Make Your Azure WebJobs Testable Again

ProgramTests.cs

[TestClass]
public class ProgramTests
{
    [TestMethod]
    public void Given_JobHostBuilder_Main_ShouldReturn_Result()
    {
        var builder = new Mock<IJobHostBuilder>();
        builder.SetupProperty(p => p.IsRunning);

        // Inject a mocked instance to the property.
        Program.WebJobHost = builder.Object;

        Program.Main();

        builder.Object.IsRunning.Should().BeTrue();
    }
}