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using System;
using NUnit.Framework;
using Xamarin.Forms.Maps;
namespace Xamarin.Forms.Core.UnitTests
{
[TestFixture]
public class DistanceTests : BaseTestFixture
{
[Test]
public void Constructor ()
{
var distance = new Distance (25);
Assert.AreEqual (25, distance.Meters);
}
[Test]
public void ConstructFromKilometers()
{
const double EPSILON = 0.001;
Distance distance = Distance.FromKilometers(2);
Assert.True(Math.Abs(distance.Kilometers - 2) < EPSILON);
Assert.True(Math.Abs(distance.Meters - 2000) < EPSILON);
Assert.True(Math.Abs(distance.Miles - 1.24274) < EPSILON);
}
[Test]
public void ConstructFromMeters()
{
const double EPSILON = 0.001;
Distance distance = Distance.FromMeters(10560);
Assert.True(Math.Abs(distance.Meters - 10560) < EPSILON);
Assert.True(Math.Abs(distance.Miles - 6.5616798) < EPSILON);
Assert.True(Math.Abs(distance.Kilometers - 10.56) < EPSILON);
}
[Test]
public void ConstructFromMiles()
{
const double EPSILON = 0.001;
// Reached the limit of double precision using the number
// of miles of the earth's circumference
const double EPSILON_FOR_LARGE_MILES_TO_METERS = 16;
// Reached the limit of double precision
const double EPSILON_FOR_LARGE_MILES_TO_KM = 0.1;
Distance distance = Distance.FromMiles(3963.1676);
Assert.True(Math.Abs(distance.Miles - 3963.1676) < EPSILON);
Assert.True(Math.Abs(distance.Meters - 6378099.99805) < EPSILON_FOR_LARGE_MILES_TO_METERS);
Assert.True(Math.Abs(distance.Kilometers - 6378.09999805) < EPSILON_FOR_LARGE_MILES_TO_KM);
}
[Test]
public void EqualityOp([Range(5, 9)] double x, [Range(5, 9)] double y)
{
bool result = Distance.FromMeters(x) == Distance.FromMeters(y);
if (x == y)
Assert.True(result);
else
Assert.False(result);
}
[Test]
public void Equals([Range(3, 7)] double x, [Range(3, 7)] double y)
{
bool result = Distance.FromMiles(x).Equals(Distance.FromMiles(y));
if (x == y)
Assert.True(result);
else
Assert.False(result);
}
[Test]
public void EqualsNull()
{
Assert.False(Distance.FromMeters(5).Equals(null));
}
[Test]
public void GettingAndSettingKilometers()
{
const double EPSILON = 0.001;
Distance distance = Distance.FromKilometers(1891);
Assert.True(Math.Abs(distance.Kilometers - 1891) < EPSILON);
}
[Test]
public void GettingAndSettingMeters()
{
const double EPSILON = 0.001;
Distance distance = Distance.FromMeters(123434);
Assert.True(Math.Abs(distance.Meters - 123434) < EPSILON);
}
[Test]
public void GettingAndSettingMiles()
{
const double EPSILON = 0.001;
Distance distance = Distance.FromMiles(515);
Assert.True(Math.Abs(distance.Miles - 515) < EPSILON);
}
[Test]
public void HashCode([Range(4, 5)] double x, [Range(4, 5)] double y)
{
Distance distance1 = Distance.FromMiles(x);
Distance distance2 = Distance.FromMiles(y);
bool result = distance1.GetHashCode() == distance2.GetHashCode();
if (x == y)
Assert.True(result);
else
Assert.False(result);
}
[Test]
public void InequalityOp([Range(5, 9)] double x, [Range(5, 9)] double y)
{
bool result = Distance.FromMeters(x) != Distance.FromMeters(y);
if (x != y)
Assert.True(result);
else
Assert.False(result);
}
[Test]
public void ObjectInitializerKilometers()
{
const double EPSILON = 0.001;
Distance distance = Distance.FromKilometers(10);
Assert.True(Math.Abs(distance.Meters - 10000) < EPSILON);
}
[Test]
public void ObjectInitializerMeters()
{
const double EPSILON = 0.001;
Distance distance = Distance.FromMeters(1057);
Assert.True(Math.Abs(distance.Kilometers - 1.057) < EPSILON);
}
[Test]
public void ObjectInitializerMiles()
{
const double EPSILON = 0.001;
Distance distance = Distance.FromMiles(100);
Assert.True(Math.Abs(distance.Meters - 160934.4) < EPSILON);
}
[Test]
public void ClampFromMeters ()
{
var distance = Distance.FromMeters (-1);
Assert.AreEqual (0, distance.Meters);
}
[Test]
public void ClampFromMiles ()
{
var distance = Distance.FromMiles (-1);
Assert.AreEqual (0, distance.Meters);
}
[Test]
public void ClampFromKilometers ()
{
var distance = Distance.FromKilometers (-1);
Assert.AreEqual (0, distance.Meters);
}
[Test]
public void Equals ()
{
Assert.True (Distance.FromMiles (2).Equals ((object) Distance.FromMiles (2)));
}
}
}
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