Add type system accessibility tests.

ICSharpCode.NRefactory.Tests/TypeSystem/TypeSystemTests.TestCase.cs

@@ -332,4 +332,14 @@ namespace ICSharpCode.NRefactory.TypeSystem.TestCase
 		public void Foo (int? bar = 42) { }
 	}
 
+	public class AccessibilityTest
+	{
+		public void Public() {}
+		internal void Internal() {}
+		protected internal void ProtectedInternal() {}
+		internal protected void InternalProtected() {}
+		protected void Protected() {}
+		private void Private() {}
+		void None() {}
+	}
 }

ICSharpCode.NRefactory.Tests/TypeSystem/TypeSystemTests.cs

@@ -1213,5 +1213,18 @@ namespace ICSharpCode.NRefactory.TypeSystem
 			var method = type.GetMethods ().Single (m => m.Name == "Foo");
 			Assert.AreEqual(42, method.Parameters.Single ().ConstantValue);
 		}
+		
+		[Test]
+		public void AccessibilityTests()
+		{
+			ITypeDefinition type = GetTypeDefinition(typeof(AccessibilityTest));
+			Assert.AreEqual(Accessibility.Public, type.Methods.Single(m => m.Name == "Public").Accessibility);
+			Assert.AreEqual(Accessibility.Internal, type.Methods.Single(m => m.Name == "Internal").Accessibility);
+			Assert.AreEqual(Accessibility.ProtectedOrInternal, type.Methods.Single(m => m.Name == "ProtectedInternal").Accessibility);
+			Assert.AreEqual(Accessibility.ProtectedOrInternal, type.Methods.Single(m => m.Name == "InternalProtected").Accessibility);
+			Assert.AreEqual(Accessibility.Protected, type.Methods.Single(m => m.Name == "Protected").Accessibility);
+			Assert.AreEqual(Accessibility.Private, type.Methods.Single(m => m.Name == "Private").Accessibility);
+			Assert.AreEqual(Accessibility.Private, type.Methods.Single(m => m.Name == "None").Accessibility);
+		}
 	}
 }