How can I check if an object inherits from another class using FluentAssertions?

Question

I would like to know how can I check if an object inherits from another class using Fluent Assertions?

I know I can do that with xUnit using IsAssignableFrom, like so:

[Fact]
public void CreateBossEnemy()
{
    //arrange
    EnemyFactory sut = new EnemyFactory();

    //action
    var enemy = sut.Create("Zombie King", true);

    //assert
    Assert.IsAssignableFrom<Enemy>(enemy);
}

What would be the equivalent of IsAssignableFrom for Fluent Assertions?

Answer 1

To check whether enemy is assignable to the the type Enemy you can use:

enemy.Should().BeAssignableTo<Enemy>();

Some resources:

• documentation
• source code
• tests