public void ExamplesForValuesBetweenOriginAndMax(int origin, int min, int max, int value, decimal expectedDistance)
{
var func = MeasureFunc.DistanceFromOrigin(origin, min, max);
var distance = func(value);
distance.Should().BeApproximately(expectedDistance, 1);
}
public IGen <Test> IfOriginIsGreaterThanMax_ItThrows() =>
from min in Gen.Int32().LessThan(int.MaxValue)
from max in Gen.Int32().GreaterThanEqual(min).LessThan(int.MaxValue)
from origin in Gen.Int32().GreaterThan(max)
select Property.ForThese(() =>
{
Action action = () => MeasureFunc.DistanceFromOrigin(origin, min, max);
action.Should()
.Throw <ArgumentOutOfRangeException>()
.And.ParamName.Should().Be("origin");
});
public IGen <Test> IfValueEqualsOrigin_ItReturnsZero() =>
from min in Gen.Int32()
from max in Gen.Int32().GreaterThanEqual(min)
from origin in Gen.Int32().Between(min, max)
let value = origin
select Property.ForThese(() =>
{
var func = MeasureFunc.DistanceFromOrigin(origin, min, max);
var distance = func(value);
distance.Should().Be(0);
});
public IGen <Test> IfValueEqualsMax_AndOriginDiffers_ItReturns100() =>
from min in Gen.Int32()
from max in Gen.Int32().GreaterThanEqual(min)
from origin in Gen.Int32().Between(min, max)
where origin != max
let value = max
select Property.ForThese(() =>
{
var func = MeasureFunc.DistanceFromOrigin(origin, min, max);
var distance = func(value);
distance.Should().Be(100);
});
public IGen <Test> IfValueIsLessThanMin_ItThrows() =>
from min in Gen.Int32().GreaterThan(int.MinValue)
from max in Gen.Int32().GreaterThanEqual(min)
from origin in Gen.Int32().Between(min, max)
from value in Gen.Int32().LessThan(min)
select Property.ForThese(() =>
{
var func = MeasureFunc.DistanceFromOrigin(origin, min, max);
Action action = () => func(value);
action.Should()
.Throw <ArgumentOutOfRangeException>()
.And.ParamName.Should().Be("value");
});