Initial checkin

IDEHelper/Tests/src/NullConditional.bf

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+#pragma warning disable 168
+
+using System;
+
+namespace Tests
+{
+	class CondB
+	{
+		public int mInt = 123;
+
+		public int Val
+		{
+			get
+			{
+				 return 234;
+			}
+		}
+
+		public int GetVal()
+		{
+			return 345;
+		}
+	}
+
+	class CondA
+	{
+		public CondB mCondB;
+		public CondB mCondB2;
+
+		CondB CondBVal
+		{
+			get
+			{
+				return mCondB;
+			}
+		}
+
+		CondB GetCondB()
+		{
+			return mCondB;
+		}
+	}
+
+	class NullConditional
+	{
+		[Test]
+		static void TestBasic()
+		{
+			CondA ca = scope CondA();
+			ca.mCondB = scope CondB();
+			if (int i = ca?.mCondB?.mInt)
+				Test.Assert(i == 123);
+			else
+				Test.FatalError();
+
+			if (let i = ca?.mCondB?.mInt)
+			{
+				Test.Assert(typeof(decltype(i)) == typeof(int));
+				Test.Assert(i == 123);
+			}
+			else
+				Test.FatalError();
+
+			var i2 = ca?.mCondB?.Val;
+			Test.Assert(i2.Value == 234);
+
+			var i3 = ca?.mCondB?.GetVal();
+			Test.Assert(i3.Value == 345);
+
+			if (int i4 = ca?.mCondB2?.mInt)
+			{
+				Test.FatalError();
+			}
+		}
+
+		[Test]
+		static void TestParen()
+		{
+			CondA ca = scope CondA();
+			ca.mCondB = scope CondB();
+
+			let i = (ca?.mCondB?.mInt).GetValueOrDefault();
+			Test.Assert(i == 123);
+
+			let i2 = (ca?.mCondB2?.mInt).GetValueOrDefault();
+			Test.Assert(i2 == 0);
+		}
+	}
+}