implemented toFactory3 method

lib/resolvers/resolving_context.dart

@@ -79,8 +79,11 @@ class ResolvingContext<T> extends Resolver {
      * Создать фабричный resolver с 3 зависимостями от контейнера
      */
   ResolvingContext<T> toFactory3<T1, T2, T3>(T Function(T1, T2, T3) factory) {
-    // TODO: implement toFactory3
-    throw UnimplementedError();
+    Resolver<T> resolver = FactoryResolver<T>(() => factory(
+        _container.resolve<T1>(),
+        _container.resolve<T2>(),
+        _container.resolve<T3>()));
+    return toResolver(resolver);
   }
 
   /**

test/di_container_test.dart

@@ -161,6 +161,23 @@ void main() {
     expect(container.resolve<DependOnAB>().a, a);
     expect(container.resolve<DependOnAB>().b, b);
   });
+
+  test("Bind to the factory resolves with 3 value", () {
+    final container = DiContainer();
+    final a = AA();
+    final b = BB();
+    final c = CC();
+    container.bind<A>().toValue(a);
+    container.bind<B>().toValue(b);
+    container.bind<C>().toValue(c);
+    container
+        .bind<DependOnABC>()
+        .toFactory3<A, B, C>((a, b, c) => DependOnABC(a, b, c));
+
+    expect(container.resolve<DependOnABC>().a, a);
+    expect(container.resolve<DependOnABC>().b, b);
+    expect(container.resolve<DependOnABC>().c, c);
+  });
 }
 
 ResolverMock<T> _makeResolver<T>(T expectedValue) {
@@ -179,6 +196,10 @@ abstract class B {}
 
 class BB implements B {}
 
+abstract class C {}
+
+class CC implements C {}
+
 class DependOnA {
   final A a;
 
@@ -191,3 +212,12 @@ class DependOnAB {
 
   DependOnAB(this.a, this.b) : assert(a != null && b != null);
 }
+
+class DependOnABC {
+  final A a;
+  final B b;
+  final C c;
+
+  DependOnABC(this.a, this.b, this.c)
+      : assert(a != null && b != null && c != null);
+}