v1.6.0 (#24)

- Add new rules:
  - PosInfoMoq2007: The `As<T>()` method can be used only with interfaces (fixes: #19).
  - PosInfoMoq2008: The `Verify()` method must be used only on overridable members.
- Add the support of static methods `VerifyAll()` and `Verify()` for the PosInfoMoq2000 rule (fixes: #20).
- Various optimizations to increase speed of analysis.
- Various optimizations to reduce memory usage.
- Add hyperlink to the documentation of the rules.

Author: GillesTourreau

.github/workflows/github-actions-release.yml

@@ -7,7 +7,7 @@ on:
         type: string
         description: The version of the library
         required: true
-        default: 1.5.0
+        default: 1.6.0
       VersionSuffix:
         type: string
         description: The version suffix of the library (for example rc.1)

Directory.Build.props

@@ -34,7 +34,7 @@
 
   <!-- Common NuGet packages -->
   <ItemGroup>
-    <PackageReference Include="StyleCop.Analyzers" Version="1.1.118">
+    <PackageReference Include="StyleCop.Analyzers" Version="1.2.0-beta.556">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>

PosInformatique.Moq.Analyzers.sln

@@ -40,6 +40,8 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Compilation", "Compilation"
 		docs\Compilation\PosInfoMoq2004.md = docs\Compilation\PosInfoMoq2004.md
 		docs\Compilation\PosInfoMoq2005.md = docs\Compilation\PosInfoMoq2005.md
 		docs\Compilation\PosInfoMoq2006.md = docs\Compilation\PosInfoMoq2006.md
+		docs\Compilation\PosInfoMoq2007.md = docs\Compilation\PosInfoMoq2007.md
+		docs\Compilation\PosInfoMoq2008.md = docs\Compilation\PosInfoMoq2008.md
 	EndProjectSection
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Moq.Analyzers.Sandbox", "tests\Moq.Analyzers.Sandbox\Moq.Analyzers.Sandbox.csproj", "{07F970A1-1477-4D4C-B233-C9B4DA6E3AD6}"

README.md

@@ -44,4 +44,8 @@ All the rules of this category should not be disabled (or changed their severity
 | [PosInfoMoq2004: Constructor arguments cannot be passed for interface mocks](docs/Compilation/PosInfoMoq2004.md) | No arguments can be passed to a mocked interface. |
 | [PosInfoMoq2005: Constructor arguments must match the constructors of the mocked class](docs/Compilation/PosInfoMoq2005.md) | When instantiating a `Mock<T>`, the parameters must match one of the constructors of the mocked type.  |
 | [PosInfoMoq2006: The Protected().Setup() method must be use with overridable protected or internal methods](docs/Compilation/PosInfoMoq2006.md) | When using the `Protected().Setup()` configuration, the method mocked must be overridable and protected or internal. |
+| [PosInfoMoq2007: The `As<T>()` method can be used only with interfaces.](docs/Compilation/PosInfoMoq2007.md) | The `As<T>()` can only be use with the interfaces. |
+| [PosInfoMoq2008: The `Verify()` method must be used only on overridable members](docs/Compilation/PosInfoMoq2008.md)) | The `Verify()` method must be applied only for overridable members. |
+
+
 

docs/Compilation/PosInfoMoq2001.md

@@ -10,7 +10,7 @@
 ## Cause
 
 The `Setup()` method must be applied only for overridable members.
-An overridable member is a **methode** or **property** which is in:
+An overridable member is a **method** or **property** which is in:
 - An `interface`.
 - A non-`sealed` `class`. In this case, the member must be:
     - Defines as `abstract`.
@@ -58,4 +58,4 @@ To fix a violation of this rule, be sure to mock a member in the `Setup()` metho
 ## When to suppress warnings
 
 Do not suppress an error from this rule. If bypassed, the execution of the unit test will be failed with a `MoqException`
-thrown with the *"Extensions methods may not be used in setup/verification expressions"* message.
+thrown with the *"Unsupported expression: m => m.Method(). Non-overridable members (here: Namespace.Class.Method) may not be used in setup / verification expressions."* message.

docs/Compilation/PosInfoMoq2006.md

@@ -23,7 +23,7 @@ and must be overridable (`virtual`, `abstract` and `override`, but not `sealed`)
 [Fact]
 public void Test()
 {
-    var service = new Mock<Service>(1, 2, 3);
+    var service = new Mock<Service>();
     service.Protected().Setup("GetData")            // The GetData() is public and can be mocked with Protected() feature.
         .Returns(10);
     service.Protected().Setup("NotExists")          // The NotExists() method does not exist.

docs/Compilation/PosInfoMoq2007.md

@@ -0,0 +1,45 @@
+# PosInfoMoq2007: The `As<T>()` method can be used only with interfaces.
+
+| Property                            | Value															|
+|-------------------------------------|-----------------------------------------------------------------|
+| **Rule ID**                         | PosInfoMoq2007													|
+| **Title**                           | The `As<T>()` method can be used only with interfaces.          |
+| **Category**                        | Compilation														|
+| **Default severity**				  | Error															|
+
+## Cause
+
+The `As<T>()` method is used with a type which is not an interface.
+
+## Rule description
+
+Moq allows to add additional implementations for mocked class (or interface) by adding additional interfaces
+with the `As<T>()` method.
+
+```csharp
+[Fact]
+public void Test()
+{
+    var service = new Mock<Service>();
+    service.As<IDisposable>()           // Add IDisposable implementation for the mocked Service class.
+        .Setup(s => s.Dispose());
+    service.As<OtherService>();         // An error will be raised, because we can't mock additional implementation of a class.
+}
+
+public abstract class Service
+{
+}
+
+public abstract class OtherService
+{
+}
+```
+
+## How to fix violations
+
+To fix a violation of this rule, use an interface when using the `As<T>()` method.
+
+## When to suppress warnings
+
+Do not suppress an error from this rule. If bypassed, the execution of the unit test will be failed with a `MoqException`
+thrown with the *"Can only add interfaces to the mock."* message.

docs/Compilation/PosInfoMoq2008.md

@@ -0,0 +1,61 @@
+# PosInfoMoq2008: The `Verify()` method must be used only on overridable members
+
+| Property                            | Value                                                         |
+|-------------------------------------|---------------------------------------------------------------|
+| **Rule ID**                         | PosInfoMoq2008                                                |
+| **Title**                           | The `Verify()` method must be used only on overridable members |
+| **Category**                        | Compilation													  |
+| **Default severity**				  | Error														  |
+
+## Cause
+
+The `Verify()` method must be applied only for overridable members.
+An overridable member is a **method** or **property** which is in:
+- An `interface`.
+- A non-`sealed` `class`. In this case, the member must be:
+    - Defines as `abstract`.
+	- Or defined as `virtual`
+
+## Rule description
+
+The `Verify()` method must be applied only for overridable members.
+
+For example, the following methods and properties can be mock and used in the `Verify()` method:
+- `IService.MethodCanBeMocked()`
+- `IService.PropertyCanBeMocked`
+- `Service.VirtualMethodCanBeMocked`
+- `Service.VirtualPropertyCanBeMocked`
+- `Service.AbstractMethodCanBeMocked`
+- `Service.AbstractPropertyCanBeMocked`
+
+```csharp
+public interface IService
+{
+	void MethodCanBeMocked();
+
+	string PropertyCanBeMocked { get; set; }
+}
+
+public abstract class Service
+{
+	public virtual void VirtualMethodCanBeMocked() { ... }
+
+	public virtual void VirtualPropertyCanBeMocked() { ... }
+
+	public abstract void AbstractMethodCanBeMocked();
+
+	public abstract void AbstractPropertyCanBeMocked();
+}
+```
+
+> **NOTE**: The extension methods can not be overriden. The C# syntax looks like a member method an interface or class, but the extension method are just simple
+static methods which can not be overriden.
+
+## How to fix violations
+
+To fix a violation of this rule, be sure to mock a member in the `Verify()` method which can be overriden.
+
+## When to suppress warnings
+
+Do not suppress an error from this rule. If bypassed, the execution of the unit test will be failed with a `MoqException`
+thrown with the *"Unsupported expression: m => m.Method(). Non-overridable members (here: Namespace.Class.Method) may not be used in setup / verification expressions."* message.

src/Moq.Analyzers/AnalyzerReleases.Shipped.md

@@ -1,4 +1,13 @@
-## Release 1.5.0
+## Release 1.6.0
+
+### New Rules
+
+Rule ID | Category | Severity | Notes
+--------|----------|----------|--------------------
+PosInfoMoq2007 | Compilation | Error | The `As<T>()` method can be used only with interfaces.
+PosInfoMoq2008 | Compilation | Error | The `Verify()` method can be used only on overridable members.
+
+## Release 1.5.0
 
 ### New Rules
 

src/Moq.Analyzers/Analyzers/AsMustBeUsedWithInterfaceAnalyzer.cs

@@ -0,0 +1,67 @@
+//-----------------------------------------------------------------------
+// <copyright file="AsMustBeUsedWithInterfaceAnalyzer.cs" company="P.O.S Informatique">
+//     Copyright (c) P.O.S Informatique. All rights reserved.
+// </copyright>
+//-----------------------------------------------------------------------
+
+namespace PosInformatique.Moq.Analyzers
+{
+    using System.Collections.Immutable;
+    using Microsoft.CodeAnalysis;
+    using Microsoft.CodeAnalysis.CSharp;
+    using Microsoft.CodeAnalysis.CSharp.Syntax;
+    using Microsoft.CodeAnalysis.Diagnostics;
+
+    [DiagnosticAnalyzer(LanguageNames.CSharp)]
+    public class AsMustBeUsedWithInterfaceAnalyzer : DiagnosticAnalyzer
+    {
+        internal static readonly DiagnosticDescriptor Rule = new DiagnosticDescriptor(
+            "PosInfoMoq2007",
+            "The As<T>() method can be used only with interfaces",
+            "The As<T>() method can be used only with interfaces",
+            "Compilation",
+            DiagnosticSeverity.Error,
+            isEnabledByDefault: true,
+            description: "The As<T>() method can be used only with interfaces.",
+            helpLinkUri: "https://posinformatique.github.io/PosInformatique.Moq.Analyzers/docs/Compilation/PosInfoMoq2007.html");
+
+        public override ImmutableArray<DiagnosticDescriptor> SupportedDiagnostics => ImmutableArray.Create(Rule);
+
+        public override void Initialize(AnalysisContext context)
+        {
+            context.ConfigureGeneratedCodeAnalysis(GeneratedCodeAnalysisFlags.None);
+            context.EnableConcurrentExecution();
+
+            context.RegisterSyntaxNodeAction(Analyze, SyntaxKind.InvocationExpression);
+        }
+
+        private static void Analyze(SyntaxNodeAnalysisContext context)
+        {
+            var invocationExpression = (InvocationExpressionSyntax)context.Node;
+
+            var moqSymbols = MoqSymbols.FromCompilation(context.Compilation);
+
+            if (moqSymbols is null)
+            {
+                return;
+            }
+
+            var moqExpressionAnalyzer = new MoqExpressionAnalyzer(moqSymbols, context.SemanticModel);
+
+            var asMethodType = moqExpressionAnalyzer.ExtractAsMethodType(invocationExpression, out var typeSyntax, context.CancellationToken);
+
+            if (asMethodType is null)
+            {
+                return;
+            }
+
+            if (asMethodType.TypeKind == TypeKind.Interface)
+            {
+                return;
+            }
+
+            var diagnostic = Diagnostic.Create(Rule, typeSyntax!.GetLocation());
+            context.ReportDiagnostic(diagnostic);
+        }
+    }
+}