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()
{
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));
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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