Q:

Error if the [AssemblyInitialize] already exists in the test project with Specflow

I've updated Specflow from the 3.0.225 to the 3.1.62 and I received the error Tests_Integration_MSTestAssemblyHooks: Cannot define more than one method with the AssemblyInitialize attribute inside an assembly.
The reason is obviously that I'd had the [AssemblyInitialize] attribute in my project already. How can I fix it?

A:

The reason is that Specflow generates another file in the background which has the AssemblyInitialize/AssemblyCleanup hooks defined. In order to fix that one should use the hooks provided by Specflow, namely BeforeTestRun/AfterTestRun. Like this:
[Binding] // add the Binding attribute on the class with the assembly level hooks
public abstract class SeleniumTest 
{
  // it used to be [AssemblyInitialize]
  [BeforeTestRun]
  public static void AssemblyInitialize(/* note there is no TestContext parameter anymore */)
  {
    // ...
  }

  // it used to be [AssemblyCleanup]
  [AfterTestRun]
  public static void AssemblyCleanup()
  {
    // ...
  }
}

