public static FeatureClass FromFeatureInstance(Feature featureInstance)
{
if (featureInstance == null)
{
throw new ArgumentNullException(nameof(featureInstance));
}
Type featureType = featureInstance.GetType();
var featureFileAttribute = featureType
.GetTypeInfo()
.GetCustomAttribute <FeatureFileAttribute>();
var featureFilePath = featureFileAttribute?.Path ?? $"{featureType.Name}.feature";
var stepMethods = featureType.GetTypeInfo().GetMethods(BindingFlags.Static | BindingFlags.Instance | BindingFlags.Public | BindingFlags.FlattenHierarchy)
.Where(m => m.IsDefined(typeof(BaseStepDefinitionAttribute)))
.Select(m => StepMethodInfo.FromMethodInfo(m, featureInstance))
.ToList();
var sharedSteps =
featureType.GetTypeInfo()
.GetCustomAttributes <IncludeStepsAttribute>()
.SelectMany(attr => GetSharedSteps(attr.FromType));
stepMethods.AddRange(sharedSteps);
return(new FeatureClass(featureFilePath, stepMethods));
}
public bool IsSameAs(StepMethodInfo other)
{
if (other == this)
return true;
return other != null
&& other._methodInfoWrapper.IsSameAs(_methodInfoWrapper);
}
private static IEnumerable <StepMethodInfo> GetSharedSteps(Type fromType)
{
var instance = Activator.CreateInstance(fromType);
return
(fromType.GetTypeInfo().GetMethods(BindingFlags.Static | BindingFlags.Instance | BindingFlags.Public | BindingFlags.FlattenHierarchy)
.Where(m => m.IsDefined(typeof(BaseStepDefinitionAttribute)))
.Select(m => StepMethodInfo.FromMethodInfo(m, instance)));
}
private StepMethod(StepMethodInfo stepMethodInfo, PatternKind kind, string pattern, string stepText)
{
_stepMethodInfo = stepMethodInfo ?? throw new ArgumentNullException(nameof(stepMethodInfo));
Kind = kind;
Pattern = !string.IsNullOrWhiteSpace(pattern) ? pattern : throw new ArgumentNullException(nameof(pattern));
StepText = !string.IsNullOrWhiteSpace(stepText)
? stepText
: throw new ArgumentNullException(nameof(stepText));
}
public static StepMethod FromStepMethodInfo(StepMethodInfo stepMethodInfo, Step gherkinScenarioStep)
{
var matchingPattern = GetMatchingPattern(stepMethodInfo, gherkinScenarioStep);
if (matchingPattern == null)
{
throw new InvalidOperationException($"This step method info (`{stepMethodInfo.GetMethodName()}`) cannot handle given scenario step: `{gherkinScenarioStep.Keyword.Trim()} {gherkinScenarioStep.Text.Trim()}`.");
}
var stepMethodInfoClone = stepMethodInfo.Clone();
stepMethodInfoClone.DigestScenarioStepValues(gherkinScenarioStep);
return(new StepMethod(stepMethodInfoClone, matchingPattern.Kind, matchingPattern.Pattern, gherkinScenarioStep.Text));
}
private static ScenarioStepPattern GetMatchingPattern(StepMethodInfo stepMethod, Step gherkinScenarioStep)
{
var gherkinStepText = gherkinScenarioStep.Text.Trim();
foreach (var pattern in stepMethod.ScenarioStepPatterns)
{
if (!pattern.Kind.ToString().Equals(gherkinScenarioStep.Keyword.Trim(), StringComparison.OrdinalIgnoreCase))
{
continue;
}
var match = Regex.Match(gherkinStepText, pattern.Pattern);
if (!match.Success || !match.Value.Equals(gherkinStepText))
{
continue;
}
return(pattern);
}
return(null);
}