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DependencyServiceTests.cs
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DependencyServiceTests.cs
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using NUnit.Framework;
using Xamarin.Forms;
using Xamarin.Forms.Core.UnitTests;
[assembly: Dependency(typeof (DependencyTestImpl))]
namespace Xamarin.Forms.Core.UnitTests
{
public interface IDependencyTest
{
bool Works { get; }
}
public interface IDependencyTestRegister
{
bool Works { get; }
}
public interface IUnsatisfied
{
bool Broken { get; }
}
public class DependencyTestImpl : IDependencyTest
{
public bool Works { get { return true; } }
}
public class DependencyTestRegisterImpl : IDependencyTestRegister
{
public bool Works { get { return true; } }
}
public class DependencyTestRegisterImpl2 : IDependencyTestRegister
{
public bool Works { get { return false; } }
}
public class DependencyServiceTests : BaseTestFixture
{
[SetUp]
public override void Setup()
{
base.Setup ();
Device.PlatformServices = new MockPlatformServices ();
}
[TearDown]
public override void TearDown()
{
base.TearDown ();
Device.PlatformServices = null;
}
[Test]
public void GetGlobalInstance ()
{
var global = DependencyService.Get<IDependencyTest> ();
Assert.NotNull (global);
var secondFetch = DependencyService.Get<IDependencyTest> ();
Assert.True (ReferenceEquals (global, secondFetch));
}
[Test]
public void NewInstanceIsNotGlobalInstance ()
{
var global = DependencyService.Get<IDependencyTest> ();
Assert.NotNull (global);
var secondFetch = DependencyService.Get<IDependencyTest> (DependencyFetchTarget.NewInstance);
Assert.False (ReferenceEquals (global, secondFetch));
}
[Test]
public void NewInstanceIsAlwaysNew ()
{
var firstFetch = DependencyService.Get<IDependencyTest> (DependencyFetchTarget.NewInstance);
Assert.NotNull (firstFetch);
var secondFetch = DependencyService.Get<IDependencyTest> (DependencyFetchTarget.NewInstance);
Assert.False (ReferenceEquals (firstFetch, secondFetch));
}
[Test]
public void UnsatisfiedReturnsNull ()
{
Assert.Null (DependencyService.Get<IUnsatisfied> ());
}
[Test]
public void RegisterTypeImplementation ()
{
DependencyService.Register<DependencyTestRegisterImpl> ();
var global = DependencyService.Get<DependencyTestRegisterImpl> ();
Assert.NotNull (global);
}
[Test]
public void RegisterInterfaceAndImplementations ()
{
DependencyService.Register<IDependencyTestRegister, DependencyTestRegisterImpl2> ();
var global = DependencyService.Get<IDependencyTestRegister> ();
Assert.IsInstanceOf<DependencyTestRegisterImpl2> (global);
}
[Test]
public void RegisterInterfaceAndOverrideImplementations ()
{
DependencyService.Register<IDependencyTestRegister, DependencyTestRegisterImpl> ();
DependencyService.Register<IDependencyTestRegister, DependencyTestRegisterImpl2> ();
var global = DependencyService.Get<IDependencyTestRegister> ();
Assert.IsInstanceOf<DependencyTestRegisterImpl2> (global);
}
[Test]
public void RegisterSingletonInterface ()
{
var local = new DependencyTestRegisterImpl();
DependencyService.RegisterSingleton<IDependencyTestRegister> (local);
var global = DependencyService.Get<IDependencyTestRegister> ();
Assert.AreEqual(local, global);
}
}
}