Make InsertParenthesesVisitorTests independent from indentation of the output.

ICSharpCode.NRefactory.Tests/CSharp/InsertParenthesesVisitorTests.cs

@@ -23,7 +23,8 @@ namespace ICSharpCode.NRefactory.CSharp
 			expr = expr.Clone();
 			expr.AcceptVisitor(new InsertParenthesesVisitor { InsertParenthesesForReadability = true }, null);
 			StringWriter w = new StringWriter();
-			expr.AcceptVisitor(new OutputVisitor(w, policy), null);
+			w.NewLine = " ";
+			expr.AcceptVisitor(new OutputVisitor(new TextWriterOutputFormatter(w) { IndentationString = "" }, policy), null);
 			return w.ToString();
 		}
 		
@@ -32,7 +33,8 @@ namespace ICSharpCode.NRefactory.CSharp
 			expr = expr.Clone();
 			expr.AcceptVisitor(new InsertParenthesesVisitor { InsertParenthesesForReadability = false }, null);
 			StringWriter w = new StringWriter();
-			expr.AcceptVisitor(new OutputVisitor(w, policy), null);
+			w.NewLine = " ";
+			expr.AcceptVisitor(new OutputVisitor(new TextWriterOutputFormatter(w) { IndentationString = "" }, policy), null);
 			return w.ToString();
 		}
 		
@@ -197,8 +199,8 @@ namespace ICSharpCode.NRefactory.CSharp
 				}
 			}.Invoke("ToArray");
 			
-			Assert.AreEqual("(from a in b" + Environment.NewLine + "select a.c ()).ToArray ()", InsertRequired(expr));
-			Assert.AreEqual("(from a in b" + Environment.NewLine + "select a.c ()).ToArray ()", InsertReadable(expr));
+			Assert.AreEqual("( from a in b select a.c ()).ToArray ()", InsertRequired(expr));
+			Assert.AreEqual("( from a in b select a.c ()).ToArray ()", InsertReadable(expr));
 		}
 		
 		[Test]
@@ -221,12 +223,10 @@ namespace ICSharpCode.NRefactory.CSharp
 				query.Clone()
 			);
 			
-			Assert.AreEqual("(from a in b" + Environment.NewLine +
-			                "select a) + from a in b" + Environment.NewLine +
-			                "select a", InsertRequired(expr));
-			Assert.AreEqual("(from a in b" + Environment.NewLine +
-			                "select a) + (from a in b" + Environment.NewLine +
-			                "select a)", InsertReadable(expr));
+			Assert.AreEqual("( from a in b select a) + " +
+			                " from a in b select a", InsertRequired(expr));
+			Assert.AreEqual("( from a in b select a) + " +
+			                "( from a in b select a)", InsertReadable(expr));
 		}
 		
 		[Test]
@@ -244,10 +244,8 @@ namespace ICSharpCode.NRefactory.CSharp
 				}
 			}.IsType(new PrimitiveType("int"));
 			
-			Assert.AreEqual("(from a in b" + Environment.NewLine +
-			                "select a) is int", InsertRequired(expr));
-			Assert.AreEqual("(from a in b" + Environment.NewLine +
-			                "select a) is int", InsertReadable(expr));
+			Assert.AreEqual("( from a in b select a) is int", InsertRequired(expr));
+			Assert.AreEqual("( from a in b select a) is int", InsertReadable(expr));
 		}
 		
 		[Test]

ICSharpCode.NRefactory/CSharp/OutputVisitor/TextWriterOutputFormatter.cs

@@ -15,11 +15,14 @@ namespace ICSharpCode.NRefactory.CSharp
 		int indentation;
 		bool needsIndent = true;
 		
+		public string IndentationString { get; set; }
+		
 		public TextWriterOutputFormatter(TextWriter textWriter)
 		{
 			if (textWriter == null)
 				throw new ArgumentNullException("textWriter");
 			this.textWriter = textWriter;
+			this.IndentationString = "\t";
 		}
 		
 		public void WriteIdentifier(string ident)
@@ -67,7 +70,7 @@ namespace ICSharpCode.NRefactory.CSharp
 			if (needsIndent) {
 				needsIndent = false;
 				for (int i = 0; i < indentation; i++) {
-					textWriter.Write('\t');
+					textWriter.Write(this.IndentationString);
 				}
 			}
 		}