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.NET testing fundamentals overview and navigation center. Triggered when users ask about "how to write .NET tests", ".NET testing getting started", "required testing tools", "testing best practices", "learn testing from scratch", and other general testing needs. Recommends appropriate sub-skills based on specific requirements, covering testing fundamentals, test data, assertions, mocking, special scenarios, and other 19 fundamental skills. Keywords: dotnet testing, .NET testing, testing getting started, how to write tests, testing best practices, unit test, unit test, xunit, 3A pattern, FIRST principle, assertion, assertion, mock, stub, NSubstitute, test data, AutoFixture, Bogus, validator, FluentValidation, TimeProvider, IFileSystem, code coverage, ITestOutputHelper, test naming

日本語の概要は準備中です。原文の説明を表示しています。

Tests Uno Platform apps. Playwright for WASM, platform-specific patterns, runtime heads.

日本語の概要は準備中です。原文の説明を表示しています。

Specialized skill for testing file system operations using System.IO.Abstractions. Use when you need to test File, Directory, Path operations, or simulate file system. Covers IFileSystem, MockFileSystem, file read/write testing, directory operation testing, etc. Keywords: file testing, filesystem, file testing, file system testing, IFileSystem, MockFileSystem, System.IO.Abstractions, File.ReadAllText, File.WriteAllText, Directory.CreateDirectory, Path.Combine, mock file system, file abstraction

日本語の概要は準備中です。原文の説明を表示しています。

xUnit test project creation and setup specialized skill. Used when creating test projects, setting up project structure, configuring NuGet packages, and organizing test folders. Covers csproj setup, package management, project structure, xunit.runner.json configuration, etc. Keywords: xunit project, xunit setup, create test project, test project setup, create test project, project structure, project structure, folder structure, xunit package, nuget packages, testing packages, how to create test project, xunit configuration

日本語の概要は準備中です。原文の説明を表示しています。

Trims .NET 8+ apps and libraries. Annotations, ILLink descriptors, IL2xxx warnings, IsTrimmable.

日本語の概要は準備中です。原文の説明を表示しています。

Builds Uno Platform cross-platform apps. Extensions, MVUX, Toolkit controls, Hot Reload.

日本語の概要は準備中です。原文の説明を表示しています。

Writes XML doc comments. Tags, inheritdoc, GenerateDocumentationFile, warning suppression.

日本語の概要は準備中です。原文の説明を表示しています。

Specialized skill for testing time-dependent logic using TimeProvider. Use when testing DateTime, controlling time flow, handling timezone conversions, and testing expiration logic. Covers TimeProvider abstraction, FakeTimeProvider time control, time freezing and fast-forwarding. Keywords: datetime, time testing, TimeProvider, FakeTimeProvider, DateTime.Now, time-dependent, cache expiration, token expiration, Microsoft.Bcl.TimeProvider, GetUtcNow, SetUtcNow, Advance, time freeze, time freezing, time fast-forward

日本語の概要は準備中です。原文の説明を表示しています。

Decides how to test .NET code. Unit vs integration vs E2E decision tree, test doubles.

日本語の概要は準備中です。原文の説明を表示しています。

.NET unit test fundamentals and FIRST principles specialized skill. Used when creating unit tests, understanding testing basics, learning 3A Pattern, and mastering testing best practices. Covers FIRST principles, AAA Pattern, Fact/Theory, testing pyramid, etc. Keywords: unit test, unit test, unit testing, test fundamentals, testing fundamentals, FIRST principle, FIRST principle, 3A pattern, AAA pattern, Arrange Act Assert, Fact, Theory, InlineData, how to write tests, testing best practices, create unit test

日本語の概要は準備中です。原文の説明を表示しています。

Installs and manages .NET tools. Global, local, manifests, restore, version pinning.

日本語の概要は準備中です。原文の説明を表示しています。

Detects TFM/SDK from .csproj, global.json, Directory.Build.props. Runs first.

日本語の概要は準備中です。原文の説明を表示しています。

Tests UI across frameworks. Page objects, test selectors, async waits, accessibility.

日本語の概要は準備中です。原文の説明を表示しています。

Queries Uno MCP server. Tool detection, search-then-fetch workflow, init rules, fallback.

日本語の概要は準備中です。原文の説明を表示しています。

Complete guide for xUnit test output and logging. Use when you need to implement test output, diagnostic logging, or ILogger alternatives in xUnit tests. Covers ITestOutputHelper injection, AbstractLogger pattern, structured output design. Includes XUnitLogger, CompositeLogger, performance test diagnostic tool implementations. Keywords: ITestOutputHelper, ILogger testing, test output xunit, test output, test logging, AbstractLogger, XUnitLogger, CompositeLogger, testOutputHelper.WriteLine, test diagnostics, logger mock, test log, structured output, Received().Log

日本語の概要は準備中です。原文の説明を表示しています。

Builds WPF on .NET 8+. Host builder, MVVM Toolkit, Fluent theme, performance, modern C# patterns.

日本語の概要は準備中です。原文の説明を表示しています。

This skill provides symbol-level code understanding and navigation using Language Server Protocol (LSP). Enables IDE-like capabilities for finding symbols, tracking references, and making precise code edits at the symbol level.

日本語の概要は準備中です。原文の説明を表示しています。

Upgrades .NET to a newer TFM. LTS-to-LTS, staged through STS, preview, upgrade paths.

日本語の概要は準備中です。原文の説明を表示しています。

Guide for Private and Internal member testing strategies. Use when you need to test private or internal members, configure InternalsVisibleTo, or evaluate testability design. Covers design-first thinking, reflection testing, strategy pattern refactoring, AbstractLogger pattern, and decision frameworks. Keywords: private method testing, internal testing, InternalsVisibleTo, reflection testing, GetMethod BindingFlags, Meziantou.MSBuild.InternalsVisibleTo, testability design, strategy pattern refactoring, testability

日本語の概要は準備中です。原文の説明を表示しています。

Specialized skill for testing FluentValidation validators. Use when you need to create tests for Validator classes, validate business rules, or test error messages. Covers complete FluentValidation.TestHelper usage, ShouldHaveValidationErrorFor, async validation, cross-field logic, etc. Keywords: validator, validation, fluentvalidation, validation testing, UserValidator, CreateOrderValidator, TestHelper, ShouldHaveValidationErrorFor, ShouldNotHaveValidationErrorFor, TestValidate, TestValidateAsync, testing validators, validating business rules

日本語の概要は準備中です。原文の説明を表示しています。

Test Data Builder Pattern complete implementation guide. Used when using builder pattern to create maintainable test data or simplify complex object test preparation. Covers fluent interface, semantic methods, default value design, and Builder composition patterns. Keywords: test data builder, builder pattern test, test data builder, object mother, fluent interface, fluent interface, UserBuilder, ProductBuilder, .With(), .Build(), AUser(), test data preparation, complex object creation, semantic testing

日本語の概要は準備中です。原文の説明を表示しています。

Test naming conventions and best practices specialized skill. Used when naming test methods, improving test readability, and establishing naming standards. Covers three-part naming method, Chinese naming recommendations, test class naming, etc. Keywords: test naming, test naming, naming conventions, naming conventions, three-part naming, three-part naming, method_scenario_expected, method_scenario_expected, how to name tests, test readability, naming best practices, test report, test documentation

日本語の概要は準備中です。原文の説明を表示しています。

Using NSubstitute to create test doubles (Mock, Stub, Spy) specialized skill. Used when isolating external dependencies, simulating interface behavior, and validating method calls. Covers Substitute.For, Returns, Received, Throws and complete guidance. Keywords: mock, stub, spy, nsubstitute, mock, test double, test double, IRepository, IService, Substitute.For, Returns, Received, Throws, Arg.Any, Arg.Is, isolate dependencies, simulate external services, dependency injection testing

日本語の概要は準備中です。原文の説明を表示しています。

Validates models and IOptions. DataAnnotations, IValidatableObject, IValidateOptions<T>.

日本語の概要は準備中です。原文の説明を表示しています。