fix: exception in codefix of explicit mock behavior

[Youssef1313]

Summary by CodeRabbit

• Bug Fixes
  • Improved handling of object creation expressions for broader compatibility in argument insertion and replacement scenarios.
• Tests
  • Expanded test coverage to include cases with target-typed new expressions for mock object creation, ensuring correct behavior with various MockBehavior arguments.

[CLAassistant]

All committers have signed the CLA.

[coderabbitai]

📝 Walkthrough

Walkthrough

The updates generalize type checks in internal logic from ObjectCreationExpressionSyntax to its base class and update exception messages accordingly. Additionally, new test data is added to cover scenarios involving target-typed new expressions for mock object creation, enhancing test coverage for these cases.

Changes

Cohort / File(s)	Change Summary
Type Generalization in Syntax Handling src/CodeFixes/SyntaxGeneratorExtensions.cs	Internal logic updated to check for BaseObjectCreationExpressionSyntax instead of ObjectCreationExpressionSyntax in two methods. Exception messages are also updated to reference the new type. No changes to method signatures or public APIs.
Expanded Test Coverage for Target-Typed New tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs	Additional test data introduced to cover target-typed new expressions for mock creation, including cases with and without explicit MockBehavior arguments. No changes to public entity declarations; only new test cases are added to an existing public method.

Sequence Diagram(s)

sequenceDiagram
    participant TestRunner
    participant CodeFix
    participant SyntaxGeneratorExtensions

    TestRunner->>CodeFix: Run code fix for mock creation
    CodeFix->>SyntaxGeneratorExtensions: InsertArguments/ReplaceArgument with syntax node
    SyntaxGeneratorExtensions->>SyntaxGeneratorExtensions: Check if syntax is BaseObjectCreationExpressionSyntax
    SyntaxGeneratorExtensions-->>CodeFix: Perform argument insertion/replacement or throw exception
    CodeFix-->>TestRunner: Return fixed code

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Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Suggested labels

feature

Suggested reviewers

• MattKotsenas

Note

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📥 Commits

Reviewing files that changed from the base of the PR and between cc183e3 and 6a333aa.

📒 Files selected for processing (2)

• src/CodeFixes/SyntaxGeneratorExtensions.cs (2 hunks)
• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs (2 hunks)

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📓 Path-based instructions (8)

**/*.cs

📄 CodeRabbit Inference Engine (.github/copilot-instructions.md)

Do not add or duplicate usings covered by src/Common/GlobalUsings.cs

**/*.cs: Add XML documentation for all public APIs.
Use tags for all type references in XML documentation instead of plain text.
Use for C# keywords in XML documentation.
Use for parameter references in XML documentation.
Use .. for inline code snippets in XML documentation.
All public APIs must have complete XML documentation with accurate and up-to-date information.

Files:

• src/CodeFixes/SyntaxGeneratorExtensions.cs
• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

---

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**/*.cs: I need your help tracking down and fixing some bugs that have been reported in this codebase.

I suspect the bugs are related to:

• Incorrect handling of edge cases
• Off-by-one errors in loops or array indexing
• Unexpected data types
• Uncaught exceptions
• Concurrency issues
• Improper configuration settings

To diagnose:

1. Review the code carefully and systematically
2. Trace the relevant code paths
3. Consider boundary conditions and potential error states
4. Look for antipatterns that tend to cause bugs
5. Run the code mentally with example inputs
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When you find potential bugs, for each one provide:

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4. Suggestions for how to fix it

After analysis, please update the code with your proposed fixes. Try to match the existing code style. Add regression tests if possible to prevent the bugs from recurring.

I appreciate your diligence and attention to detail! Let me know if you need any clarification on the intended behavior of the code.

Files:

• src/CodeFixes/SyntaxGeneratorExtensions.cs
• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

{src/Analyzers/**/*.cs,src/CodeFixes/**/*.cs,src/Common/**/*.cs}

📄 CodeRabbit Inference Engine (.github/copilot-instructions.md)

Place new analyzers in src/Analyzers/, code fixes in src/CodeFixes/, and shared logic in src/Common/

Files:

• src/CodeFixes/SyntaxGeneratorExtensions.cs

**/*.{cs,csproj,sln}

📄 CodeRabbit Inference Engine (CONTRIBUTING.md)

Build with 'dotnet build /p:PedanticMode=true'. All warnings must be treated as errors. PRs that do not build cleanly will be closed.

Files:

• src/CodeFixes/SyntaxGeneratorExtensions.cs
• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

src/**/*.cs

📄 CodeRabbit Inference Engine (CONTRIBUTING.md)

All diagnostic spans in Roslyn analyzers MUST be character-precise. A test failure related to a diagnostic span is a CRITICAL FAILURE and must be addressed immediately.

Files:

• src/CodeFixes/SyntaxGeneratorExtensions.cs

{src/Analyzers/*Analyzer.cs,src/CodeFixes/*Fixer.cs,tests/Moq.Analyzers.Test/*AnalyzerTests.cs,tests/Moq.Analyzers.Test/*CodeFixTests.cs}

📄 CodeRabbit Inference Engine (.github/copilot-instructions.md)

Use [Description]Analyzer.cs, [Description]Fixer.cs, [Description]AnalyzerTests.cs, [Description]CodeFixTests.cs for new components

Files:

• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

tests/Moq.Analyzers.Test/*CodeFixTests.cs

📄 CodeRabbit Inference Engine (.github/copilot-instructions.md)

Use the [MemberData]-annotated [Theory] pattern with a public static IEnumerable<object[]> data source for code fix tests

Files:

• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

tests/Moq.Analyzers.Test/**/*.cs

📄 CodeRabbit Inference Engine (.github/copilot-instructions.md)

Add or update unit tests in tests/Moq.Analyzers.Test/ for every analyzer or code fix change

Files:

• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

tests/**/*.cs

📄 CodeRabbit Inference Engine (CONTRIBUTING.md)

tests/**/*.cs: Run all unit tests using 'dotnet test --settings ./build/targets/tests/test.runsettings'. All tests must pass.
Every analyzer and fixer must have comprehensive unit tests.
Use the project's data-driven test pattern for code fix tests: provide a public static IEnumerable<object[]> data source, use [Theory] and [MemberData], and define a static Template function with placeholders.
In code fix tests, the code that triggers the analyzer MUST be wrapped with the diagnostic marker syntax (e.g., {|Moq1210:...|}).
Use AllAnalyzersVerifier for tests that verify code patterns don't trigger unwanted diagnostics from any Moq analyzer.
Group analyzer tests by Moq version compatibility: place tests for features only available in Moq 4.18.4+ in a 'new' group, and tests for features available in both 4.8.2 and 4.18.4 in a 'both' or 'old' group.
Do not include tests for APIs or patterns that do not exist in the targeted Moq version; such tests will fail at compile time.
Only set up or verify virtual, abstract, or interface members in Moq analyzer tests. Do not attempt to set up or verify non-virtual, static, or sealed members.
Use SetupAdd and SetupRemove only for virtual events, and only in Moq 4.18.4+.
Setups for explicit interface implementations must use the correct cast syntax (e.g., ((IMyInterface)x).Method()).
Use .Protected().Setup(...) only for protected virtual members, and only in Moq 4.18.4+.
Do not add analyzer tests for static, const, or readonly members, as Moq cannot mock or set up these members.
Always include both Task and ValueTask scenarios in analyzer tests for async methods.
If your analyzer or code fix interacts with Callback or SetupSequence, ensure you have tests for both single and sequence setups.
Always specify and test for both MockBehavior.Default and MockBehavior.Strict where relevant in analyzer tests.
If mocking internal members, ensure [assembly: InternalsVisibleTo("DynamicProxyGenAssembly2")] is present in the test assembly.

Files:

• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

🧠 Learnings (24)

📓 Common learnings

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: CONTRIBUTING.md:0-0
Timestamp: 2025-07-27T02:45:02.136Z
Learning: If your PR changes or adds analyzer tests, include a note in the PR description about which Moq versions are targeted and how test data is grouped accordingly.

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: .github/copilot-instructions.md:0-0
Timestamp: 2025-07-27T02:44:39.596Z
Learning: Applies to tests/Moq.Analyzers.Test/**/*.cs : Add or update unit tests in tests/Moq.Analyzers.Test/ for every analyzer or code fix change

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: CONTRIBUTING.md:0-0
Timestamp: 2025-07-27T02:45:02.136Z
Learning: Applies to tests/**/*.cs : In code fix tests, the code that triggers the analyzer MUST be wrapped with the diagnostic marker syntax (e.g., {|Moq1210:...|}).

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: CONTRIBUTING.md:0-0
Timestamp: 2025-07-27T02:45:02.136Z
Learning: Applies to tests/Moq.Analyzers.Benchmarks/**/*.cs : Performance-sensitive changes require benchmark validation. Run performance tests locally before submitting PRs and include performance regression analysis in PR description.

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: .github/copilot-instructions.md:0-0
Timestamp: 2025-07-27T02:44:39.596Z
Learning: Applies to {src/Analyzers/*Analyzer.cs,src/CodeFixes/*Fixer.cs,tests/Moq.Analyzers.Test/*AnalyzerTests.cs,tests/Moq.Analyzers.Test/*CodeFixTests.cs} : Use [Description]Analyzer.cs, [Description]Fixer.cs, [Description]AnalyzerTests.cs, [Description]CodeFixTests.cs for new components

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: .github/copilot-instructions.md:0-0
Timestamp: 2025-07-27T02:44:39.596Z
Learning: Note Moq version compatibility for analyzer/test changes

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: CONTRIBUTING.md:0-0
Timestamp: 2025-07-27T02:45:02.136Z
Learning: Applies to tests/**/*.cs : Use AllAnalyzersVerifier for tests that verify code patterns don't trigger unwanted diagnostics from any Moq analyzer.

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: .github/copilot-instructions.md:0-0
Timestamp: 2025-06-25T12:42:47.111Z
Learning: If a Moq feature has known limitations or edge cases (e.g., explicit interface implementation, event setup), document this in the test or analyzer code.

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: CONTRIBUTING.md:0-0
Timestamp: 2025-07-27T02:45:02.136Z
Learning: Applies to **/*.{cs} : Run Codacy CLI analysis on all changed files and fix all reported issues before submitting the PR.

Learnt from: rjmurillo
PR: rjmurillo/moq.analyzers#0
File: :0-0
Timestamp: 2025-07-22T17:25:24.857Z
Learning: Applies to {src/Analyzers/**/*.cs,tests/**/*.cs}: Moq protected member APIs that need analyzer validation include: Setup, SetupSequence, SetupGet<T>, SetupSet<T>, Verify, VerifyGet<T>, VerifySet<T>, and As<T>() for interface mapping. All protected members must be virtual or abstract to be mockable.

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: CONTRIBUTING.md:0-0
Timestamp: 2025-07-27T02:45:02.136Z
Learning: Applies to tests/**/*.cs : Always specify and test for both MockBehavior.Default and MockBehavior.Strict where relevant in analyzer tests.

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: CONTRIBUTING.md:0-0
Timestamp: 2025-07-27T02:45:02.136Z
Learning: Applies to tests/**/*.cs : Do not include tests for APIs or patterns that do not exist in the targeted Moq version; such tests will fail at compile time.

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: CONTRIBUTING.md:0-0
Timestamp: 2025-07-27T02:45:02.136Z
Learning: Applies to tests/**/*.cs : Setups for explicit interface implementations must use the correct cast syntax (e.g., ((IMyInterface)x).Method()).

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: .github/copilot-instructions.md:0-0
Timestamp: 2025-06-25T12:42:47.111Z
Learning: Setups for explicit interface implementations must use the correct cast syntax (e.g., ((IMyInterface)x).Method()), and only test these scenarios if the Moq version supports them.

Learnt from: rjmurillo
PR: rjmurillo/moq.analyzers#0
File: :0-0
Timestamp: 2025-07-22T17:25:24.857Z
Learning: Applies to {src/Analyzers/**/*.cs,tests/**/*.cs}: For Moq protected member setups using string-based overloads (e.g., `mock.Protected().Setup("MethodName", ...)`), use `ItExpr` matchers instead of `It` matchers. When using `As<T>()` interface mapping, regular `It` matchers are allowed in lambda expressions.

Learnt from: rjmurillo
PR: rjmurillo/moq.analyzers#0
File: :0-0
Timestamp: 2025-07-22T17:25:24.857Z
Learning: Applies to {src/Analyzers/**/*.cs,tests/**/*.cs}: For Moq protected member setups using string-based overloads (e.g., `mock.Protected().Setup("MethodName", ...)`), use `ItExpr` matchers instead of `It` matchers. When using `As<T>()` interface mapping, regular `It` matchers are allowed in lambda expressions.

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: .github/copilot-instructions.md:0-0
Timestamp: 2025-06-25T12:42:47.111Z
Learning: When testing code fixes that modify a class member, use a data-driven pattern: a public static IEnumerable<object[]> data source, a [Theory] test method with [MemberData], a static Template function with placeholders, and Verify.VerifyCodeFixAsync.

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: CONTRIBUTING.md:0-0
Timestamp: 2025-07-27T02:45:02.136Z
Learning: Applies to tests/**/*.cs : If mocking internal members, ensure [assembly: InternalsVisibleTo("DynamicProxyGenAssembly2")] is present in the test assembly.

📚 Learning: applies to tests/**/*.cs : setups for explicit interface implementations must use the correct cast s...

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: CONTRIBUTING.md:0-0
Timestamp: 2025-07-27T02:45:02.136Z
Learning: Applies to tests/**/*.cs : Setups for explicit interface implementations must use the correct cast syntax (e.g., ((IMyInterface)x).Method()).

Applied to files:

• src/CodeFixes/SyntaxGeneratorExtensions.cs
• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

📚 Learning: applies to tests/**/*.cs : in code fix tests, the code that triggers the analyzer must be wrapped wi...

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: CONTRIBUTING.md:0-0
Timestamp: 2025-07-27T02:45:02.136Z
Learning: Applies to tests/**/*.cs : In code fix tests, the code that triggers the analyzer MUST be wrapped with the diagnostic marker syntax (e.g., {|Moq1210:...|}).

Applied to files:

• src/CodeFixes/SyntaxGeneratorExtensions.cs
• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

📚 Learning: applies to {src/analyzers/*analyzer.cs,src/codefixes/*fixer.cs,tests/moq.analyzers.test/*analyzertes...

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: .github/copilot-instructions.md:0-0
Timestamp: 2025-07-27T02:44:39.596Z
Learning: Applies to {src/Analyzers/*Analyzer.cs,src/CodeFixes/*Fixer.cs,tests/Moq.Analyzers.Test/*AnalyzerTests.cs,tests/Moq.Analyzers.Test/*CodeFixTests.cs} : Use [Description]Analyzer.cs, [Description]Fixer.cs, [Description]AnalyzerTests.cs, [Description]CodeFixTests.cs for new components

Applied to files:

• src/CodeFixes/SyntaxGeneratorExtensions.cs

📚 Learning: applies to tests/**/*.cs : always specify and test for both mockbehavior.default and mockbehavior.st...

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: CONTRIBUTING.md:0-0
Timestamp: 2025-07-27T02:45:02.136Z
Learning: Applies to tests/**/*.cs : Always specify and test for both MockBehavior.Default and MockBehavior.Strict where relevant in analyzer tests.

Applied to files:

• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

📚 Learning: applies to tests/moq.analyzers.test/*codefixtests.cs : use the [memberdata]-annotated [theory] patte...

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: .github/copilot-instructions.md:0-0
Timestamp: 2025-07-27T02:44:39.596Z
Learning: Applies to tests/Moq.Analyzers.Test/*CodeFixTests.cs : Use the [MemberData]-annotated [Theory] pattern with a public static IEnumerable<object[]> data source for code fix tests

Applied to files:

• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

📚 Learning: applies to tests/moq.analyzers.test/**/*.cs : add or update unit tests in tests/moq.analyzers.test/ ...

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: .github/copilot-instructions.md:0-0
Timestamp: 2025-07-27T02:44:39.596Z
Learning: Applies to tests/Moq.Analyzers.Test/**/*.cs : Add or update unit tests in tests/Moq.Analyzers.Test/ for every analyzer or code fix change

Applied to files:

• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

📚 Learning: when testing code fixes that modify a class member, use a data-driven pattern: a public static ienum...

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: .github/copilot-instructions.md:0-0
Timestamp: 2025-06-25T12:42:47.111Z
Learning: When testing code fixes that modify a class member, use a data-driven pattern: a public static IEnumerable<object[]> data source, a [Theory] test method with [MemberData], a static Template function with placeholders, and Verify.VerifyCodeFixAsync.

Applied to files:

• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

📚 Learning: always specify and test for both mockbehavior.default and mockbehavior.strict where relevant....

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: .github/copilot-instructions.md:0-0
Timestamp: 2025-06-25T12:42:47.111Z
Learning: Always specify and test for both MockBehavior.Default and MockBehavior.Strict where relevant.

Applied to files:

• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

📚 Learning: avoid unnecessary complexity in test types and mock setups; each test should demonstrate a single mo...

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: .github/copilot-instructions.md:0-0
Timestamp: 2025-06-25T12:42:47.111Z
Learning: Avoid unnecessary complexity in test types and mock setups; each test should demonstrate a single Moq feature or analyzer rule.

Applied to files:

• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

📚 Learning: if your pr changes or adds analyzer tests, include a note in the pr description about which moq vers...

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: CONTRIBUTING.md:0-0
Timestamp: 2025-07-27T02:45:02.136Z
Learning: If your PR changes or adds analyzer tests, include a note in the PR description about which Moq versions are targeted and how test data is grouped accordingly.

Applied to files:

• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

📚 Learning: applies to tests/**/*.cs : use setupadd and setupremove only for virtual events, and only in moq 4.1...

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: CONTRIBUTING.md:0-0
Timestamp: 2025-07-27T02:45:02.136Z
Learning: Applies to tests/**/*.cs : Use SetupAdd and SetupRemove only for virtual events, and only in Moq 4.18.4+.

Applied to files:

• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

📚 Learning: applies to tests/**/*.cs : do not add analyzer tests for static, const, or readonly members, as moq ...

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: CONTRIBUTING.md:0-0
Timestamp: 2025-07-27T02:45:02.136Z
Learning: Applies to tests/**/*.cs : Do not add analyzer tests for static, const, or readonly members, as Moq cannot mock or set up these members.

Applied to files:

• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

📚 Learning: setups for explicit interface implementations must use the correct cast syntax (e.g., ((imyinterface...

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: .github/copilot-instructions.md:0-0
Timestamp: 2025-06-25T12:42:47.111Z
Learning: Setups for explicit interface implementations must use the correct cast syntax (e.g., ((IMyInterface)x).Method()), and only test these scenarios if the Moq version supports them.

Applied to files:

• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

📚 Learning: applies to {src/analyzers/**/*.cs,tests/**/*.cs}: for moq protected member setups using string-based...

Learnt from: rjmurillo
PR: rjmurillo/moq.analyzers#0
File: :0-0
Timestamp: 2025-07-22T17:25:24.857Z
Learning: Applies to {src/Analyzers/**/*.cs,tests/**/*.cs}: For Moq protected member setups using string-based overloads (e.g., `mock.Protected().Setup("MethodName", ...)`), use `ItExpr` matchers instead of `It` matchers. When using `As<T>()` interface mapping, regular `It` matchers are allowed in lambda expressions.

Applied to files:

• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

📚 Learning: string-based method name detection should be avoided in favor of the moqknownsymbols pattern for con...

Learnt from: rjmurillo
PR: rjmurillo/moq.analyzers#633
File: src/Common/ISymbolExtensions.cs:305-305
Timestamp: 2025-07-26T22:05:51.788Z
Learning: String-based method name detection should be avoided in favor of the MoqKnownSymbols pattern for consistency, type safety, and robustness in the Moq.Analyzers codebase. Methods like IsRaisesMethodByName that use string.Equals for method name checking go against established patterns.

Applied to files:

• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

📚 Learning: if mocking internal members, ensure [assembly: internalsvisibleto("dynamicproxygenassembly2")] is pr...

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: .github/copilot-instructions.md:0-0
Timestamp: 2025-06-25T12:42:47.111Z
Learning: If mocking internal members, ensure [assembly: InternalsVisibleTo("DynamicProxyGenAssembly2")] is present in the test assembly.

Applied to files:

• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

📚 Learning: applies to tests/**/*.cs : if mocking internal members, ensure [assembly: internalsvisibleto("dynami...

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: CONTRIBUTING.md:0-0
Timestamp: 2025-07-27T02:45:02.136Z
Learning: Applies to tests/**/*.cs : If mocking internal members, ensure [assembly: InternalsVisibleTo("DynamicProxyGenAssembly2")] is present in the test assembly.

Applied to files:

• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

📚 Learning: the callbacksignatureshouldmatchmockedmethodanalyzer (moq1100) currently has a gap where it does not...

Learnt from: rjmurillo
PR: rjmurillo/moq.analyzers#580
File: tests/Moq.Analyzers.Test/CallbackSignatureShouldMatchMockedMethodAnalyzerTests.cs:116-116
Timestamp: 2025-07-26T15:57:15.819Z
Learning: The CallbackSignatureShouldMatchMockedMethodAnalyzer (Moq1100) currently has a gap where it does not validate generic .Callback<T>() type parameters against the mocked method signature. This can lead to runtime errors when generic callback types don't match the expected method parameters, documented in CallbackSignatureShouldMatchMockedMethodAnalyzerTests.GenericCallbackValidation_CurrentLimitation_IsDocumented(). According to Moq documentation, .Callback<T> should provide compile-time type safety where T must match the argument type of the mocked method.

Applied to files:

• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

📚 Learning: group test data by moq version compatibility: 'new' for moq 4.18.4+, 'both' or 'old' for features av...

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: .github/copilot-instructions.md:0-0
Timestamp: 2025-06-25T12:42:47.110Z
Learning: Group test data by Moq version compatibility: 'new' for Moq 4.18.4+, 'both' or 'old' for features available in both 4.8.2 and 4.18.4.

Applied to files:

• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

📚 Learning: for every supported moq feature, write tests that cover both valid and invalid usage; use assert.thr...

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: .github/copilot-instructions.md:0-0
Timestamp: 2025-06-25T12:42:47.111Z
Learning: For every supported Moq feature, write tests that cover both valid and invalid usage; use Assert.Throws in tests to verify that invalid setups fail as expected.

Applied to files:

• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

📚 Learning: always group and annotate tests by moq version compatibility; do not include tests for features/apis...

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: .github/copilot-instructions.md:0-0
Timestamp: 2025-06-25T12:42:47.111Z
Learning: Always group and annotate tests by Moq version compatibility; do not include tests for features/APIs that do not exist in the targeted Moq version.

Applied to files:

• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

📚 Learning: applies to tests/**/*.cs : group analyzer tests by moq version compatibility: place tests for featur...

Learnt from: CR
PR: rjmurillo/moq.analyzers#0
File: CONTRIBUTING.md:0-0
Timestamp: 2025-07-27T02:45:02.136Z
Learning: Applies to tests/**/*.cs : Group analyzer tests by Moq version compatibility: place tests for features only available in Moq 4.18.4+ in a 'new' group, and tests for features available in both 4.8.2 and 4.18.4 in a 'both' or 'old' group.

Applied to files:

• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

📚 Learning: applies to {src/analyzers/**/*.cs,tests/**/*.cs}: moq protected member apis that need analyzer valid...

Learnt from: rjmurillo
PR: rjmurillo/moq.analyzers#0
File: :0-0
Timestamp: 2025-07-22T17:25:24.857Z
Learning: Applies to {src/Analyzers/**/*.cs,tests/**/*.cs}: Moq protected member APIs that need analyzer validation include: Setup, SetupSequence, SetupGet<T>, SetupSet<T>, Verify, VerifyGet<T>, VerifySet<T>, and As<T>() for interface mapping. All protected members must be virtual or abstract to be mockable.

Applied to files:

• tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs

⏰ Context from checks skipped due to timeout of 900000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (1)

• GitHub Check: Codacy Static Code Analysis

🔇 Additional comments (4)

src/CodeFixes/SyntaxGeneratorExtensions.cs (2)

32-39: LGTM! Correctly generalizes object creation handling.

The change from ObjectCreationExpressionSyntax to BaseObjectCreationExpressionSyntax properly supports both traditional new Type() and target-typed new() expressions. This fixes the exception that would occur when the codefix encountered target-typed new expressions. The exception message is also correctly updated.

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62-69: LGTM! Consistent with InsertArguments method changes.

The same beneficial generalization is applied here, ensuring both InsertArguments and ReplaceArgument methods handle target-typed new expressions consistently. The exception message accurately reflects the supported types.

tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs (2)

36-54: Excellent test coverage for target-typed new expressions.

The new test data comprehensively covers target-typed new() expressions for Mock instantiation, testing all relevant MockBehavior scenarios. The test cases properly use diagnostic markers and follow the established patterns. This validates that the SyntaxGeneratorExtensions.cs changes correctly handle target-typed new expressions in the codefix.

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112-112: LGTM! Properly includes new test data.

The return statement correctly includes the new mockConstructorsWithTargetTypedNew test data in the Union chain, ensuring the target-typed new expression scenarios are executed alongside existing tests.

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[Copilot]

Pull Request Overview

This PR fixes an exception in the code fix for explicit mock behavior by updating the code to handle target-typed new() expressions. The fix changes the type checking from ObjectCreationExpressionSyntax to the more general BaseObjectCreationExpressionSyntax to support both traditional object creation (new Mock<ISample>()) and target-typed new expressions (Mock<ISample> mock = new()).

Key changes:

• Updated SyntaxGeneratorExtensions to use BaseObjectCreationExpressionSyntax instead of ObjectCreationExpressionSyntax
• Added comprehensive test coverage for target-typed new expressions with various MockBehavior scenarios

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/CodeFixes/SyntaxGeneratorExtensions.cs	Updated type checking to use BaseObjectCreationExpressionSyntax for broader compatibility with C# syntax patterns
tests/Moq.Analyzers.Test/SetExplicitMockBehaviorCodeFixTests.cs	Added test cases for target-typed new expressions and integrated them into the test data

[rjmurillo]

@Youssef1313 Thank you for the contribution. I'll review and merge to main for the upcoming 0.4.0 release and back port to 0.3.0 branch

[coderabbitai]

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