public void Test_S1IntervalTestBase_GetLength()
{
Assert.Equal(quad12.GetLength(), Math.PI);
Assert.Equal(0, pi.GetLength());
Assert.Equal(0, mipi.GetLength());
Assert2.DoubleEqual(quad123.GetLength(), 1.5 * Math.PI);
Assert.Equal(Math.Abs(quad23.GetLength()), Math.PI);
Assert.Equal(full.GetLength(), S2.M_2_PI);
Assert.True(empty.GetLength() < 0);
}