Add Patterns correctness tests; add missing file headers

ICSharpCode.Decompiler.Tests/CorrectnessTestRunner.cs

@@ -95,6 +95,12 @@ namespace ICSharpCode.Decompiler.Tests
 			RunCS(options: options);
 		}
 
+		[Test]
+		public void Patterns([ValueSource("defaultOptions")] CompilerOptions options)
+		{
+			RunCS(options: options);
+		}
+
 		[Test]
 		public void NullableTests([ValueSource("defaultOptions")] CompilerOptions options)
 		{

ICSharpCode.Decompiler.Tests/ICSharpCode.Decompiler.Tests.csproj

@@ -58,6 +58,7 @@
     <Compile Include="ILPrettyTestRunner.cs" />
     <Compile Include="Stub.cs" />
     <Compile Include="TestCases\Correctness\NullableTests.cs" />
+    <Compile Include="TestCases\Correctness\Patterns.cs" />
     <Compile Include="TestCases\Correctness\TrickyTypes.cs" />
     <Compile Include="TestCases\ILPretty\Issue379.cs" />
     <Compile Include="TestCases\Pretty\Async.cs" />

ICSharpCode.Decompiler.Tests/TestCases/Correctness/Patterns.cs

@@ -0,0 +1,31 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ICSharpCode.Decompiler.Tests.TestCases.Correctness
+{
+	/// <summary>
+	/// This file contains special cases of some patterns that cannot be tested in pretty tests.
+	/// </summary>
+	class Patterns
+	{
+		static void Main()
+		{
+			SimpleUsingNullStatement();
+		}
+
+		/// <summary>
+		/// Special case: Roslyn eliminates the try-finally altogether.
+		/// </summary>
+		public static void SimpleUsingNullStatement()
+		{
+			Console.WriteLine("before using");
+			using (null) {
+				Console.WriteLine("using (null)");
+			}
+			Console.WriteLine("after using");
+		}
+	}
+}

ICSharpCode.Decompiler/IL/Instructions/LockInstruction.cs

@@ -1,4 +1,22 @@
-using System;
+// Copyright (c) 2017 Siegfried Pammer
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy of this
+// software and associated documentation files (the "Software"), to deal in the Software
+// without restriction, including without limitation the rights to use, copy, modify, merge,
+// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
+// to whom the Software is furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in all copies or
+// substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
+// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;

ICSharpCode.Decompiler/IL/Transforms/LockTransform.cs

@@ -1,4 +1,22 @@
-using System;
+// Copyright (c) 2017 Siegfried Pammer
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy of this
+// software and associated documentation files (the "Software"), to deal in the Software
+// without restriction, including without limitation the rights to use, copy, modify, merge,
+// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
+// to whom the Software is furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in all copies or
+// substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
+// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;