public void ReturnFalseOnNullLeft()
{
Range <int> left = null;
var right = Range <int> .All();
Assert.False(Range <int> .Equals(left, right));
}
public static void CreationTest()
{
Range range = Range.Create(new Index(10, fromEnd: false), new Index(2, fromEnd: true));
Assert.Equal(10, range.Start.Value);
Assert.False(range.Start.FromEnd);
Assert.Equal(2, range.End.Value);
Assert.True(range.End.FromEnd);
range = Range.FromStart(new Index(7, fromEnd: false));
Assert.Equal(7, range.Start.Value);
Assert.False(range.Start.FromEnd);
Assert.Equal(0, range.End.Value);
Assert.True(range.End.FromEnd);
range = Range.ToEnd(new Index(3, fromEnd: true));
Assert.Equal(0, range.Start.Value);
Assert.False(range.Start.FromEnd);
Assert.Equal(3, range.End.Value);
Assert.True(range.End.FromEnd);
range = Range.All();
Assert.Equal(0, range.Start.Value);
Assert.False(range.Start.FromEnd);
Assert.Equal(0, range.End.Value);
Assert.True(range.End.FromEnd);
}
public void ToStringHandlesAllRange()
{
var range = Range <int> .All();
var expected = "(-∞..+∞)";
var actual = range.ToString();
Assert.Equal(expected, actual);
}
public void InfiniteRangesEqual()
{
var a = Range <int> .All();
var b = Range <int> .All();
Assert.True(a.Equals(b));
Assert.True(b.Equals(a));
}
public void ReturnUnboundedForLowerInfiniteBound()
{
var range = Range <int> .All();
Assert.Equal(BoundType.UNBOUNDED, range.LowerBoundType);
}
public void HasUpperBoundReturnsFalse()
{
var infinite = Range <int> .All();
Assert.False(infinite.HasUpperEndpoint);
}
public void ThrowsWhenAccessingUpperBound()
{
var infinite = Range <int> .All();
Assert.Throws <InvalidOperationException>(() => infinite.UpperEndpoint);
}