How do I test database-related code with NUnit?

Posted by Michael Haren on Stack Overflow See other posts from Stack Overflow or by Michael Haren
Published on 2008-11-26T15:51:01Z Indexed on 2010/05/07 18:08 UTC
Read the original article Hit count: 325

Filed under:

nunit

|

unit-testing

|

database

|

TDD

I want to write unit tests with NUnit that hit the database. I'd like to have the database in a consistent state for each test. I thought transactions would allow me to "undo" each test so I searched around and found several articles from 2004-05 on the topic:

These seem to resolve around implementing a custom attribute for NUnit which builds in the ability to rollback DB operations after each test executes.

That's great but...

Does this functionality exists somewhere in NUnit natively?
Has this technique been improved upon in the last 4 years?
Is this still the best way to test database-related code?

Edit: it's not that I want to test my DAL specifically, it's more that I want to test pieces of my code that interact with the database. For these tests to be "no-touch" and repeatable, it'd be awesome if I could reset the database after each one.

Further, I want to ease this into an existing project that has no testing place at the moment. For that reason, I can't practically script up a database and data from scratch for each test.

© Stack Overflow or respective owner

Related posts about nunit

Is NUnit broken with Windows7 for C++/CLI?

as seen on Stack Overflow - Search for 'Stack Overflow'
NUnit is failing in C++/CLI with a System.IO.FileNotFoundException. I have tried my own freshly-created project, the C++/CLI sample included with NUnit and the one from CodeProject How to use NUnit to test native C++ code using Visual Studio 2008sp1 with NUnit 2.5.5 as well as 2.4.8. I installed… >>> More
nunit-console.exe problem with Mono

as seen on Stack Overflow - Search for 'Stack Overflow'
I could make a dll for NUnit (http://stackoverflow.com/questions/2967726/nunit-test-under-mono), but when I tried to run in with nunit-console.exe I get the following error message. Runtime Environment - OS Version: Unix 10.3.0.0 CLR Version: 2.0.50727.1433 ( 2.6.4 (tarball Thu Apr 22 13:24:33… >>> More
NUnit Test with WatiN, runs OK from and Dev10, But not from starting NUnit from "C:\Program Files (x

as seen on Stack Overflow - Search for 'Stack Overflow'
I have the following code in an Nunit test ... string url = ""; url = @"http://localhost/ClientPortalDev/Account/LogOn"; ieStaticInstanceHelper = new IEStaticInstanceHelper(); ieStaticInstanceHelper.IE = new IE(url); ieStaticInstanceHelper.IE.TextField(Find.ById("UserName")).TypeText("abc"); … >>> More
Why does NUnit ignore datapoints when using generics in a theory

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm trying to make use of the TheoryAttribute, introduced in NUnit 2.5. Everything works fine as long as the arguments are of a defined type: [Datapoint] public double[,] Array2X2 = new double[,] { { 1, 0 }, { 0, 1 } }; [Theory] public void TestForArbitraryArray(double[,] array) { // ... } It… >>> More
nunit-console.exe hangs after finishing test run

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi We got a problem with NUnit 2.5.3: nunit-console.exe does not return after finishing all tests. The process hangs forever. Example: All tests succeed, but it keeps doing something. Output: Runtime Environment - OS Version: Microsoft Windows NT 5.1.2600 Service Pack 3 CLR Version: 2.0.50727… >>> More

Related posts about unit-testing

Unit testing best practices for a unit testing newbie

as seen on Programmers - Search for 'Programmers'
In recent years, I have only written small components for people in larger projects or small tools. I have never written a unit test and it always seems like learning how to write them and actually making one takes a lot longer than simply firing up the program and testing for real. I am just about… >>> More
About unit testing a function in the zend framework and unit testing in general

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello people, I am diving into the world of unit testing. And i am sort of lost. I learned today that unit testing is testing if a function works. I wanted to test the following function: public function getEventById($id) { return $this->getResource('Event')->getEventById($id); } So… >>> More
Unit testing a database connection and general questions on database-dependent code and unit testing

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, If I have a method which establishes a database connection, how could this method be tested? Returning a bool in the event of a successful connection is one way, but is that the best way? From a testability method, is it best to have the connection method as one method and the method to get… >>> More
What is the objective of unit testing?

as seen on Programmers - Search for 'Programmers'
I've been working with C# for the last 2 years, and I've never done any unit testing. I just need to know what the objective of unit testing is. What kind of results do we expect from unit testing? Is code quality checked by unit testing? In my view, unit testing is the job of testers; if that is… >>> More
Unit testing newbie team needs to unit test

as seen on Programmers - Search for 'Programmers'
I'm working with a new team that has historically not done ANY unit testing. My goal is for the team to eventually employ TDD (Test Driven Development) as their natural process. But since TDD is such a radical mind shift for a non-unit testing team I thought I would just start off with writing unit… >>> More