Run a specified NUnit test as a 32-bit process in a 64-bit environment
c#, nunit, oledb, teamcity
Solution
Changing the "Platform target" to x86 on the unit test project should do the trick.
Problem
I have a component that uses OLEDB to import data from an Excel file. Due to business risk and time constraints, my executable shell is compiled as x86 (32-bit) to avoid the 64-bit OLEDB problem and the component runs flawlessly when loaded into my 32-bit shell. However, my CI build process (TeamCity) is running its TestRunner in a 64-bit process and so unit tests targeting the above functionality are failing with the usual error message: Test(s) failed. System.InvalidOperationException : The 'Microsoft.Jet.OLEDB.4.0' provider is not registered on the local machine My solutions would appear to be - Change the CI test runner - not feasible as the testrunner is used by 10 other teams - Ensure this test is run in a 32-bit process So, is there a way to tell NUnit, or the TeamCity NUnit test runner, to run a specific test in a 32-bit process? Ideally, I'd like the same tests to run unmodified in both IDE and CI.