ColorEqualityComparer

Use this class to compare two Color objects. ColorEqualityComparer.Instance has default calculation error value set to 0.01f. To set a test specific error value instantiate a comparer instance using the one argument constructor.

Static properties

Syntax	Description
Instance	A singleton instance of the comparer with a default error value set to 0.01f.

Constructors

Syntax	Description
ColorEqualityComparer(float error)	Creates an instance of the comparer with a custom error value.

Public methods

Syntax	Description
bool Equals(Color expected, Color actual);	Compares the actual and expected Color objects for equality using Utils.AreFloatsEqualAbsoluteError to compare the RGB and Alpha attributes of Color. Returns true if expected and actual objects are equal otherwise, it returns false.

Example

[TestFixture]
public class ColorEqualityTest
{
    [Test]
    public void GivenColorsAreEqual_WithAllowedCalculationError()
    {
        // Using default error
        var firstColor = new Color(0f, 0f, 0f, 0f);
        var secondColor = new Color(0f, 0f, 0f, 0f);

        Assert.That(firstColor, Is.EqualTo(secondColor).Using(ColorEqualityComparer.Instance));
		
        // Allowed error 10e-5f
        var comparer = new ColorEqualityComparer(10e-5f);
        firstColor = new Color(0f, 0f, 0f, 1f);
        secondColor = new Color(10e-6f, 0f, 0f, 1f);

        Assert.That(firstColor, Is.EqualTo(secondColor).Using(comparer));
    }
}
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