nunit version 3 not able to test code involving dynamic generation of assemblies

Question

Scenario: As part of the logic, the system generates a dynamic assembly as follows.

CompilerParameters cp = new CompilerParameters();

cp.GenerateExecutable = false;
cp.GenerateInMemory = true;

cp.TreatWarningsAsErrors = false;
cp.ReferencedAssemblies.Add("Employee.dll");
cp.ReferencedAssemblies.Add("Person.dll");

CompilerResults cr = provider.CompileAssemblyFromSource(cp, "someCode");
if (cr.Errors.Count > 0)
{..}

I open the Unit Test Assembly in NUnit-Gui-0.6.0 and test a method which ends up calling the above code as part of the business logic.

Issue: Above Error Count is greater than 0 and has the following messages:

error CS0006: Metadata file 'Person.dll' could not be found
error CS0006: Metadata file 'Employee.dll' could not be found

I have verified that these assemblies are present in the bin directory along with the Unit Test DLL. This code works in regular application workflow but not in NUnit 3.*.

Environment Details: VS 2017. Unit Test DLL and Application DLLs are full .NET Framework 4.7.1.

Not sure if this is a bug in NUnit 3.* or an application issue.

Regards,

Iftikhar.

geopelia geopelia · Accepted Answer · 2018-05-11T04:24:05

Which configuration mode do you use when compiling the unit test project? When you select "Debug" configuration mode, dll files get output into bin\Debug folder as a default. Since you said your assemblies are in bin folder, please check if you did not placing your assembly in bin\Debug folder.

nunit version 3 not able to test code involving dynamic generation of assemblies

1 Answers