Use simple usings

src/EditorFeatures/CSharpTest/AutomaticCompletion/AutomaticLessAndGreaterThanCompletionTests.cs

@@ -14,29 +14,23 @@ public class AutomaticLessAndGreaterThanCompletionTests : AbstractAutomaticBrace
         [WpfFact, Trait(Traits.Feature, Traits.Features.AutomaticCompletion)]
         public void Creation()
         {
-            using (var session = CreateSession("$$"))
-            {
-                Assert.NotNull(session);
-            }
+            using var session = CreateSession("$$");
+            Assert.NotNull(session);
         }
 
         [WpfFact, Trait(Traits.Feature, Traits.Features.AutomaticCompletion)]
         public void InvalidLocation_TopLevel()
         {
-            using (var session = CreateSession("$$"))
-            {
-                Assert.NotNull(session);
-            }
+            using var session = CreateSession("$$");
+            Assert.NotNull(session);
         }
 
         [WpfFact, Trait(Traits.Feature, Traits.Features.AutomaticCompletion)]
         public void InvalidLocation_TopLevel2()
         {
-            using (var session = CreateSession("using System;$$"))
-            {
-                Assert.NotNull(session);
-                CheckStart(session.Session, expectValidSession: false);
-            }
+            using var session = CreateSession("using System;$$");
+            Assert.NotNull(session);
+            CheckStart(session.Session, expectValidSession: false);
         }
 
         [WpfFact, Trait(Traits.Feature, Traits.Features.AutomaticCompletion)]
@@ -44,11 +38,9 @@ public void Class_TypeParameter()
         {
             var code = @"class C$$";
 
-            using (var session = CreateSession(code))
-            {
-                Assert.NotNull(session);
-                CheckStart(session.Session);
-            }
+            using var session = CreateSession(code);
+            Assert.NotNull(session);
+            CheckStart(session.Session);
         }
 
         [WpfFact, Trait(Traits.Feature, Traits.Features.AutomaticCompletion)]
@@ -59,11 +51,9 @@ public void Method_TypeParameter()
     void Method$$
 }";
 
-            using (var session = CreateSession(code))
-            {
-                Assert.NotNull(session);
-                CheckStart(session.Session);
-            }
+            using var session = CreateSession(code);
+            Assert.NotNull(session);
+            CheckStart(session.Session);
         }
 
         [WpfFact, Trait(Traits.Feature, Traits.Features.AutomaticCompletion)]
@@ -71,12 +61,10 @@ public void Class_TypeParameter_Delete()
         {
             var code = @"class C$$";
 
-            using (var session = CreateSession(code))
-            {
-                Assert.NotNull(session);
-                CheckStart(session.Session);
-                CheckBackspace(session.Session);
-            }
+            using var session = CreateSession(code);
+            Assert.NotNull(session);
+            CheckStart(session.Session);
+            CheckBackspace(session.Session);
         }
 
         [WpfFact, Trait(Traits.Feature, Traits.Features.AutomaticCompletion)]
@@ -84,12 +72,10 @@ public void Class_TypeParameter_Tab()
         {
             var code = @"class C$$";
 
-            using (var session = CreateSession(code))
-            {
-                Assert.NotNull(session);
-                CheckStart(session.Session);
-                CheckTab(session.Session);
-            }
+            using var session = CreateSession(code);
+            Assert.NotNull(session);
+            CheckStart(session.Session);
+            CheckTab(session.Session);
         }
 
         [WpfFact, Trait(Traits.Feature, Traits.Features.AutomaticCompletion)]
@@ -97,12 +83,10 @@ public void Class_TypeParameter_GreaterThan()
         {
             var code = @"class C$$";
 
-            using (var session = CreateSession(code))
-            {
-                Assert.NotNull(session);
-                CheckStart(session.Session);
-                CheckOverType(session.Session);
-            }
+            using var session = CreateSession(code);
+            Assert.NotNull(session);
+            CheckStart(session.Session);
+            CheckOverType(session.Session);
         }
 
         [WpfFact, Trait(Traits.Feature, Traits.Features.AutomaticCompletion)]
@@ -110,11 +94,9 @@ public void Multiple_Invalid()
         {
             var code = @"class C<$$>";
 
-            using (var session = CreateSession(code))
-            {
-                Assert.NotNull(session);
-                CheckStart(session.Session, expectValidSession: false);
-            }
+            using var session = CreateSession(code);
+            Assert.NotNull(session);
+            CheckStart(session.Session, expectValidSession: false);
         }
 
         [WpfFact, Trait(Traits.Feature, Traits.Features.AutomaticCompletion)]
@@ -125,11 +107,9 @@ public void Multiple_Nested()
     C<C$$>
 }";
 
-            using (var session = CreateSession(code))
-            {
-                Assert.NotNull(session);
-                CheckStart(session.Session);
-            }
+            using var session = CreateSession(code);
+            Assert.NotNull(session);
+            CheckStart(session.Session);
         }
 
         [WpfFact, Trait(Traits.Feature, Traits.Features.AutomaticCompletion)]
@@ -143,11 +123,9 @@ void Method()
         var b = i $$
     }
 }";
-            using (var session = CreateSession(code))
-            {
-                Assert.NotNull(session);
-                CheckStart(session.Session, expectValidSession: false);
-            }
+            using var session = CreateSession(code);
+            Assert.NotNull(session);
+            CheckStart(session.Session, expectValidSession: false);
         }
 
         [WpfFact, Trait(Traits.Feature, Traits.Features.AutomaticCompletion)]
@@ -160,11 +138,9 @@ void Method()
         var a = new List$$
     }
 }";
-            using (var session = CreateSession(code))
-            {
-                Assert.NotNull(session);
-                CheckStart(session.Session);
-            }
+            using var session = CreateSession(code);
+            Assert.NotNull(session);
+            CheckStart(session.Session);
         }
 
         [WpfFact, Trait(Traits.Feature, Traits.Features.AutomaticCompletion)]
@@ -177,11 +153,9 @@ void Method()
         var a = typeof(List$$
     }
 }";
-            using (var session = CreateSession(code))
-            {
-                Assert.NotNull(session);
-                CheckStart(session.Session);
-            }
+            using var session = CreateSession(code);
+            Assert.NotNull(session);
+            CheckStart(session.Session);
         }
 
         [WorkItem(531637, "http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/531637")]
@@ -192,13 +166,11 @@ public void TypeParameterReturnType()
 {
     List$$
 }";
-            using (var session = CreateSession(code))
-            {
-                Assert.NotNull(session);
-                CheckStart(session.Session);
-                Type(session.Session, "int");
-                CheckOverType(session.Session);
-            }
+            using var session = CreateSession(code);
+            Assert.NotNull(session);
+            CheckStart(session.Session);
+            Type(session.Session, "int");
+            CheckOverType(session.Session);
         }
 
         [WorkItem(531637, "http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/531637")]
@@ -209,13 +181,11 @@ public void TypeParameterInDecl()
 {
     void List$$
 }";
-            using (var session = CreateSession(code))
-            {
-                Assert.NotNull(session);
-                CheckStart(session.Session);
-                Type(session.Session, "T");
-                CheckOverType(session.Session);
-            }
+            using var session = CreateSession(code);
+            Assert.NotNull(session);
+            CheckStart(session.Session);
+            Type(session.Session, "T");
+            CheckOverType(session.Session);
         }
 
         [WorkItem(531637, "http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/531637")]
@@ -226,13 +196,11 @@ public void TypeParameterInDeclWith()
 {
     async Task$$
 }";
-            using (var session = CreateSession(code))
-            {
-                Assert.NotNull(session);
-                CheckStart(session.Session);
-                Type(session.Session, "int");
-                CheckOverType(session.Session);
-            }
+            using var session = CreateSession(code);
+            Assert.NotNull(session);
+            CheckStart(session.Session);
+            Type(session.Session, "int");
+            CheckOverType(session.Session);
         }
 
         [WorkItem(530864, "http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/530864")]
@@ -248,13 +216,11 @@ void Test()
         List$$
     }
 }";
-            using (var session = CreateSession(code))
-            {
-                Assert.NotNull(session);
-                CheckStart(session.Session);
-                Type(session.Session, "int");
-                CheckOverType(session.Session);
-            }
+            using var session = CreateSession(code);
+            Assert.NotNull(session);
+            CheckStart(session.Session);
+            Type(session.Session, "int");
+            CheckOverType(session.Session);
         }
 
         [WorkItem(530864, "http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/530864")]
@@ -268,11 +234,9 @@ void Test()
         List$$
     }
 }";
-            using (var session = CreateSession(code))
-            {
-                Assert.NotNull(session);
-                CheckStart(session.Session, expectValidSession: false);
-            }
+            using var session = CreateSession(code);
+            Assert.NotNull(session);
+            CheckStart(session.Session, expectValidSession: false);
         }
 
         [WorkItem(1628, "https://github.com/dotnet/roslyn/issues/1628")]
@@ -287,11 +251,9 @@ void Test(int[] args)
         var a = args[0]$$
     }
 }";
-            using (var session = CreateSession(code))
-            {
-                Assert.NotNull(session);
-                CheckStart(session.Session, expectValidSession: false);
-            }
+            using var session = CreateSession(code);
+            Assert.NotNull(session);
+            CheckStart(session.Session, expectValidSession: false);
         }
 
         [WorkItem(1628, "https://github.com/dotnet/roslyn/issues/1628")]
@@ -306,11 +268,9 @@ void Test(object[] args, object[] other)
         var a = args?.First()$$
     }
 }";
-            using (var session = CreateSession(code))
-            {
-                Assert.NotNull(session);
-                CheckStart(session.Session, expectValidSession: false);
-            }
+            using var session = CreateSession(code);
+            Assert.NotNull(session);
+            CheckStart(session.Session, expectValidSession: false);
         }
 
         [WorkItem(1628, "https://github.com/dotnet/roslyn/issues/1628")]
@@ -325,11 +285,9 @@ void Test(object[] args)
         args?.OfType$$
     }
 }";
-            using (var session = CreateSession(code))
-            {
-                Assert.NotNull(session);
-                CheckStart(session.Session);
-            }
+            using var session = CreateSession(code);
+            Assert.NotNull(session);
+            CheckStart(session.Session);
         }
 
         [WorkItem(1628, "https://github.com/dotnet/roslyn/issues/1628")]
@@ -355,13 +313,11 @@ class Inner<V>
 {
     public void Method<X>() { }
 }";
-            using (var session = CreateSession(code))
-            {
-                Assert.NotNull(session);
-                CheckStart(session.Session);
-                Type(session.Session, "int");
-                CheckOverType(session.Session);
-            }
+            using var session = CreateSession(code);
+            Assert.NotNull(session);
+            CheckStart(session.Session);
+            Type(session.Session, "int");
+            CheckOverType(session.Session);
         }
 
         [WorkItem(1628, "https://github.com/dotnet/roslyn/issues/1628")]
@@ -395,11 +351,9 @@ internal class Inner
     public Inner() { }
     public void DoSomething<V>() { }
 }";
-            using (var session = CreateSession(code))
-            {
-                Assert.NotNull(session);
-                CheckStart(session.Session);
-            }
+            using var session = CreateSession(code);
+            Assert.NotNull(session);
+            CheckStart(session.Session);
         }
 
         [WorkItem(1628, "https://github.com/dotnet/roslyn/issues/1628")]
@@ -431,11 +385,9 @@ public class Inner
 {
     public void Method<U>() { }
 }";
-            using (var session = CreateSession(code))
-            {
-                Assert.NotNull(session);
-                CheckStart(session.Session);
-            }
+            using var session = CreateSession(code);
+            Assert.NotNull(session);
+            CheckStart(session.Session);
         }
 
         internal Holder CreateSession(string code)