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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT license.
using System;
using System.Diagnostics.CodeAnalysis;
using System.Linq;
using System.Threading;
using Microsoft.ClearScript.Util;
using Microsoft.ClearScript.V8;
using Microsoft.VisualStudio.TestTools.UnitTesting;
namespace Microsoft.ClearScript.Test
{
[TestClass]
[SuppressMessage("Microsoft.Design", "CA1001:TypesThatOwnDisposableFieldsShouldBeDisposable", Justification = "Test classes use TestCleanupAttribute for deterministic teardown.")]
public partial class PropertyBagTest : ClearScriptTest
{
#region setup / teardown
private ScriptEngine engine;
[TestInitialize]
public void TestInitialize()
{
BaseTestInitialize();
engine = new V8ScriptEngine(V8ScriptEngineFlags.EnableDebugging);
}
[TestCleanup]
public void TestCleanup()
{
engine.Dispose();
BaseTestCleanup();
}
#endregion
#region test methods
// ReSharper disable InconsistentNaming
[TestMethod, TestCategory("PropertyBag")]
public void PropertyBag_Property()
{
var host = new HostFunctions();
var bag = new PropertyBag { { "host", host } };
engine.AddHostObject("bag", bag);
Assert.AreSame(host, engine.Evaluate("bag.host"));
}
[TestMethod, TestCategory("PropertyBag")]
public void PropertyBag_Property_Scalar()
{
const int value = 123;
var bag = new PropertyBag { { "value", value } };
engine.AddHostObject("bag", bag);
Assert.AreEqual(value, engine.Evaluate("bag.value"));
}
[TestMethod, TestCategory("PropertyBag")]
public void PropertyBag_Property_Struct()
{
var date = new DateTime(2007, 5, 22, 6, 15, 43);
var bag = new PropertyBag { { "date", date } };
engine.AddHostObject("bag", bag);
Assert.AreEqual(date, engine.Evaluate("bag.date"));
}
[TestMethod, TestCategory("PropertyBag")]
public void PropertyBag_Property_GlobalMembers()
{
var host = new HostFunctions();
var bag = new PropertyBag { { "host", host } };
engine.AddHostObject("bag", HostItemFlags.GlobalMembers, bag);
Assert.AreSame(host, engine.Evaluate("host"));
}
[TestMethod, TestCategory("PropertyBag")]
public void PropertyBag_HostDelegate()
{
var methodInvoked = false;
Action method = () => methodInvoked = true;
var bag = new PropertyBag { { "method", method } };
engine.AddHostObject("bag", bag);
engine.Execute("bag.method()");
Assert.IsTrue(methodInvoked);
}
[TestMethod, TestCategory("PropertyBag")]
public void PropertyBag_ScriptProperty()
{
engine.Execute("foo = { bar: false }");
var bag = new PropertyBag { { "foo", engine.Script.foo } };
engine.AddHostObject("bag", bag);
engine.Execute("bag.foo.bar = true");
Assert.IsTrue(engine.Script.foo.bar);
}
[TestMethod, TestCategory("PropertyBag")]
public void PropertyBag_ScriptMethod()
{
engine.Execute("methodInvoked = false; function method() { methodInvoked = true }");
var bag = new PropertyBag { { "method", engine.Script.method } };
engine.AddHostObject("bag", bag);
engine.Execute("bag.method()");
Assert.IsTrue(engine.Script.methodInvoked);
}
[TestMethod, TestCategory("PropertyBag")]
public void PropertyBag_IScriptableObject_OnExpose()
{
var host = new HostFunctions();
var bag = new PropertyBag { { "host", host } };
engine.AddHostObject("bag", bag);
Assert.AreSame(engine, host.GetEngine());
}
[TestMethod, TestCategory("PropertyBag")]
public void PropertyBag_IScriptableObject_OnModify()
{
var bag = new PropertyBag();
engine.AddHostObject("bag", bag);
var host = new HostFunctions();
bag.Add("host", host);
Assert.AreSame(engine, host.GetEngine());
}
[TestMethod, TestCategory("PropertyBag")]
public void PropertyBag_Expando()
{
var bag = new PropertyBag();
engine.AddHostObject("bag", bag);
engine.Execute("bag.foo = 123");
Assert.AreEqual(123, bag["foo"]);
}
[TestMethod, TestCategory("PropertyBag")]
public void PropertyBag_Writable()
{
var bag = new PropertyBag { { "foo", false } };
engine.AddHostObject("bag", bag);
engine.Execute("bag.foo = true");
Assert.IsTrue((bool)bag["foo"]);
}
[TestMethod, TestCategory("PropertyBag")]
public void PropertyBag_Writable_Delete()
{
var bag = new PropertyBag { { "foo", false } };
engine.AddHostObject("bag", bag);
engine.Execute("delete bag.foo");
Assert.IsFalse(bag.ContainsKey("foo"));
}
[TestMethod, TestCategory("PropertyBag")]
public void PropertyBag_ReadOnly()
{
var bag = new PropertyBag(true);
bag.SetPropertyNoCheck("foo", false);
engine.AddHostObject("bag", bag);
TestUtil.AssertException<UnauthorizedAccessException>(() => engine.Execute("bag.foo = true"));
}
[TestMethod, TestCategory("PropertyBag")]
public void PropertyBag_ReadOnly_Delete()
{
var bag = new PropertyBag(true);
bag.SetPropertyNoCheck("foo", false);
engine.AddHostObject("bag", bag);
TestUtil.AssertException<UnauthorizedAccessException>(() => engine.Execute("delete bag.foo"));
}
[TestMethod, TestCategory("PropertyBag")]
public void PropertyBag_ExternalModification_AddProperty()
{
var bag = new PropertyBag { { "foo", 123 } };
engine.AddHostObject("bag", bag);
Assert.AreEqual(123, engine.Evaluate("bag.foo"));
bag.Add("bar", 456);
Assert.AreEqual(456, engine.Evaluate("bag.bar"));
}
[TestMethod, TestCategory("PropertyBag")]
public void PropertyBag_ExternalModification_ChangeProperty()
{
var bag = new PropertyBag { { "foo", 123 } };
engine.AddHostObject("bag", bag);
Assert.AreEqual(123, engine.Evaluate("bag.foo"));
bag["foo"] = 456;
Assert.AreEqual(456, engine.Evaluate("bag.foo"));
}
[TestMethod, TestCategory("PropertyBag")]
public void PropertyBag_ExternalModification_DeleteProperty()
{
var bag = new PropertyBag { { "foo", 123 }, { "bar", 456 } };
engine.AddHostObject("bag", bag);
Assert.AreEqual(456, engine.Evaluate("bag.bar"));
bag.Remove("bar");
Assert.AreSame(Undefined.Value, engine.Evaluate("bag.bar"));
}
[TestMethod, TestCategory("PropertyBag")]
public void PropertyBag_Concurrent()
{
var bag = new ConcurrentPropertyBag();
engine.AddHostObject("bag", bag);
// 32-bit V8 starts failing requests to create new contexts rather quickly. This is
// because each V8 isolate requires (among other things) a 32MB address space
// reservation. 64-bit V8 reserves much larger blocks but benefits from the enormous
// available address space.
var threadCount = Environment.Is64BitProcess ? 64 : 16;
var engineCount = 0;
var startEvent = new ManualResetEventSlim(false);
var checkpointEvent = new ManualResetEventSlim(false);
var continueEvent = new ManualResetEventSlim(false);
var stopEvent = new ManualResetEventSlim(false);
ParameterizedThreadStart body = arg =>
{
// ReSharper disable AccessToDisposedClosure
var index = (int)arg;
startEvent.Wait();
var scriptEngine = new V8ScriptEngine();
scriptEngine.AddHostObject("bag", bag);
scriptEngine.Global["index"] = index;
scriptEngine.Execute("bag['foo' + index] = index");
Assert.AreEqual(index, scriptEngine.Evaluate("bag['foo' + index]"));
if (Interlocked.Increment(ref engineCount) == threadCount)
{
checkpointEvent.Set();
}
continueEvent.Wait();
scriptEngine.Dispose();
if (Interlocked.Decrement(ref engineCount) == 0)
{
stopEvent.Set();
}
// ReSharper restore AccessToDisposedClosure
};
var threads = Enumerable.Range(0, threadCount).Select(_ => new Thread(body)).ToArray();
threads.ForEach((thread, index) => thread.Start(index));
startEvent.Set();
checkpointEvent.Wait();
Assert.AreEqual(threadCount + 1, bag.EngineCount);
continueEvent.Set();
stopEvent.Wait();
GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced);
Assert.AreEqual(1, bag.EngineCount);
Array.ForEach(threads, thread => thread.Join());
startEvent.Dispose();
checkpointEvent.Dispose();
continueEvent.Dispose();
stopEvent.Dispose();
}
// ReSharper restore InconsistentNaming
#endregion
}
}
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