FIX: do not validate explicit mapping for child property

Author: chaowlert

src/Mapster.Tests/WhenExplicitMappingRequired.cs

@@ -54,6 +54,20 @@ public void Mapped_Classes_Succeed()
             simpleDto.Name.ShouldEqual(simplePoco.Name);
         }
 
+        [Test]
+        public void Mapped_Classes_Succeed_With_Child_Mapping()
+        {
+            TypeAdapterConfig.GlobalSettings.RequireExplicitMapping = true;
+
+            TypeAdapterConfig<CollectionPoco, CollectionDto>.NewConfig();
+
+            var collectionPoco = new CollectionPoco { Id = Guid.NewGuid(), Name = "TestName", Children = new List<ChildPoco>() };
+
+            var collectionDto = TypeAdapter.Adapt<CollectionPoco, CollectionDto>(collectionPoco);
+
+            collectionDto.Name.ShouldEqual(collectionPoco.Name);
+        }
+
 
         #region TestClasses
 

src/Mapster/MapContext.cs

@@ -27,12 +27,23 @@ public static MapContext Context
             get { return _context ?? (_context = new MapContext()); }
         }
 
+        public static bool HasContext
+        {
+            get { return _context != null; }
+        }
+
         private Dictionary<object, object> _references;
         public Dictionary<object, object> References
         {
             get { return _references ?? (_references = new Dictionary<object, object>(ReferenceComparer.Default)); }
         }
 
+        public static void EnsureContext()
+        {
+            if (_context == null)
+                _context = new MapContext();
+        }
+
         public static void Clear()
         {
             _context = null;

src/Mapster/TypeAdapterConfig.cs

@@ -286,6 +286,10 @@ internal LambdaExpression CreateInlineMapExpression(Type sourceType, Type destin
 
         private LambdaExpression CreateInvokeExpression(Type sourceType, Type destinationType)
         {
+            //ensure there is MapContext to prevent error on GetMergedSettings
+            if (this.RequireExplicitMapping)
+                MapContext.EnsureContext();
+
             Expression invoker;
             if (this == GlobalSettings)
             {
@@ -306,7 +310,7 @@ private LambdaExpression CreateInvokeExpression(Type sourceType, Type destinatio
 
         internal TypeAdapterSettings GetMergedSettings(Type sourceType, Type destinationType, MapType mapType)
         {
-            if (this.RequireExplicitMapping && mapType != MapType.InlineMap)
+            if (this.RequireExplicitMapping && mapType != MapType.InlineMap && !MapContext.HasContext)
             {
                 if (!this.Dict.ContainsKey(new TypeTuple(sourceType, destinationType)))
                     throw new InvalidOperationException(

src/Mapster/project.json

@@ -1,5 +1,5 @@
 {
-  "version": "2.0.2-*",
+  "version": "2.0.3-*",
   "description": "A fast, fun and stimulating object to object mapper.  Kind of like AutoMapper, just simpler and way, way faster.",
   "summary": "A fast, fun and stimulating object to object mapper.  Kind of like AutoMapper, but simpler and way faster.",
   "iconUrl": "http://www.fancyicons.com/free-icons/103/pretty-office-5/png/128/order_128.png",