatform.ObjectModel.dll'
The thread 0xcc has exited with code 0 (0x0).
'testhost.x86.exe' (CLR v4.0.30319: Domain 3): Unloaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_32\mscorlib\v4.0_4.0.0.0__b77a5c561934e089\mscorlib.dll'
'testhost.x86.exe' (CLR v4.0.30319: Dependency finder domain): Unloaded 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\Common7\IDE\Extensions\TestPlatform\Microsoft.VisualStudio.TestPlatform.ObjectModel.dll'
The thread 0x2f90 has exited with code 0 (0x0).
The thread 0x2f80 has exited with code 0 (0x0).
The program '[8948] testhost.x86.exe' has exited with code 0 (0x0).

I have set the environment variable

__UNITTESTEXPLORER_VSINSTALLPATH__

to point to

C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\Common7\IDE

as some people have suggested. The only other suggestions I have found is updating VS17, however I am using VS19 and cannot find any information on this version.

Answer 1

I figure out that the issue was myself.

I installed NUnit3TestAdapter nuget package and it works as expected now.

Answer 2

It is required to switch process architecture in Visual Studio to 64.

Visual Studio: Test Tab -> Process Architecture for AnyCPU Projects -> 64

Answer 3

My issue was really weird, my connection string in AppConfig was above the, moving it below solved my issue.

Answer 4

On the way to getting a solution, I found this tip to help see what the premature exit happens:

Go to Test/Options and set the Logging level to "Trace (includes platform logs).

In the trace, it said "NUnit failed to load c:\...\netcoreapp3.1 from a nuget package reference. The very next step from the NUnit Test Adapter 3.16.1 logged Test Execution Complete, even though no tests were run. Could it be our Nuget pacakage doesn't include netcore? Will post back

Answer 5

I had the exact same problem, I tried running UT and it did not start, and in the Output window all I saw was the above error. The way I solved the problem:

And then check if your project is checked in build field, if not- mark it.