public IRuntimePlugin LoadPlugin(PluginDescriptor pluginDescriptor)
{
var assemblyName = string.Format(ASSEMBLY_NAME_PATTERN, pluginDescriptor.Name);
Assembly assembly;
try
{
assembly = Assembly.Load(assemblyName);
}
catch(Exception ex)
{
throw new SpecFlowException(string.Format("Unable to load plugin: {0}. Please check http://go.specflow.org/doc-plugins for details.", pluginDescriptor.Name), ex);
}
var pluginAttribute = (RuntimePluginAttribute)Attribute.GetCustomAttribute(assembly, typeof(RuntimePluginAttribute));
if (pluginAttribute == null)
throw new SpecFlowException(string.Format("Missing [assembly:RuntimePlugin] attribute in {0}. Please check http://go.specflow.org/doc-plugins for details.", assembly.FullName));
if (!typeof(IRuntimePlugin).IsAssignableFrom((pluginAttribute.PluginType)))
throw new SpecFlowException(string.Format("Invalid plugin attribute in {0}. Plugin type must implement IRuntimePlugin. Please check http://go.specflow.org/doc-plugins for details.", assembly.FullName));
IRuntimePlugin plugin;
try
{
plugin = (IRuntimePlugin)Activator.CreateInstance(pluginAttribute.PluginType);
}
catch (Exception ex)
{
throw new SpecFlowException(string.Format("Invalid plugin in {0}. Plugin must have a default constructor that does not throw exception. Please check http://go.specflow.org/doc-plugins for details.", assembly.FullName), ex);
}
return plugin;
}