AppSettings.json for Integration Test in ASP.NET Core

Question

I am following this guide. I have a Startup in the API project that uses an appsettings.json configuration file.

public class Startu         


        

Answer 1

Integration test on ASP.NET.Core 2.0 follow MS guide ,

You should right click appsettings.json set its property Copy to Output directory to Copy always

And now you could find the json file in output folder, and build TestServer with

var projectDir = GetProjectPath("", typeof(TStartup).GetTypeInfo().Assembly);
_server = new TestServer(new WebHostBuilder()
    .UseEnvironment("Development")
    .UseContentRoot(projectDir)
    .UseConfiguration(new ConfigurationBuilder()
        .SetBasePath(projectDir)
        .AddJsonFile("appsettings.json")
        .Build()
    )
    .UseStartup());



/// Ref: https://stackoverflow.com/a/52136848/3634867
/// 

/// Gets the full path to the target project that we wish to test
/// 
/// 
/// The parent directory of the target project.
/// e.g. src, samples, test, or test/Websites
/// 
/// The target project's assembly.
/// The full path to the target project.
private static string GetProjectPath(string projectRelativePath, Assembly startupAssembly)
{
    // Get name of the target project which we want to test
    var projectName = startupAssembly.GetName().Name;

    // Get currently executing test project path
    var applicationBasePath = System.AppContext.BaseDirectory;

    // Find the path to the target project
    var directoryInfo = new DirectoryInfo(applicationBasePath);
    do
    {
        directoryInfo = directoryInfo.Parent;

        var projectDirectoryInfo = new DirectoryInfo(Path.Combine(directoryInfo.FullName, projectRelativePath));
        if (projectDirectoryInfo.Exists)
        {
            var projectFileInfo = new FileInfo(Path.Combine(projectDirectoryInfo.FullName, projectName, $"{projectName}.csproj"));
            if (projectFileInfo.Exists)
            {
                return Path.Combine(projectDirectoryInfo.FullName, projectName);
            }
        }
    }
    while (directoryInfo.Parent != null);

    throw new Exception($"Project root could not be located using the application root {applicationBasePath}.");
}

Ref: TestServer w/ WebHostBuilder doesn't read appsettings.json on ASP.NET Core 2.0, but it worked on 1.1