creating problematic unit-tests

Author: Sergio Ferreira

Unit-Tests/TestMyStuff/TestMyStuff.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.28010.2016
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TestMyStuff", "TestMyStuff\TestMyStuff.csproj", "{4D3DCF25-EBD5-457C-9320-86F4C0190648}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{4D3DCF25-EBD5-457C-9320-86F4C0190648}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4D3DCF25-EBD5-457C-9320-86F4C0190648}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4D3DCF25-EBD5-457C-9320-86F4C0190648}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{4D3DCF25-EBD5-457C-9320-86F4C0190648}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {5BEC1317-CC17-43B9-9382-8024F80E31D0}
+	EndGlobalSection
+EndGlobal

Unit-Tests/TestMyStuff/TestMyStuff/BigBadTests.cs

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+using System;
+using Xunit;
+
+namespace TestMyStuff
+{
+    public class BigBadTests
+    {
+        [Fact]
+        public void Test1()
+        {
+            var subject = new SubjectUnderTest();
+
+            var result = subject.SomeCalculation();
+
+            Assert.NotNull(result);
+            Assert.NotNull(result.Field);
+        }
+
+        [Fact]
+        public void Test2()
+        {
+            var subject = new SubjectUnderTest();
+
+            try
+            {
+                subject.ThrowException();
+                Assert.False(true);
+            }
+            catch (Exception e)
+            {
+                Console.WriteLine(e);
+            }
+        }
+
+        [Fact]
+        public void Test3()
+        {
+            var subject1 = new SubjectUnderTest();
+            var subject2 = new SubjectUnderTest();
+
+            var result = subject1.SomeCalculation();
+
+            if (result != null)
+            {
+                var result2 = subject2.SomeCalculation();
+                Assert.NotNull(result2);
+                Assert.NotEqual(result2, result);
+            }
+            else
+            {
+                var result2 = subject2.SomeCalculation();
+                Assert.NotNull(result2);
+            }
+        }
+
+    }
+
+    public class SubjectUnderTest
+    {
+        public ComplexObject SomeCalculation()
+        {
+            return new ComplexObject
+            {
+                Field = new SomeOtherObject()
+            };
+        }
+
+        public void ThrowException()
+        {
+            throw new Exception();
+        }
+    }
+
+    public class SomeOtherObject { }
+
+    public class ComplexObject
+    {
+        public SomeOtherObject Field { get; set; }
+    }
+}

Unit-Tests/TestMyStuff/TestMyStuff/TestMyStuff.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp2.1</TargetFramework>
+
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.8.0" />
+    <PackageReference Include="xunit" Version="2.3.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.3.1" />
+  </ItemGroup>
+
+</Project>