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c#asp.net-mvctddlog4net
Puerto
Puerto

Reputation: 1134

Log4net not working with NUnit tests

So I've done some looking around. Most of the threads I find seem related to people wanting to run log4net in their actual tests. Meaning they want log entries in their test class. I don't want log entries from my actual tests. But I do want the expected log entries from the code I am testing. This is my first time using Log4net. If I run the code on it's own, the log entries work. If I run a test, no log entries though. Im guessing it's not initialized properly or perhaps I don't have log4net setup correctly in my UnitTest (in appconfig or assembly maybe??). This is an MVC 5 application. Here is a basic example.

Nunit Test (basics):

namespace MyUnitTests
[TestFixture]
public class MyTestClass
{
    [Test]
    public void MyTest
    {
        //arrange
        var testVar = @"string";

        //act
        MyProjectClass.Method(testVar);

        //assert something
    }
}

so over in MyProject I have (basics):

public class MyProjectClass : Controller
{
    private static readonly log4net.ILog log = log4net.LogManager.GetLogger(typeof(MyProjectClass));

    public static void Method(string myString)
    {
        //does whatever
        log("added value");
    }

So I've obviously simplified this for the discussion. But when I run my actual test, my test passes, the values and the outcome are all as they should be. I just never see the log entry in the log for method I just tested. Im sure I'm missing something simple. Any help would be greatly appreciated. Thanks!

Upvotes: 1

Views: 2068

Answers (2)

Puerto
Puerto

Reputation: 1134

I just want to add the above answer. In addition to setting the appconfig in your UnitTest the same as your Application webconfig (editing the value for log file location if you want) you also need to add the assembly entry as you would have for your application already (changing web.config to app.config in my case).

//logger
[assembly: log4net.Config.XmlConfigurator(ConfigFile = "app.config", Watch = true)]

You'll also need to initialize the logger (at least I did) in your unit test. So basically I added this in my arrange of my test if wanted my logging in the method I was testing to fire. Add something like this in your arrange or setup for you test class possibly:

[Test]
public void MyTest
{
    //arrange
    log4net.ILog log = log4net.LogManager.GetLogger(typeof(MyTestClass));
        log4net.Config.XmlConfigurator.Configure();

}

Upvotes: 2

Ewen Cochran
Ewen Cochran

Reputation: 86

If you look in the app.config for your main project, you should see a log4net config section that specifies the location of the log file.

You first need to add log4net to your <configSections> like this:

<configSections> <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net, Version=1.2.10.0, Culture=neutral, PublicKeyToken=1b44e1d426115821" /> </configSections>

You can then add a <log4net> section to the <configuration> tag. Documentation for this can be found here.

Upvotes: 1

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