Can I write the results of SimpleInjectors diagnostics to a log file?

Question

Using SimpleInjector I call container.Verify() at the end of my configuration, and get the diagnostics information in the debugger as described in the documentation. I would like to write that information to a log file. Is there a way access it programmatically or a way hook a logger or tracer into SimpleInjector?

Answer 1

Simple Injector 2.4 contains a diagnostic API (SimpleInjector.Diagnostics.dll) that allow you to query the container for diagnostic warnings. Using this API you can write integration tests that automatically check the configuration for diagnostic warnings:

// using SimpleInjector.Diagnostics;

[TestMethod]
public void Container_Always_ContainsNoDiagnosticWarnings()
{
    // Arrange
    var container = Bootstrapper.GetInitializedContainer();

    container.Verify();

    // Assert
    var results = Analyzer.Analyze(container);

    Assert.IsFalse(results.Any(), Environment.NewLine +
        string.Join(Environment.NewLine,
            from result in results
            select result.Description));
}

Of course, you can also write this to a file:

var results = Analyzer.Analyze(container);

File.WriteAllLines("c:\\diagnostic.txt", results.Select(r => r.Description));