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Writes fluent, readable test assertions and validations using FluentAssertions library. Use when: Writing unit tests, validating service responses, asserting domain entity states, testing collections and async operations.
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SOC 職業分類に基づく
Builds REST APIs, SignalR hubs, and ASP.NET Core Web API applications. Use when: Creating controllers, configuring middleware, setting up dependency injection, implementing background services, or working with the API layer.
Develops Blazor WebAssembly single-page applications with component-based UI. Use when: Creating/modifying .razor components, managing component state, handling SignalR subscriptions, or working with MudBlazor UI components.
Writes C# code following VanDaemon conventions and clean architecture patterns Use when: Creating services, entities, controllers, or plugins in the VanDaemon codebase
Configures containerization with Docker and Docker Compose for VanDaemon. Use when: building containers, configuring docker-compose, deploying to Docker environments, troubleshooting container networking, or setting up multi-container applications.
Configures .NET 10 projects, builds, and manages C# runtime. Use when: building/running the solution, adding projects, managing NuGet packages, configuring Docker containers, or troubleshooting build issues.
Applies UI design with Material Design components and SVG diagrams for the VanDaemon Blazor WebAssembly frontend. Use when: Creating new pages, styling components, designing dashboard overlays, implementing touch-friendly interfaces, or working with van diagram SVGs.
| name | fluent-assertions |
| description | Writes fluent, readable test assertions and validations using FluentAssertions library. Use when: Writing unit tests, validating service responses, asserting domain entity states, testing collections and async operations. |
| allowed-tools | Read, Edit, Write, Glob, Grep, Bash |
FluentAssertions provides a fluent API for expressing test assertions in C#. In VanDaemon, it's used alongside xUnit and Moq for testing services, controllers, plugins, and the JsonFileStore persistence layer. The library produces clear failure messages that explain exactly what went wrong.
// From VanDaemon test patterns
result.Should().NotBeNull();
result.Should().Be(expectedValue);
tank.CurrentLevel.Should().BeInRange(0, 100);
tank.IsActive.Should().BeTrue();
// Testing tank service returns
var tanks = await tankService.GetAllTanksAsync();
tanks.Should().NotBeNull();
tanks.Should().HaveCount(3);
tanks.Should().AllSatisfy(t => t.IsActive.Should().BeTrue());
tanks.Should().Contain(t => t.Type == TankType.FreshWater);
// Testing async service methods
await service.Invoking(s => s.GetTankByIdAsync(Guid.Empty))
.Should().ThrowAsync<ArgumentException>();
var result = await service.GetAllControlsAsync();
result.Should().BeEquivalentTo(expectedControls);
| Concept | Usage | Example |
|---|---|---|
Should() | Entry point for all assertions | value.Should().Be(5) |
BeEquivalentTo() | Deep object comparison | actual.Should().BeEquivalentTo(expected) |
AllSatisfy() | Assert condition on all items | list.Should().AllSatisfy(x => x.IsActive.Should().BeTrue()) |
Invoking() | Test exception throwing | obj.Invoking(x => x.Method()).Should().Throw<T>() |
Because() | Custom failure message | value.Should().Be(5, "configuration requires this") |
When: Testing application services like TankService, ControlService
var mockFileStore = new Mock<IJsonFileStore>();
mockFileStore.Setup(x => x.LoadAsync<List<Tank>>("tanks.json", It.IsAny<CancellationToken>()))
.ReturnsAsync(testTanks);
var service = new TankService(logger, mockFileStore.Object);
var result = await service.GetAllTanksAsync();
result.Should().NotBeNull();
result.Should().HaveCount(2);
result.First().Name.Should().Be("Fresh Water");
When: Validating domain entity properties
var tank = new Tank { Type = TankType.FreshWater, AlertLevel = 10 };
tank.Type.Should().Be(TankType.FreshWater);
tank.AlertLevel.Should().BeGreaterThanOrEqualTo(0);
tank.AlertWhenOver.Should().BeFalse("fresh water alerts when level drops below threshold");