Add test case for user defined operators

ICSharpCode.Decompiler.Tests/PrettyTestRunner.cs

@@ -312,6 +312,12 @@ namespace ICSharpCode.Decompiler.Tests
 			await RunForLibrary(cscOptions: cscOptions);
 		}
 
+		[Test]
+		public async Task Operators([ValueSource(nameof(defaultOptions))] CompilerOptions cscOptions)
+		{
+			await RunForLibrary(cscOptions: cscOptions);
+		}
+
 		[Test]
 		public async Task Generics([ValueSource(nameof(defaultOptions))] CompilerOptions cscOptions)
 		{

ICSharpCode.Decompiler.Tests/TestCases/Pretty/Operators.cs

@@ -0,0 +1,215 @@
+// Copyright (c) Daniel Grunwald
+// 
+// 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;
+
+namespace ICSharpCode.Decompiler.Tests.TestCases.Pretty
+{
+	public class AllOperators
+	{
+		public static AllOperators operator +(AllOperators a, AllOperators b)
+		{
+			return null;
+		}
+
+		public static AllOperators operator -(AllOperators a, AllOperators b)
+		{
+			return null;
+		}
+
+		public static AllOperators operator *(AllOperators a, AllOperators b)
+		{
+			return null;
+		}
+
+		public static AllOperators operator /(AllOperators a, AllOperators b)
+		{
+			return null;
+		}
+
+		public static AllOperators operator %(AllOperators a, AllOperators b)
+		{
+			return null;
+		}
+
+		public static AllOperators operator &(AllOperators a, AllOperators b)
+		{
+			return null;
+		}
+
+		public static AllOperators operator |(AllOperators a, AllOperators b)
+		{
+			return null;
+		}
+
+		public static AllOperators operator ^(AllOperators a, AllOperators b)
+		{
+			return null;
+		}
+
+		public static AllOperators operator <<(AllOperators a, int b)
+		{
+			return null;
+		}
+
+		public static AllOperators operator >>(AllOperators a, int b)
+		{
+			return null;
+		}
+
+		public static AllOperators operator ~(AllOperators a)
+		{
+			return null;
+		}
+
+		public static AllOperators operator !(AllOperators a)
+		{
+			return null;
+		}
+
+		public static AllOperators operator -(AllOperators a)
+		{
+			return null;
+		}
+
+		public static AllOperators operator +(AllOperators a)
+		{
+			return null;
+		}
+
+		public static AllOperators operator ++(AllOperators a)
+		{
+			return null;
+		}
+
+		public static AllOperators operator --(AllOperators a)
+		{
+			return null;
+		}
+
+		public static bool operator true(AllOperators a)
+		{
+			return false;
+		}
+
+		public static bool operator false(AllOperators a)
+		{
+			return false;
+		}
+
+		public static bool operator ==(AllOperators a, AllOperators b)
+		{
+			return false;
+		}
+
+		public static bool operator !=(AllOperators a, AllOperators b)
+		{
+			return false;
+		}
+
+		public static bool operator <(AllOperators a, AllOperators b)
+		{
+			return false;
+		}
+
+		public static bool operator >(AllOperators a, AllOperators b)
+		{
+			return false;
+		}
+
+		public static bool operator <=(AllOperators a, AllOperators b)
+		{
+			return false;
+		}
+
+		public static bool operator >=(AllOperators a, AllOperators b)
+		{
+			return false;
+		}
+
+		public static implicit operator AllOperators(int a)
+		{
+			return null;
+		}
+
+		public static explicit operator int(AllOperators a)
+		{
+			return 0;
+		}
+	}
+
+	public class UseAllOperators
+	{
+		private AllOperators a = new AllOperators();
+		private AllOperators b = new AllOperators();
+		private AllOperators c;
+		public void Test()
+		{
+			c = a + b;
+			c = a - b;
+			c = a * b;
+			c = a / b;
+			c = a % b;
+			c = a & b;
+			c = a | b;
+			c = a ^ b;
+			c = a << 5;
+			c = a >> 5;
+			c = ~a;
+			c = !a;
+			c = -a;
+			c = +a;
+			c = ++a;
+			c = --a;
+			if (a)
+			{
+				Console.WriteLine("a");
+			}
+			if (!a)
+			{
+				Console.WriteLine("!a");
+			}
+			if (a == b)
+			{
+				Console.WriteLine("a == b");
+			}
+			if (a != b)
+			{
+				Console.WriteLine("a != b");
+			}
+			if (a < b)
+			{
+				Console.WriteLine("a < b");
+			}
+			if (a > b)
+			{
+				Console.WriteLine("a > b");
+			}
+			if (a <= b)
+			{
+				Console.WriteLine("a <= b");
+			}
+			if (a >= b)
+			{
+				Console.WriteLine("a >= b");
+			}
+			int num = (int)a;
+			a = num;
+		}
+	}
+}