Set defaults while adding features

framework/src/Volo.Abp.Features/Volo/Abp/Features/FeatureCheckerBase.cs

@@ -11,7 +11,7 @@ public abstract class FeatureCheckerBase : IFeatureChecker, ITransientDependency
     public virtual async Task<bool> IsEnabledAsync(string name)
     {
         var value = await GetOrNullAsync(name);
-        if (value == null)
+        if (value.IsNullOrEmpty())
         {
             return false;
         }

framework/src/Volo.Abp.Features/Volo/Abp/Features/FeatureDefinition.cs

@@ -100,11 +100,11 @@ public class FeatureDefinition : ICanCreateChildFeature
         bool isVisibleToClients = true,
         bool isAvailableToHost = true)
     {
-        Name = name;
+        Name = Check.NotNullOrWhiteSpace(name, nameof(name));
         DefaultValue = defaultValue;
         DisplayName = displayName ?? new FixedLocalizableString(name);
         Description = description;
-        ValueType = valueType;
+        ValueType = valueType ?? new ToggleStringValueType();
         IsVisibleToClients = isVisibleToClients;
         IsAvailableToHost = isAvailableToHost;
 

modules/feature-management/src/Volo.Abp.FeatureManagement.Domain/Volo/Abp/FeatureManagement/FeatureDefinitionRecord.cs

@@ -70,7 +70,7 @@ public class FeatureDefinitionRecord : BasicAggregateRoot<Guid>, IHasExtraProper
         DisplayName =  Check.NotNullOrWhiteSpace(displayName, nameof(displayName), FeatureDefinitionRecordConsts.MaxDisplayNameLength);
 
         Description = Check.Length(description, nameof(description), FeatureDefinitionRecordConsts.MaxDescriptionLength);
-        DefaultValue =  Check.NotNullOrWhiteSpace(defaultValue, nameof(defaultValue), FeatureDefinitionRecordConsts.MaxDefaultValueLength);
+        DefaultValue =  Check.Length(defaultValue, nameof(defaultValue), FeatureDefinitionRecordConsts.MaxDefaultValueLength);
 
         IsVisibleToClients = isVisibleToClients;
         IsAvailableToHost = isAvailableToHost;