DefaultFloatingPointTolerance
The DefaultFloatingPointToleranceAttribute is used to indicate that
comparisons of values of types float and double - within the test method,
class, or assembly marked with the attribute - should use the tolerance
specified in the constructor unless a specific tolerance is given for the
comparison.
Examples
[TestFixture]
[DefaultFloatingPointTolerance(1)]
public class ToleranceTest
{
[Test]
public void ComparisonUsingDefaultFloatingPointToleranceFromFixture()
{
// Passes due to the DefaultFloatingPointToleranceAttribute from the fixture.
Assert.That(1f, Is.EqualTo(2));
}
[Test]
public void ComparisonOfIntegersDoNotUseTolerance()
{
// Fails as DefaultFloatingPointTolerance only effects comparisons
// of floats and doubles.
Assert.That(1, Is.EqualTo(2));
}
[Test]
public void ComparisonUsingSpecificTolerance()
{
// Fails as 1 is not equal to 2 using the specified tolerance 0.
Assert.That(1f, Is.EqualTo(2).Within(0));
}
[Test]
[DefaultFloatingPointTolerance(2)]
public void ComparisonUsingDefaultFloatingPointToleranceFromTest()
{
// Passes due to the DefaultFloatingPointTolerance from the test.
Assert.That(2f, Is.EqualTo(4));
}
}