BadImageFormatException while using nUnit for COM object wrapper test

Question

I'm going to refactor a piece of overcomplicated code and I want to do it in a safe manner. In order to do it I have written an unit test. But I can't use the test because it always fails with a BadImageFormatException:

Could not load file or assembly 'XXX, Version=2.0.0.0, Culture=neutral, PublicKeyToken=ZZZ' or one of its dependencies. An attempt was made to load a program with an incorrect format.

The XXX assembly is a proxy-assembly of the COM object. It is added as a refence to the project containing the test.

Currently I use the nUnit 2.5.7.

Couldn't anyone point me how can I solve the problem please?

Thanks in advance!

score 3 · Accepted Answer · edited May 23 '17 at 12:27

3

Seems that your application is running under .NET 4.0, and NUnit - under .NET 2.0

See this: NUnit isn't running Visual Studio 2010 code

edited May 23 '17 at 12:27

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answered Jul 04 '11 at 10:01

abatishchev

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Thanks. You're right. I just didn't see that. Thanks. I'll try to search how can I change the NUnit's runtime. – Igor Soloydenko Jul 04 '11 at 10:03

BadImageFormatException while using nUnit for COM object wrapper test

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