Refactored actions

tests/ReactiveHistory.UnitTests/StateTests.cs

@@ -11,24 +11,14 @@ namespace ReactiveHistory.UnitTests
         [Trait("ReactiveHistory", "State")]
         public void Constructor_Should_Throw_When_Undo_Parameter_Is_Nulll()
         {
-            Assert.Throws<ArgumentNullException>(
-                "undo",
-                () =>
-                {
-                    var target = new State(null, () => { });
-                });
+            Assert.Throws<ArgumentNullException>("undo", () => new State(null, () => { }));
         }
 
         [Fact]
         [Trait("ReactiveHistory", "State")]
         public void Constructor_Should_Throw_When_Redo_Parameter_Is_Nulll()
         {
-            Assert.Throws<ArgumentNullException>(
-                "redo",
-                () =>
-                {
-                    var target = new State(() => { }, null);
-                });
+            Assert.Throws<ArgumentNullException>("redo", () => new State(() => { }, null));
         }
 
         [Fact]