# Unit Testing & xUnit (.NET)

> Framework xUnit, test case, assertions, Moq, FluentAssertions, code coverage, prinsip TDD

- 20 pertanyaan wawancara
- Mid-Level
- [Pertanyaan Wawancara: .NET](https://sharpskill.dev/id/technologies/dotnet/pertanyaan-wawancara.md)

## 1. Apa itu xUnit dalam konteks .NET?

**Jawaban**

xUnit adalah framework unit testing open-source untuk .NET, terinspirasi oleh JUnit dan NUnit. Framework ini menggunakan atribut seperti [Fact] untuk test sederhana dan [Theory] untuk test berparameter. xUnit mendorong praktik terbaik seperti isolasi test (setiap test membuat instance kelas test baru) dan menghindari shared state melalui metode Setup/Teardown tradisional.

## 2. Apa perbedaan antara [Fact] dan [Theory] di xUnit?

**Jawaban**

[Fact] mendekorasi test sederhana yang dijalankan sekali tanpa parameter, sedangkan [Theory] mendekorasi test berparameter yang dijalankan beberapa kali dengan nilai berbeda yang disediakan melalui [InlineData], [MemberData], atau [ClassData]. Menggunakan [Theory] menghindari duplikasi kode saat menguji beberapa skenario serupa dengan data berbeda.

## 3. Bagaimana cara menggunakan [InlineData] dengan [Theory] di xUnit?

**Jawaban**

[InlineData] menyediakan data langsung di dalam atribut untuk test [Theory], memungkinkan test yang sama dijalankan dengan nilai berbeda. Setiap atribut [InlineData] mewakili test case yang berbeda. Pendekatan ini ideal untuk menguji beberapa skenario sederhana tanpa membuat kelas data terpisah, sehingga mengurangi kode boilerplate.

## 17 pertanyaan lagi tersedia

- Apa keunggulan utama Moq dalam unit testing .NET?
- Bagaimana cara mengonfigurasi mock dengan Moq agar sebuah metode mengembalikan nilai tertentu?

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