UnassignedVariableUsageInspection tests

Author: Hosch250

RubberduckTests/Inspections/UnassignedVariableUsageInspectionTests.cs

@@ -0,0 +1,138 @@
+using System.Linq;
+using System.Threading;
+using Microsoft.Vbe.Interop;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Moq;
+using Rubberduck.Inspections;
+using Rubberduck.Parsing;
+using Rubberduck.Parsing.VBA;
+using Rubberduck.VBEditor.Extensions;
+using Rubberduck.VBEditor.VBEHost;
+using RubberduckTests.Mocks;
+
+namespace RubberduckTests.Inspections
+{
+    [TestClass]
+    public class UnassignedVariableUsageInspectionTests
+    {
+        [TestMethod]
+        [TestCategory("Inspections")]
+        public void UnassignedVariableUsage_ReturnsResult()
+        {
+            const string inputCode = 
+@"Sub Foo()
+    Dim b As Boolean
+    Dim bb As Boolean
+    bb = b
+End Sub";
+
+            //Arrange
+            var builder = new MockVbeBuilder();
+            var project = builder.ProjectBuilder("VBAProject", vbext_ProjectProtection.vbext_pp_none)
+                .AddComponent("MyClass", vbext_ComponentType.vbext_ct_ClassModule, inputCode)
+                .Build();
+            var vbe = builder.AddProject(project).Build();
+
+            var mockHost = new Mock<IHostApplication>();
+            mockHost.SetupAllProperties();
+            var parser = MockParser.Create(vbe.Object, new RubberduckParserState(vbe.Object, new Mock<ISinks>().Object));
+
+            parser.Parse(new CancellationTokenSource());
+            if (parser.State.Status >= ParserState.Error) { Assert.Inconclusive("Parser Error"); }
+
+            var inspection = new UnassignedVariableUsageInspection(parser.State);
+            var inspectionResults = inspection.GetInspectionResults();
+
+            Assert.AreEqual(1, inspectionResults.Count());
+        }
+
+        [TestMethod]
+        [TestCategory("Inspections")]
+        public void UnassignedVariableUsage_DoesNotReturnResult()
+        {
+            const string inputCode =
+@"Sub Foo()
+    Dim b As Boolean
+    Dim bb As Boolean
+    b = True
+    bb = b
+End Sub";
+
+            //Arrange
+            var builder = new MockVbeBuilder();
+            var project = builder.ProjectBuilder("VBAProject", vbext_ProjectProtection.vbext_pp_none)
+                .AddComponent("MyClass", vbext_ComponentType.vbext_ct_ClassModule, inputCode)
+                .Build();
+            var vbe = builder.AddProject(project).Build();
+
+            var mockHost = new Mock<IHostApplication>();
+            mockHost.SetupAllProperties();
+            var parser = MockParser.Create(vbe.Object, new RubberduckParserState(vbe.Object, new Mock<ISinks>().Object));
+
+            parser.Parse(new CancellationTokenSource());
+            if (parser.State.Status >= ParserState.Error) { Assert.Inconclusive("Parser Error"); }
+
+            var inspection = new UnassignedVariableUsageInspection(parser.State);
+            var inspectionResults = inspection.GetInspectionResults();
+
+            Assert.IsFalse(inspectionResults.Any());
+        }
+
+        [TestMethod]
+        [TestCategory("Inspections")]
+        public void UnassignedVariableUsage_QuickFixWorks()
+        {
+            const string inputCode =
+@"Sub Foo()
+    Dim b As Boolean
+    Dim bb As Boolean
+    bb = b
+End Sub";
+
+            const string expectedCode =
+@"Sub Foo()
+    Dim b As Boolean
+    Dim bb As Boolean
+    TODOTODO = TODO
+End Sub";
+
+            //Arrange
+            var builder = new MockVbeBuilder();
+            VBComponent component;
+            var vbe = builder.BuildFromSingleStandardModule(inputCode, out component);
+            var project = vbe.Object.VBProjects.Item(0);
+            var module = project.VBComponents.Item(0).CodeModule;
+            var mockHost = new Mock<IHostApplication>();
+            mockHost.SetupAllProperties();
+            var parser = MockParser.Create(vbe.Object, new RubberduckParserState(vbe.Object, new Mock<ISinks>().Object));
+
+            parser.Parse(new CancellationTokenSource());
+            if (parser.State.Status >= ParserState.Error) { Assert.Inconclusive("Parser Error"); }
+
+            var inspection = new UnassignedVariableUsageInspection(parser.State);
+            var inspectionResults = inspection.GetInspectionResults();
+
+            inspectionResults.First().QuickFixes.First().Fix();
+            
+            Assert.AreEqual(expectedCode, module.Lines());
+        }
+
+        [TestMethod]
+        [TestCategory("Inspections")]
+        public void InspectionType()
+        {
+            var inspection = new UnassignedVariableUsageInspection(null);
+            Assert.AreEqual(CodeInspectionType.CodeQualityIssues, inspection.InspectionType);
+        }
+
+        [TestMethod]
+        [TestCategory("Inspections")]
+        public void InspectionName()
+        {
+            const string inspectionName = "UnassignedVariableUsageInspection";
+            var inspection = new UnassignedVariableUsageInspection(null);
+
+            Assert.AreEqual(inspectionName, inspection.Name);
+        }
+    }
+}

RubberduckTests/RubberduckTests.csproj

@@ -98,6 +98,7 @@
     <Compile Include="Inspections\ImplicitActiveSheetReferenceInspectionTests.cs" />
     <Compile Include="Inspections\MultipleFolderAnnotationsInspectionTests.cs" />
     <Compile Include="Inspections\ObjectVariableNotSetInpsectionTests.cs" />
+    <Compile Include="Inspections\UnassignedVariableUsageInspectionTests.cs" />
     <Compile Include="Inspections\WriteOnlyPropertyInspectionTests.cs" />
     <Compile Include="MockParser.cs" />
     <Compile Include="Inspections\MoveFieldCloserToUsageInspectionTests.cs" />