public void Test_S1ChordAngle_Predecessor()
{
Assert.Equal(S1ChordAngle.Straight, S1ChordAngle.Infinity.Predecessor());
Assert.Equal(S1ChordAngle.Negative, S1ChordAngle.Zero.Predecessor());
Assert.Equal(S1ChordAngle.Negative, S1ChordAngle.Negative.Predecessor());
S1ChordAngle x = S1ChordAngle.Infinity;
for (int i = 0; i < 10; ++i)
{
Assert.True(x > x.Predecessor());
x = x.Predecessor();
}
}