public void GetEngineCreatesNewEngineIfNotAtMaximum()
{
var factory = new Mock <IEngineFactoryForMock>();
factory.Setup(x => x.EngineFactory()).Returns(() => new Mock <IJsEngine>().Object);
var config = new JsPoolConfig
{
StartEngines = 1,
MaxEngines = 2,
EngineFactory = factory.Object.EngineFactory
};
var pool = new JsPool(config);
factory.Verify(x => x.EngineFactory(), Times.Exactly(2));
pool.GetEngine(); // First engine created on init
factory.Verify(x => x.EngineFactory(), Times.Exactly(2));
Assert.AreEqual(1, pool.EngineCount);
Assert.AreEqual(0, pool.AvailableEngineCount);
pool.GetEngine(); // Second engine created JIT
factory.Verify(x => x.EngineFactory(), Times.Exactly(3));
Assert.AreEqual(2, pool.EngineCount);
Assert.AreEqual(0, pool.AvailableEngineCount);
}
/// <summary>
/// Creates a new JavaScript engine pool.
/// </summary>
protected virtual IJsPool CreatePool()
{
var allFiles = _config.Scripts
.Concat(_config.ScriptsWithoutTransform)
.Select(_fileSystem.MapPath);
var poolConfig = new JsPoolConfig
{
EngineFactory = _factory,
Initializer = InitialiseEngine,
WatchPath = _fileSystem.MapPath("~/"),
WatchFiles = allFiles
};
if (_config.MaxEngines != null)
{
poolConfig.MaxEngines = _config.MaxEngines.Value;
}
if (_config.StartEngines != null)
{
poolConfig.StartEngines = _config.StartEngines.Value;
}
if (_config.MaxUsagesPerEngine != null)
{
poolConfig.MaxUsagesPerEngine = _config.MaxUsagesPerEngine.Value;
}
var pool = new JsPool(poolConfig);
// Reset the recycle exception on recycle. If there *are* errors loading the scripts
// during recycle, the errors will be caught in the initializer.
pool.Recycled += (sender, args) => _scriptLoadException = null;
return(pool);
}
public JsEngineManager(IJsEngineManagerConfiguration config)
{
this._config = config;
if (config == null)
{
throw new ArgumentNullException(nameof(config));
}
this._modules = config.Modules ?? new List <string>();
// replace with custom object & mapping
this._poolConfig = new JsPoolConfig
{
EngineFactory = new ChakraCoreJsEngineFactory().CreateEngine,
Initializer = this.Initializer()
};
if (config.StartEngines.HasValue)
{
this._poolConfig.StartEngines = config.StartEngines.Value;
}
if (config.MaxEngines.HasValue)
{
this._poolConfig.MaxEngines = config.MaxEngines.Value;
}
if (config.MaxUsagesPerEngine.HasValue)
{
this._poolConfig.MaxUsagesPerEngine = config.MaxUsagesPerEngine.Value;
}
this._pool = new JsPool(this._poolConfig);
}
public void GetEngineReturnsAllAvailableEngines()
{
var engines = new[]
{
new Mock<IJsEngine>().Object,
new Mock<IJsEngine>().Object,
new Mock<IJsEngine>().Object,
};
var factory = new Mock<IEngineFactoryForMock>();
factory.SetupSequence(x => x.EngineFactory())
// Initial call to factory is to determine engine type, we don't care
// about that here.
.Returns(new Mock<IJsEngine>().Object)
.Returns(engines[0])
.Returns(engines[1])
.Returns(engines[2]);
var config = new JsPoolConfig
{
StartEngines = 3,
EngineFactory = factory.Object.EngineFactory
};
var pool = new JsPool(config);
var resultEngines = new[]
{
pool.GetEngine(),
pool.GetEngine(),
pool.GetEngine(),
};
CollectionAssert.AreEquivalent(engines, resultEngines);
}
public void DisposeDisposesAllEngines()
{
var engines = new[]
{
new Mock <IJsEngine>(),
new Mock <IJsEngine>(),
new Mock <IJsEngine>(),
new Mock <IJsEngine>(),
};
var factory = new Mock <IEngineFactoryForMock>();
factory.SetupSequence(x => x.EngineFactory())
.Returns(engines[0].Object)
.Returns(engines[1].Object)
.Returns(engines[2].Object)
.Returns(engines[3].Object);
var config = new JsPoolConfig
{
StartEngines = 3,
EngineFactory = factory.Object.EngineFactory
};
var pool = new JsPool(config);
pool.Dispose();
foreach (var engine in engines)
{
engine.Verify(x => x.Dispose());
}
}
public void GetEngineReturnsAllAvailableEngines()
{
var engines = new[]
{
new Mock <IJsEngine>().Object,
new Mock <IJsEngine>().Object,
new Mock <IJsEngine>().Object,
};
var factory = new Mock <IEngineFactoryForMock>();
factory.SetupSequence(x => x.EngineFactory())
// Initial call to factory is to determine engine type, we don't care
// about that here.
.Returns(new Mock <IJsEngine>().Object)
.Returns(engines[0])
.Returns(engines[1])
.Returns(engines[2]);
var config = new JsPoolConfig
{
StartEngines = 3,
EngineFactory = factory.Object.EngineFactory
};
var pool = new JsPool(config);
var resultEngines = new[]
{
pool.GetEngine(),
pool.GetEngine(),
pool.GetEngine(),
};
CollectionAssert.AreEquivalent(engines, resultEngines);
}
static void Main(string[] args)
{
var pool = new JsPool(new JsPoolConfig
{
Initializer = initEngine =>
{
// In a real app you'd probably use ExecuteFile and ExecuteResource to load
// libraries into the engine.
initEngine.Execute(@"
function sayHello(name) {
return 'Hello ' + name + '!';
}
" );
}
});
// Get an engine from the pool
var engine = pool.GetEngine();
var message = engine.CallFunction <string>("sayHello", "Daniel");
Console.WriteLine(message); // "Hello Daniel!"
Console.ReadKey();
// Always release an engine when you're done with it.
pool.ReturnEngineToPool(engine);
// Disposing the pool will also dispose all its engines. Always dispose it when
// it is no longer required.
pool.Dispose();
}
public JsEnginePool(
Action <IJsEngine> initializer,
int startEngines,
int maxEngines,
int maxUsagesPerEngine,
TimeSpan engineTimeout)
{
// First we need to check if the JsEngineSwitcher has been configured. We'll do this
// by checking the DefaultEngineName being set. If that's there we can safely assume
// its been configured somehow (maybe via a configuration file). If not we'll wire up
// Jint as the default engine.
if (string.IsNullOrWhiteSpace(JsEngineSwitcher.Instance.DefaultEngineName))
{
JsEngineSwitcher.Instance.EngineFactories.Add(new JintJsEngineFactory());
JsEngineSwitcher.Instance.DefaultEngineName = JintJsEngine.EngineName;
}
_pool = new JsPool <JsEngine>(new JsPoolConfig <JsEngine>
{
EngineFactory = () => new JsEngine(JsEngineSwitcher.Instance.CreateDefaultEngine()),
Initializer = x => initializer?.Invoke(x),
StartEngines = startEngines,
MaxEngines = maxEngines,
MaxUsagesPerEngine = maxUsagesPerEngine,
GetEngineTimeout = engineTimeout
});
}
public void GetEngineReturnsAllAvailableEngines()
{
var engines = new[]
{
new Mock <IJsEngine>().Object,
new Mock <IJsEngine>().Object,
new Mock <IJsEngine>().Object,
};
var factory = new Mock <IEngineFactoryForMock>();
factory.SetupSequence(x => x.EngineFactory())
.Returns(engines[0])
.Returns(engines[1])
.Returns(engines[2]);
var config = new JsPoolConfig
{
StartEngines = 3,
EngineFactory = factory.Object.EngineFactory
};
var pool = new JsPool(config);
var resultEngines = new[]
{
pool.GetEngine().InnerEngine,
pool.GetEngine().InnerEngine,
pool.GetEngine().InnerEngine,
};
Assert.Equal(engines, resultEngines);
}
static void Main(string[] args)
{
var pool = new JsPool(new JsPoolConfig
{
Initializer = initEngine =>
{
// In a real app you'd probably use ExecuteFile and ExecuteResource to load
// libraries into the engine.
initEngine.Execute(@"
function sayHello(name) {
return 'Hello ' + name + '!';
}
");
}
});
// Get an engine from the pool
var engine = pool.GetEngine();
var message = engine.CallFunction<string>("sayHello", "Daniel");
Console.WriteLine(message); // "Hello Daniel!"
Console.ReadKey();
// Always release an engine when you're done with it.
pool.ReturnEngineToPool(engine);
// Disposing the pool will also dispose all its engines. Always dispose it when
// it is no longer required.
pool.Dispose();
}
/// <summary>
/// Initializes a new instance of the <see cref="ReactViewEngine"/> class.
/// </summary>
public ReactViewEngine()
{
this.pool = new JsPool(new JsPoolConfig
{
// TODO uncomment the following line to enable unstable watch mode, see Daniel15/JSPool#9
//// WatchPath = ReactConfiguration.ClientPath,
WatchFiles = new string[] { Script.Path },
Initializer = initEngine => initEngine.ExecuteFile(Script.Path)
});
}
/// <summary>
/// Initialize the JSPool
/// </summary>
/// <param name="availableFactories"></param>
/// <param name="configuration"></param>
public JavascriptFactory(IEnumerable <FactoryRegistration> availableFactories, IJavascriptConfiguration configuration)
{
if (!configuration.RenderServerSide)
{
return;
}
_configuration = configuration;
_factory = GetFactory(availableFactories);
_pool = CreatePool();
}
/// <summary>
/// Clean up all engines
/// </summary>
public virtual void Dispose()
{
_disposed = true;
if (_pool == null)
{
return;
}
_pool.Dispose();
_pool = null;
}
public static void InitJsPool()
{
JsEngineSwitcher.Instance.EngineFactories.AddChakraCore();
JsEngineSwitcher.Instance.DefaultEngineName = ChakraCoreJsEngine.EngineName;
_myJsPool = new JsPool(new JsPoolConfig
{
Initializer = initEngine =>
{
initEngine.ExecuteFile(Path.Combine(ApplicationEnvironment.ApplicationBasePath, "cmd5.js"),
Encoding.UTF8);
}
});
}
public void ConstructorCreatesEngines()
{
var factory = new Mock<IEngineFactoryForMock>();
factory.Setup(x => x.EngineFactory()).Returns(() => new Mock<IJsEngine>().Object);
var config = new JsPoolConfig
{
StartEngines = 5,
EngineFactory = factory.Object.EngineFactory
};
var pool = new JsPool(config);
Assert.AreEqual(5, pool.AvailableEngineCount);
// 6 times because one is at the very beginning to check the engine type
factory.Verify(x => x.EngineFactory(), Times.Exactly(6));
}
/// <summary>
/// Create a new js Pool
/// </summary>
/// <returns></returns>
private JsPool CreatePool()
{
var config = new JsPoolConfig
{
EngineFactory = _factory,
Initializer = LoadScripts
};
var pool = new JsPool(config);
// Reset the recycle exception on recycle. If there *are* errors loading the scripts
// during recycle, the errors will be caught in the initializer.
pool.Recycled += null;
return(pool);
}
public void ConstructorCreatesEngines()
{
var factory = new Mock <IEngineFactoryForMock>();
factory.Setup(x => x.EngineFactory()).Returns(() => new Mock <IJsEngine>().Object);
var config = new JsPoolConfig
{
StartEngines = 5,
EngineFactory = factory.Object.EngineFactory
};
var pool = new JsPool(config);
Assert.Equal(5, pool.AvailableEngineCount);
factory.Verify(x => x.EngineFactory(), Times.Exactly(5));
}
public void WatchPathWithoutWatchFilesDoesNotThrow()
{
var factory = new Mock <IEngineFactoryForMock>();
factory.Setup(x => x.EngineFactory()).Returns(() => new Mock <IJsEngine>().Object);
var config = new JsPoolConfig
{
StartEngines = 2,
EngineFactory = factory.Object.EngineFactory,
WatchPath = Directory.GetCurrentDirectory(),
};
// Should not throw
// ReSharper disable once UnusedVariable
var pool = new JsPool(config);
}
public void ConstructorCreatesEngines()
{
var factory = new Mock <IEngineFactoryForMock>();
factory.Setup(x => x.EngineFactory()).Returns(() => new Mock <IJsEngine>().Object);
var config = new JsPoolConfig
{
StartEngines = 5,
EngineFactory = factory.Object.EngineFactory
};
var pool = new JsPool(config);
Assert.AreEqual(5, pool.AvailableEngineCount);
// 6 times because one is at the very beginning to check the engine type
factory.Verify(x => x.EngineFactory(), Times.Exactly(6));
}
public void ReturnEngineDisposesIfAtMaxUsages()
{
var mockEngine1 = new Mock <IJsEngine>();
var mockEngine2 = new Mock <IJsEngine>();
var factory = new Mock <IEngineFactoryForMock>();
factory.SetupSequence(x => x.EngineFactory())
.Returns(mockEngine1.Object)
.Returns(mockEngine2.Object);
var config = new JsPoolConfig
{
StartEngines = 1,
MaxUsagesPerEngine = 3,
EngineFactory = factory.Object.EngineFactory
};
var pool = new JsPool(config);
// First two usages should not recycle it
using (var engine = pool.GetEngine())
{
Assert.Equal(mockEngine1.Object, engine.InnerEngine);
}
mockEngine1.Verify(x => x.Dispose(), Times.Never);
using (var engine = pool.GetEngine())
{
Assert.Equal(mockEngine1.Object, engine.InnerEngine);
}
mockEngine1.Verify(x => x.Dispose(), Times.Never);
// Third usage should recycle it, since the max usages is 3
using (var engine = pool.GetEngine())
{
Assert.Equal(mockEngine1.Object, engine.InnerEngine);
}
mockEngine1.Verify(x => x.Dispose());
// Next usage should get a new engine
using (var engine = pool.GetEngine())
{
Assert.Equal(mockEngine2.Object, engine.InnerEngine);
}
}
public JsEngineManager(IJsEngineManagerConfiguration config)
{
if (config == null)
{
throw new ArgumentNullException(nameof(config));
}
this._modules = ResolvePaths(config.Modules ?? new List <string>()).ToList();
// replace with custom object & mapping
this._poolConfig = new JsPoolConfig
{
EngineFactory = new ChakraCoreJsEngineFactory().CreateEngine,
Initializer = this.Initializer()
};
if (this._modules.Count > 0)
{
// Get common root path for all files and configure watching.
this._poolConfig.WatchPath = this.GetCommonRoot(this._modules);
this._poolConfig.WatchFiles = this._modules;
}
if (config.StartEngines.HasValue)
{
this._poolConfig.StartEngines = config.StartEngines.Value;
}
if (config.MaxEngines.HasValue)
{
this._poolConfig.MaxEngines = config.MaxEngines.Value;
}
if (config.MaxUsagesPerEngine.HasValue)
{
this._poolConfig.MaxUsagesPerEngine = config.MaxUsagesPerEngine.Value;
}
this._pool = new JsPool(this._poolConfig);
// Clean combined scripts on any script file change
this._pool.Recycled += (sender, args) => { this._scripts = null; };
}
public void ConcurrentGetAndReleaseEnginesIsSafe()
{
const int ConcurrentThreadCount = 100;
var config = new JsPoolConfig
{
StartEngines = 0,
MaxEngines = ConcurrentThreadCount,
EngineFactory = () => new Mock <IJsEngine>().Object
};
var pool = new JsPool(config);
ThreadStart getReleaseEngine = () =>
{
for (var i = 0; i < 10000; ++i)
{
IJsEngine engine = pool.GetEngine();
pool.ReturnEngineToPool(engine);
}
};
IList <Thread> threads = new List <Thread>();
for (var i = 0; i < ConcurrentThreadCount; ++i)
{
threads.Add(new Thread(getReleaseEngine));
}
foreach (var thread in threads)
{
thread.Start();
}
threads[0].Join();
for (var i = 1; i < threads.Count; ++i)
{
Thread thread = threads[i];
thread.Join();
}
Assert.AreEqual(0, pool.EngineCount);
}
public void ShouldIgnoreReturnToPoolIfUnknownEngine()
{
var factory = new Mock <IEngineFactoryForMock>();
factory.Setup(x => x.EngineFactory()).Returns(() => new Mock <IJsEngine>().Object);
var config = new JsPoolConfig
{
StartEngines = 1,
EngineFactory = factory.Object.EngineFactory
};
var rogueEngine = new Mock <IJsEngine>();
var pool = new JsPool(config);
pool.ReturnEngineToPool(rogueEngine.Object);
Assert.AreEqual(1, pool.AvailableEngineCount);
Assert.AreEqual(1, pool.EngineCount);
rogueEngine.Verify(x => x.Dispose());
}
public void ReturnEngineToPoolAddsToAvailableEngines()
{
var factory = new Mock <IEngineFactoryForMock>();
factory.Setup(x => x.EngineFactory()).Returns(() => new Mock <IJsEngine>().Object);
var config = new JsPoolConfig
{
StartEngines = 2,
EngineFactory = factory.Object.EngineFactory
};
var pool = new JsPool(config);
Assert.AreEqual(2, pool.AvailableEngineCount);
var engine = pool.GetEngine();
Assert.AreEqual(1, pool.AvailableEngineCount);
pool.ReturnEngineToPool(engine);
Assert.AreEqual(2, pool.AvailableEngineCount);
}
static void Main(string[] args)
{
// Configure JavaScriptEngineSwitcher. Generally V8 is preferred, however
// it's currently not supported on .NET Core.
IJsEngineSwitcher engineSwitcher = JsEngineSwitcher.Current;
#if NETCOREAPP1_0 || NETCOREAPP2_0
engineSwitcher.EngineFactories.AddChakraCore();
engineSwitcher.DefaultEngineName = ChakraCoreJsEngine.EngineName;
#else
engineSwitcher.EngineFactories.AddV8();
engineSwitcher.DefaultEngineName = V8JsEngine.EngineName;
#endif
var pool = new JsPool(new JsPoolConfig
{
Initializer = initEngine =>
{
// In a real app you'd probably use ExecuteFile and ExecuteResource to load
// libraries into the engine.
initEngine.Execute(@"
function sayHello(name) {
return 'Hello ' + name + '!';
}
" );
}
});
// Get an engine from the pool
// Disposing the engine will return it to the pool - The using() block will do that for us!
using (var engine = pool.GetEngine())
{
var message = engine.CallFunction <string>("sayHello", "Daniel");
Console.WriteLine(message); // "Hello Daniel!"
}
Console.ReadKey();
// Disposing the pool will also dispose all its engines. Always dispose it when
// it is no longer required.
pool.Dispose();
}
public void ReturnEngineDisposesIfAtMaxUsages()
{
var mockEngine1 = new Mock <IJsEngine>();
var mockEngine2 = new Mock <IJsEngine>();
var factory = new Mock <IEngineFactoryForMock>();
factory.SetupSequence(x => x.EngineFactory())
// First engine is a dummy engine to check functionality
.Returns(new Mock <IJsEngine>().Object)
.Returns(mockEngine1.Object)
.Returns(mockEngine2.Object);
var config = new JsPoolConfig
{
StartEngines = 1,
MaxUsagesPerEngine = 3,
EngineFactory = factory.Object.EngineFactory
};
var pool = new JsPool(config);
// First two usages should not recycle it
var engine = pool.GetEngine();
Assert.AreEqual(mockEngine1.Object, engine);
pool.ReturnEngineToPool(engine);
mockEngine1.Verify(x => x.Dispose(), Times.Never);
engine = pool.GetEngine();
Assert.AreEqual(mockEngine1.Object, engine);
pool.ReturnEngineToPool(engine);
mockEngine1.Verify(x => x.Dispose(), Times.Never);
// Third usage should recycle it, since the max usages is 3
engine = pool.GetEngine();
pool.ReturnEngineToPool(engine);
mockEngine1.Verify(x => x.Dispose());
// Next usage should get a new engine
engine = pool.GetEngine();
Assert.AreEqual(mockEngine2.Object, engine);
}
public void GetEngineFailsIfAtMaximum()
{
var factory = new Mock <IEngineFactoryForMock>();
factory.Setup(x => x.EngineFactory()).Returns(() => new Mock <IJsEngine>().Object);
var config = new JsPoolConfig
{
StartEngines = 1,
MaxEngines = 1,
EngineFactory = factory.Object.EngineFactory
};
var pool = new JsPool(config);
factory.Verify(x => x.EngineFactory(), Times.Exactly(2));
pool.GetEngine(); // First engine created on init
Assert.Throws <JsPoolExhaustedException>(() =>
pool.GetEngine(TimeSpan.Zero)
);
}
public void ConcurrentGetAndReleaseEnginesIsSafe()
{
const int ConcurrentThreadCount = 100;
var config = new JsPoolConfig
{
StartEngines = 0,
MaxEngines = ConcurrentThreadCount,
EngineFactory = () => new Mock<IJsEngine>().Object
};
var pool = new JsPool(config);
ThreadStart getReleaseEngine = () =>
{
for (var i = 0; i < 10000; ++i)
{
IJsEngine engine = pool.GetEngine();
pool.ReturnEngineToPool(engine);
}
};
IList<Thread> threads = new List<Thread>();
for (var i = 0; i < ConcurrentThreadCount; ++i)
{
threads.Add(new Thread(getReleaseEngine));
}
foreach (var thread in threads)
{
thread.Start();
}
threads[0].Join(10000);
for (var i = 1; i < threads.Count; ++i)
{
Thread thread = threads[i];
thread.Join(100);
}
Assert.AreEqual(0, pool.EngineCount);
}
public void RecycleCreatesNewEngines()
{
var factory = new Mock <IEngineFactoryForMock>();
factory.Setup(x => x.EngineFactory()).Returns(() => new Mock <IJsEngine>().Object);
var config = new JsPoolConfig
{
StartEngines = 2,
EngineFactory = factory.Object.EngineFactory
};
var pool = new JsPool(config);
Assert.Equal(2, pool.AvailableEngineCount);
factory.Verify(x => x.EngineFactory(), Times.Exactly(2));
// Now recycle the pool
pool.Recycle();
Assert.Equal(2, pool.AvailableEngineCount);
// Two more engines should have been created
factory.Verify(x => x.EngineFactory(), Times.Exactly(4));
}
public void GetEngineCreatesNewEngineIfNotAtMaximum()
{
var factory = new Mock<IEngineFactoryForMock>();
factory.Setup(x => x.EngineFactory()).Returns(new Mock<IJsEngine>().Object);
var config = new JsPoolConfig
{
StartEngines = 1,
MaxEngines = 2,
EngineFactory = factory.Object.EngineFactory
};
var pool = new JsPool(config);
factory.Verify(x => x.EngineFactory(), Times.Exactly(2));
pool.GetEngine(); // First engine created on init
factory.Verify(x => x.EngineFactory(), Times.Exactly(2));
Assert.AreEqual(1, pool.EngineCount);
Assert.AreEqual(0, pool.AvailableEngineCount);
pool.GetEngine(); // Second engine created JIT
factory.Verify(x => x.EngineFactory(), Times.Exactly(3));
Assert.AreEqual(2, pool.EngineCount);
Assert.AreEqual(0, pool.AvailableEngineCount);
}
public void RecycleFiresRecycledEvent()
{
var callCount = 0;
var factory = new Mock <IEngineFactoryForMock>();
factory.Setup(x => x.EngineFactory()).Returns(() => new Mock <IJsEngine>().Object);
var config = new JsPoolConfig
{
StartEngines = 2,
EngineFactory = factory.Object.EngineFactory
};
var pool = new JsPool(config);
pool.Recycled += (sender, args) => callCount++;
Assert.AreEqual(0, callCount);
pool.Recycle();
Assert.AreEqual(1, callCount);
pool.Recycle();
Assert.AreEqual(2, callCount);
}
public void RecycleCreatesNewEngines()
{
var factory = new Mock<IEngineFactoryForMock>();
factory.Setup(x => x.EngineFactory()).Returns(() => new Mock<IJsEngine>().Object);
var config = new JsPoolConfig
{
StartEngines = 2,
EngineFactory = factory.Object.EngineFactory
};
var pool = new JsPool(config);
Assert.AreEqual(2, pool.AvailableEngineCount);
// 3 times because one is at the very beginning to check the engine type
factory.Verify(x => x.EngineFactory(), Times.Exactly(3));
// Now recycle the pool
pool.Recycle();
Assert.AreEqual(2, pool.AvailableEngineCount);
// Two more engines should have been created
factory.Verify(x => x.EngineFactory(), Times.Exactly(5));
}
public void RecycleFiresRecycledEvent()
{
var callCount = 0;
var factory = new Mock<IEngineFactoryForMock>();
factory.Setup(x => x.EngineFactory()).Returns(() => new Mock<IJsEngine>().Object);
var config = new JsPoolConfig
{
StartEngines = 2,
EngineFactory = factory.Object.EngineFactory
};
var pool = new JsPool(config);
pool.Recycled += (sender, args) => callCount++;
Assert.AreEqual(0, callCount);
pool.Recycle();
Assert.AreEqual(1, callCount);
pool.Recycle();
Assert.AreEqual(2, callCount);
}
public PooledJsEngine(JsEngine engine, JsPool <JsEngine> pool)
{
Engine = engine;
Pool = pool;
}
public void ReturnEngineToPoolAddsToAvailableEngines()
{
var factory = new Mock<IEngineFactoryForMock>();
factory.Setup(x => x.EngineFactory()).Returns(() => new Mock<IJsEngine>().Object);
var config = new JsPoolConfig
{
StartEngines = 2,
EngineFactory = factory.Object.EngineFactory
};
var pool = new JsPool(config);
Assert.AreEqual(2, pool.AvailableEngineCount);
var engine = pool.GetEngine();
Assert.AreEqual(1, pool.AvailableEngineCount);
pool.ReturnEngineToPool(engine);
Assert.AreEqual(2, pool.AvailableEngineCount);
}
public void ReturnEngineDisposesIfAtMaxUsages()
{
var mockEngine1 = new Mock<IJsEngine>();
var mockEngine2 = new Mock<IJsEngine>();
var factory = new Mock<IEngineFactoryForMock>();
factory.SetupSequence(x => x.EngineFactory())
// First engine is a dummy engine to check functionality
.Returns(new Mock<IJsEngine>().Object)
.Returns(mockEngine1.Object)
.Returns(mockEngine2.Object);
var config = new JsPoolConfig
{
StartEngines = 1,
MaxUsagesPerEngine = 3,
EngineFactory = factory.Object.EngineFactory
};
var pool = new JsPool(config);
// First two usages should not recycle it
var engine = pool.GetEngine();
Assert.AreEqual(mockEngine1.Object, engine);
pool.ReturnEngineToPool(engine);
mockEngine1.Verify(x => x.Dispose(), Times.Never);
engine = pool.GetEngine();
Assert.AreEqual(mockEngine1.Object, engine);
pool.ReturnEngineToPool(engine);
mockEngine1.Verify(x => x.Dispose(), Times.Never);
// Third usage should recycle it, since the max usages is 3
engine = pool.GetEngine();
pool.ReturnEngineToPool(engine);
mockEngine1.Verify(x => x.Dispose());
// Next usage should get a new engine
engine = pool.GetEngine();
Assert.AreEqual(mockEngine2.Object, engine);
}
public PooledJavaScriptEngine(JavaScriptEngine engine, JsPool <JavaScriptEngine> pool)
{
Engine = engine;
Pool = pool;
}
public void ShouldIgnoreReturnToPoolIfUnknownEngine()
{
var factory = new Mock<IEngineFactoryForMock>();
factory.Setup(x => x.EngineFactory()).Returns(() => new Mock<IJsEngine>().Object);
var config = new JsPoolConfig
{
StartEngines = 1,
EngineFactory = factory.Object.EngineFactory
};
var rogueEngine = new Mock<IJsEngine>();
var pool = new JsPool(config);
pool.ReturnEngineToPool(rogueEngine.Object);
Assert.AreEqual(1, pool.AvailableEngineCount);
Assert.AreEqual(1, pool.EngineCount);
rogueEngine.Verify(x => x.Dispose());
}
public void WatchPathWithoutWatchFilesDoesNotThrow()
{
var factory = new Mock<IEngineFactoryForMock>();
factory.Setup(x => x.EngineFactory()).Returns(() => new Mock<IJsEngine>().Object);
var config = new JsPoolConfig
{
StartEngines = 2,
EngineFactory = factory.Object.EngineFactory,
WatchPath = Directory.GetCurrentDirectory(),
};
Assert.DoesNotThrow(() =>
{
// ReSharper disable once UnusedVariable
var pool = new JsPool(config);
});
}
public void DisposeDisposesAllEngines()
{
var engines = new[]
{
new Mock<IJsEngine>(),
new Mock<IJsEngine>(),
new Mock<IJsEngine>(),
new Mock<IJsEngine>(),
};
var factory = new Mock<IEngineFactoryForMock>();
factory.SetupSequence(x => x.EngineFactory())
.Returns(engines[0].Object)
.Returns(engines[1].Object)
.Returns(engines[2].Object)
.Returns(engines[3].Object);
var config = new JsPoolConfig
{
StartEngines = 3,
EngineFactory = factory.Object.EngineFactory
};
var pool = new JsPool(config);
pool.Dispose();
foreach (var engine in engines)
{
engine.Verify(x => x.Dispose());
}
}
public void GetEngineFailsIfAtMaximum()
{
var factory = new Mock<IEngineFactoryForMock>();
factory.Setup(x => x.EngineFactory()).Returns(() => new Mock<IJsEngine>().Object);
var config = new JsPoolConfig
{
StartEngines = 1,
MaxEngines = 1,
EngineFactory = factory.Object.EngineFactory
};
var pool = new JsPool(config);
factory.Verify(x => x.EngineFactory(), Times.Exactly(2));
pool.GetEngine(); // First engine created on init
Assert.Throws<JsPoolExhaustedException>(() =>
pool.GetEngine(TimeSpan.Zero)
);
}
