Unit tests check that small parts of your code work correctly automatically.
🧪 Why Test?
- Catch bugs early
- Refactor safely
- Prove your code works
🏗️ Create a Test Project
- In terminal, run:
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dotnet new xunit -n MyTests cd MyTests
- Add your code project as a reference:
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dotnet add reference ../MyApp/MyApp.csproj
📝 Writing a Test
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public class MathTests
{
[Fact]
public void Add_Works()
{
int result = Add(2, 3);
Assert.Equal(5, result);
}
}
[Fact]: Marks a test methodAssert.Equal: Checks for expected result
🏃♂️ Run Tests
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dotnet test
💡 Try It!
Write a function Square(int n) and a test that checks Square(4) returns 16.
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[Fact]
public void Square_Works()
{
Assert.Equal(16, Square(4));
}
Next: Testing with xUnit and NUnit!
