Fake & Unit Testing

September 2, 2020 10:35

Fake & Unit Testing (edit)

There are three Unit Test project types for .NET Core.

MSTest Test Project (.NET Core)
xUnit Test Project (.NET Core)
NUnit Test Project (.NET Core)

This article focus on:

Visual Studio 2019 Enterprise
- Test Explorer
- Live Unit Testing
ASP.NET Core 3.1
EF Core 3.1
xUnit
- [Fact]
- [Theory]
- [InlineData]
- [ClassData]
- [MemberData]
- [DataAttribute]
- IEnumerable<object[]>
Moq
Faker.js
Integration tests
Selenium WebDriver

https://github.com/Ermesx/testing-context

https://github.com/bchavez/Bogus

Code template

https://wakeupandcode.com/unit-testing-in-asp-net-core/

public class Calculator
{
    public int Add(int value1, int value2)
    {
        return value1 + value2;
    }
}

public class CalculatorTests
{
    [Fact]
    public void CanAdd()
    {
        var calculator = new Calculator();

        int value1 = 1;
        int value2 = 2;

        var result = calculator.Add(value1, value2);

        Assert.Equal(3, result);
    }
}

[Theory]
[InlineData(1, 2, 3)]
[InlineData(-4, -6, -10)]
[InlineData(-2, 2, 0)]
[InlineData(int.MinValue, -1, int.MaxValue)]
public void CanAddTheory(int value1, int value2, int expected)
{
    var calculator = new Calculator();

    var result = calculator.Add(value1, value2);

    Assert.Equal(expected, result);
}

public void TestAddNumbers(int x, int y, int expectedResult)
{
   // 1. Arrange
   var cs = new CalcService();

   // 2. Act 
   var result = cs.AddNumbers(x, y);

   // 3. Assert 
   Assert.Equal(expectedResult, result);
}