Add tests.

src/EditorFeatures/VisualBasicTest/InvertLogical/InvertLogicalTests.vb

+' Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.
+
+Imports Microsoft.CodeAnalysis.CodeRefactorings
+Imports Microsoft.CodeAnalysis.Editor.VisualBasic.UnitTests.CodeRefactorings
+Imports Microsoft.CodeAnalysis.VisualBasic.InvertLogical
+
+Namespace Microsoft.CodeAnalysis.Editor.VisualBasic.UnitTests.InvertLogical
+    Partial Public Class InvertLogicalTests
+        Inherits AbstractVisualBasicCodeActionTest
+
+        Protected Overrides Function CreateCodeRefactoringProvider(workspace As Workspace, parameters As TestParameters) As CodeRefactoringProvider
+            Return New VisualBasicInvertLogicalCodeRefactoringProvider()
+        End Function
+
+        <Fact, Trait(Traits.Feature, Traits.Features.CodeActionsInvertLogical)>
+        Public Async Function InvertConditional1() As Task
+            Await TestInRegularAndScriptAsync(
+"class C
+    sub M(x as boolean, a as integer, b as integer)
+        dim c = a > 10 [||]orelse b < 20
+    end sub
+end class",
+"class C
+    sub M(x as boolean, a as integer, b as integer)
+        dim c = Not (a <= 10 AndAlso b >= 20)
+    end sub
+end class")
+        End Function
+
+        <Fact, Trait(Traits.Feature, Traits.Features.CodeActionsInvertLogical)>
+        Public Async Function InvertConditional2() As Task
+            Await TestInRegularAndScriptAsync(
+"class C
+    sub M(x as boolean, a as integer, b as integer)
+        dim c = Not (a <= 10 [||]andalso b >= 20)
+    end sub
+end class",
+"class C
+    sub M(x as boolean, a as integer, b as integer)
+        dim c = a > 10 OrElse b < 20
+    end sub
+end class")
+        End Function
+
+        <Fact, Trait(Traits.Feature, Traits.Features.CodeActionsInvertLogical)>
+        Public Async Function TestTrivia() As Task
+            Await TestInRegularAndScriptAsync(
+"class C
+    sub M(x as boolean, a as integer, b as integer)
+        dim c = Not (a <= 10 [||]andalso
+                  b >= 20)
+    end sub
+end class",
+"class C
+    sub M(x as boolean, a as integer, b as integer)
+        dim c = a > 10 OrElse
+                  b < 20
+    end sub
+end class")
+        End Function
+    End Class
+End Namespace