Add failing unit test for CompilationUnit.ConditionalSymbols.

ICSharpCode.NRefactory.CSharp/Resolver/Log.cs

@@ -19,12 +19,7 @@
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
-using System.Globalization;
 using System.Linq;
-using System.Text;
-using System.Threading;
-using ICSharpCode.NRefactory.TypeSystem;
-using ICSharpCode.NRefactory.TypeSystem.Implementation;
 
 namespace ICSharpCode.NRefactory.CSharp.Resolver
 {

ICSharpCode.NRefactory.Tests/CSharp/Parser/GeneralScope/PreprocessorDirectiveTests.cs

@@ -245,5 +245,24 @@ class B { }
 			Assert.AreEqual(PreProcessorDirectiveType.Elif, bbb.Type);
 			Assert.AreEqual("BBB", bbb.Argument);
 		}
+		
+		[Test]
+		[Ignore("parser bug (BBB is missing)")]
+		public void ConditionalSymbolTest()
+		{
+			const string program = @"// Test
+#if AAA
+#undef AAA
+#define CCC
+#else
+#define DDD
+#endif
+class C {}";
+			CSharpParser parser = new CSharpParser();
+			parser.CompilerSettings.ConditionalSymbols.Add("AAA");
+			parser.CompilerSettings.ConditionalSymbols.Add("BBB");
+			var cu = parser.Parse(program, "elif.cs");
+			Assert.AreEqual(new[] { "BBB", "CCC" }, cu.ConditionalSymbols);
+		}
 	}
 }

ICSharpCode.NRefactory/Utils/LazyInit.cs

@@ -17,10 +17,7 @@
 // DEALINGS IN THE SOFTWARE.
 
 using System;
-using System.Collections.Generic;
-using System.Diagnostics;
 using System.Threading;
-using ICSharpCode.NRefactory.TypeSystem;
 
 namespace ICSharpCode.NRefactory.Utils
 {