From f142fb15ffa0010195e9b5aca5689f5ad66b390d Mon Sep 17 00:00:00 2001
From: Fredric Silberberg <frsilb@microsoft.com>
Date: Mon, 21 Aug 2017 14:45:39 -0700
Subject: [PATCH] Added tests for out vars and deconstruction assignments.

---
 ...perationTests_ILocalReferenceExpression.cs | 94 +++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_ILocalReferenceExpression.cs

diff --git a/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_ILocalReferenceExpression.cs b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_ILocalReferenceExpression.cs
new file mode 100644
index 00000000000..c1cf652ac99
--- /dev/null
+++ b/src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_ILocalReferenceExpression.cs
@@ -0,0 +1,94 @@
+// Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.
+
+
+using Microsoft.CodeAnalysis.CSharp.Syntax;
+using Microsoft.CodeAnalysis.Test.Utilities;
+using Xunit;
+
+namespace Microsoft.CodeAnalysis.CSharp.UnitTests
+{
+    public partial class IOperationTests : SemanticModelTestBase
+    {
+        [CompilerTrait(CompilerFeature.IOperation)]
+        [Fact]
+        public void ILocalReferenceExpression_OutVar()
+        {
+            string source = @"
+using System;
+
+public class C1
+{
+    public virtual void M1()
+    {
+        M2(out /*<bind>*/var i/*</bind>*/);
+    }
+
+    public void M2(out int i )
+    {
+        i = 0;
+    }
+}
+";
+            string expectedOperationTree = @"
+ILocalReferenceExpression: i (IsDeclaration: True) (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'var i')
+";
+            var expectedDiagnostics = DiagnosticDescription.None;
+
+            VerifyOperationTreeAndDiagnosticsForTest<DeclarationExpressionSyntax>(source, expectedOperationTree, expectedDiagnostics);
+        }
+
+        [CompilerTrait(CompilerFeature.IOperation)]
+        [Fact]
+        public void ILocalReferenceExpression_DeconstructionDeclaration()
+        {
+            string source = @"
+using System;
+
+public class C1
+{
+    public virtual void M1()
+    {
+        /*<bind>*/(var i1, var i2)/*</bind>*/ = (1, 2);
+    }
+}
+";
+            string expectedOperationTree = @"
+ITupleExpression (OperationKind.TupleExpression, Type: (System.Int32 i1, System.Int32 i2)) (Syntax: '(var i1, var i2)')
+  Elements(2):
+      ILocalReferenceExpression: i1 (IsDeclaration: True) (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'var i1')
+      ILocalReferenceExpression: i2 (IsDeclaration: True) (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'var i2')
+";
+            var expectedDiagnostics = DiagnosticDescription.None;
+
+            VerifyOperationTreeAndDiagnosticsForTest<TupleExpressionSyntax>(source, expectedOperationTree, expectedDiagnostics);
+        }
+
+        [CompilerTrait(CompilerFeature.IOperation)]
+        [Fact]
+        public void ILocalReferenceExpression_DeconstructionDeclaration_AlternateSyntax()
+        {
+            string source = @"
+using System;
+
+public class C1
+{
+    public virtual void M1()
+    {
+        /*<bind>*/var (i1, i2)/*</bind>*/ = (1, 2);
+    }
+}
+";
+            string expectedOperationTree = @"
+ITupleExpression (OperationKind.TupleExpression, Type: (System.Int32 i1, System.Int32 i2)) (Syntax: 'var (i1, i2)')
+  Elements(2):
+      ILocalReferenceExpression: i1 (IsDeclaration: True) (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'i1')
+      ILocalReferenceExpression: i2 (IsDeclaration: True) (OperationKind.LocalReferenceExpression, Type: System.Int32) (Syntax: 'i2')
+";
+            var expectedDiagnostics = DiagnosticDescription.None;
+
+            VerifyOperationTreeAndDiagnosticsForTest<DeclarationExpressionSyntax>(source, expectedOperationTree, expectedDiagnostics);
+        }
+
+
+    }
+}
-- 
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