/// <summary>
/// Gets a flag that determines whether theories are pre-enumerated. If enabled, then the
/// discovery system will return a test case for each row of test data; if disabled, then the
/// discovery system will return a single test case for the theory. If the flag is not present,
/// returns the default value (<c>true</c>).
/// </summary>
public static bool PreEnumerateTheoriesOrDefault(this _ITestFrameworkDiscoveryOptions discoveryOptions)
{
Guard.ArgumentNotNull(nameof(discoveryOptions), discoveryOptions);
return(discoveryOptions.PreEnumerateTheories() ?? true);
}