Unit testing a c# Method using Moq

Question

I'm new to unit testing and the language c sharp and I'm trying to unit test by mocking ISessionStorageService to test the HasGlobaladminaccess function but my setup does not seem to work as expected.

public class Context
{
    public asyncTask<bool>HasGlobalAdminAccessAsync(Blazored.SessionStorage.ISessionStorageService sessionStorage)
    {
        return await HasAccessAsync(sessionStorage, Config.Constants.HAS_GLOBALE_ADMIN_ACCESS);
    }

    private async Task<bool> HasAccessAsync(Blazored.SessionStorage.ISessionStorageService sessionStorage, string sessionStorageKey)
    {
        ILogger _logger = Log.ForContext<ContextHelpers>();

        try
        {
            _logger.Debug("HasAccessAsync({sessionStorageKey})", sessionStorageKey);
            var access = await sessionStorage.GetItemAsync<bool>(sessionStorageKey);
            _logger.Debug("HasAccessAsync({sessionStorageKey})::access={access}", sessionStorageKey, access);
            return access;
        }
        catch (Exception ex)
        {
            _logger.Debug("HasAccessAsync({sessionStorageKey})::exception={ex}", sessionStorageKey, ex.Message);
            return false;
        }
    }
}

My test method

private readonly Mock<ISessionStorageService> MockStorage = new Mock<ISessionStorageService>();

[Fact()]
public async Task HasGlobalAdminAccessAsyncTest()
{
    string guid = System.Guid.NewGuid().ToString();
    Context context = new Context();
    MockStorage.Setup(foo => foo.GetItemAsync<bool>(guid)).ReturnsAsync(true);
    var person = await context.HasGlobalAdminAccessAsync(MockStorage.Object);
    Assert.True(person , guid);
}

What do you want to test with this line: Assert.True(person, guid) ? — Peter Csala
– Peter Csala, Commented Aug 13, 2021 at 7:24

Nkosi · Accepted Answer · 2021-08-12 12:45:16Z

1

Either use the same value as what's in Config.Constants.HAS_GLOBALE_ADMIN_ACCESS for the GUID value in your test

Or use

foo => foo.GetItemAsync<bool>(It.IsAny<Guid>())

In your Setup call.

As it's written, you have your test set to only accept the exact GUID that is returned from Guid.NewGuid() in your test, so it's not going to work in general.

edited Aug 12, 2021 at 12:45

Nkosi

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answered Aug 12, 2021 at 12:38

Shane Rimmer

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