Service provider support (#75)

* Start of service provider support

* Support for resolving named and unnamed services through MappingData

* Support for configuring a service provider instance

* Support for discovered named GetService overloads

* Support for resolving GetService(Type, string, ...extras) service provider methods

* Surfacing registered service provider instances from MappingInstanceData / Test coverage for service provision error conditions

* Erroring if requested service provider type is not configured

* Duplicate service provider error test

* Erroring on duplicate service provider definition / Test coverage for service provider use in a configured data source

* Support for service provision in a global mapping callback

* Erroring if null service providers supplied

* Fixing MappingContext access in MappingInstanceData base ctor

Author: SteveWilkes

AgileMapper.UnitTests.NonParallel/Configuration/WhenConfiguringMappingCallbacks.cs

@@ -14,8 +14,7 @@ public void ShouldExecuteAGlobalPreMappingCallbackViaTheStaticApi()
             {
                 var mappedTypes = new List<Type>();
 
-                Mapper
-                    .Before
+                Mapper.Before
                     .MappingBegins
                     .Call((s, t) => mappedTypes.AddRange(new[] { s.GetType(), t?.GetType() }));
 
@@ -34,8 +33,7 @@ public void ShouldExecuteAGlobalPostMappingCallbackViaTheStaticApiConditionally(
             {
                 var mappedTypes = new List<Type>();
 
-                Mapper
-                    .After
+                Mapper.After
                     .MappingEnds
                     .If((s, t) => SourceIsPersonViewModel(s, t))
                     .Call((s, t) => mappedTypes.AddRange(new[] { s.GetType(), t.GetType() }));
@@ -49,10 +47,7 @@ public void ShouldExecuteAGlobalPostMappingCallbackViaTheStaticApiConditionally(
         }
 
         // ReSharper disable once UnusedParameter.Local
-        private static bool SourceIsPersonViewModel(object source, object target)
-        {
-            return source is PersonViewModel;
-        }
+        private static bool SourceIsPersonViewModel(object source, object target) => source is PersonViewModel;
 
         [Fact]
         public void ShouldExecutePreAndPostMappingCallbacksForASpecifiedMemberConditionallyViaTheStaticApi()
@@ -63,8 +58,7 @@ public void ShouldExecutePreAndPostMappingCallbacksForASpecifiedMemberConditiona
                 var customersAdded = 0;
                 var customersRemoved = 0;
 
-                Mapper
-                    .WhenMapping
+                Mapper.WhenMapping
                     .To<Customer>()
                     .Before
                     .Mapping(c => c.Discount)
@@ -103,24 +97,24 @@ public void ShouldExecutePreAndPostMappingCallbacksForASpecifiedMemberConditiona
         }
 
         [Fact]
-        public void ShouldExecuteAPreMappingCallbackForAConstructorOnlyTarget()
+        public void ShouldExecuteAPreMappingCallbackForAConstructorOnlyTargetViaTheStaticApi()
         {
-            using (var mapper = Mapper.CreateNew())
+            TestThenReset(() =>
             {
                 var callbackCalled = false;
 
-                mapper.WhenMapping
+                Mapper.WhenMapping
                     .To<PublicCtor<string>>()
                     .Before
                     .MappingBegins
                     .Call(ctx => callbackCalled = true);
 
                 var source = new PublicProperty<Guid> { Value = Guid.NewGuid() };
-                var result = mapper.Map(source).ToANew<PublicCtor<string>>();
+                var result = Mapper.Map(source).ToANew<PublicCtor<string>>();
 
                 result.Value.ShouldBe(source.Value.ToString());
                 callbackCalled.ShouldBeTrue();
-            }
+            });
         }
     }
 }

AgileMapper.UnitTests.NonParallel/NonParallelTestsBase.cs

@@ -8,6 +8,8 @@ protected void TestThenReset(Action testAction)
         {
             try
             {
+                Mapper.ResetDefaultInstance();
+
                 testAction.Invoke();
             }
             finally

AgileMapper.UnitTests/AgileMapper.UnitTests.csproj

@@ -105,6 +105,7 @@
     <Compile Include="Configuration\Inline\WhenViewingMappingPlans.cs" />
     <Compile Include="Configuration\WhenApplyingMapperConfigurations.cs" />
     <Compile Include="Configuration\WhenApplyingMapperConfigurationsIncorrectly.cs" />
+    <Compile Include="Configuration\WhenResolvingServices.cs" />
     <Compile Include="Configuration\WhenViewingMappingPlans.cs" />
     <Compile Include="Dictionaries\WhenMappingFromDictionariesOnToComplexTypes.cs" />
     <Compile Include="Dictionaries\WhenMappingFromDictionariesOnToEnumerableMembers.cs" />