public void WhenImageIsNotExpectedWidth_ThenAssertFalse(string filePath)
{
Assert.Throws <AssertionException>(() => AssertImage.WidthEquals(filePath, 201));
}
public void WhenImageIsNull_ThenThrowException()
{
Assert.Throws <ArgumentNullException>(() => AssertImage.WidthEquals(null as Image, 200));
}
public void WhenImageIsExpectedWidth_ThenAssertTrue(string filePath)
{
Assert.DoesNotThrow(() => AssertImage.WidthEquals(filePath, 200));
}