xUnit2022 v2 v3 Info

Boolean assertions should not be negated

Cause

This rule is triggered when you call a boolean assertion with a negated expression.

The message that results from a negated expression is often less clear than the one that would result from a positive expression.

To fix a violation of this rule, remove the negation and invert the assertion.

using Xunit;

public class TestClass
{
    [Fact]
    public void TestMethod()
    {
        Assert.True(!condition);
    }
}

using Xunit;

public class TestClass
{
    [Fact]
    public void TestMethod()
    {
        Assert.False(condition);
    }
}