// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT license.
using System;
using System.Diagnostics.CodeAnalysis;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.ClearScript.JavaScript;
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 class ExtensionsTest : ClearScriptTest
{
#region setup / teardown
private ScriptEngine engine;
[TestInitialize]
public void TestInitialize()
{
engine = new V8ScriptEngine(V8ScriptEngineFlags.EnableDebugging);
engine.AddHostType(typeof(Extensions));
engine.AddHostType(typeof(JavaScriptExtensions));
}
[TestCleanup]
public void TestCleanup()
{
engine.Dispose();
BaseTestCleanup();
}
#endregion
#region test methods
// ReSharper disable InconsistentNaming
[TestMethod, TestCategory("Extensions")]
public void Extensions_ToHostType()
{
engine.Script.ClrMath = typeof(Math).ToHostType(engine);
Assert.AreEqual(Math.PI, engine.Evaluate("ClrMath.PI"));
engine.Script.randomType = typeof(Random);
Assert.IsInstanceOfType(engine.Evaluate("new (randomType.ToHostType())"), typeof(Random));
}
[TestMethod, TestCategory("Extensions")]
public void Extensions_ToRestrictedHostObject()
{
IConvertible convertible = 123;
engine.Script.convertible = convertible.ToRestrictedHostObject(engine);
Assert.AreEqual(TypeCode.Int32, engine.Evaluate("convertible.GetTypeCode()"));
engine.AddHostType(typeof(IConvertible));
Assert.AreEqual(TypeCode.Int32, engine.Evaluate("Extensions.ToRestrictedHostObject(IConvertible, 456).GetTypeCode()"));
}
[TestMethod, TestCategory("Extensions")]
public void Extensions_JavaScript_ToPromise()
{
engine.Script.promise = Task.FromResult(Math.PI).ToPromise(engine);
engine.Execute("(async function () { result = await promise; })()");
Assert.AreEqual(Math.PI, engine.Script.result);
engine.Script.task = Task.FromResult(Math.E);
engine.Execute("(async function () { result = await task.ToPromise(); })()");
Assert.AreEqual(Math.E, engine.Script.result);
}
[TestMethod, TestCategory("Extensions")]
public void Extensions_JavaScript_ToPromise_Faulted()
{
const string message = "No task for you!";
var task = Task.FromException(new UnauthorizedAccessException(message));
engine.Script.promise = task.ToPromise(engine);
engine.Execute("(async function () { try { result = await promise; } catch (exception) { result = exception.hostException.InnerException.InnerException.Message; } })()");
Assert.AreEqual(message, engine.Script.result);
engine.Script.task = task;
engine.Execute("(async function () { try { result = await task.ToPromise(); } catch (exception) { result = exception.hostException.InnerException.InnerException.Message; } })()");
Assert.AreEqual(message, engine.Script.result);
}
[TestMethod, TestCategory("Extensions")]
public void Extensions_JavaScript_ToPromise_Canceled()
{
var message = new TaskCanceledException().Message;
var task = Task.FromCanceled(new CancellationToken(true));
engine.Script.promise = task.ToPromise(engine);
engine.Execute("(async function () { try { result = await promise; } catch (exception) { result = exception.hostException.InnerException.InnerException.Message; } })()");
Assert.AreEqual(message, engine.Script.result);
engine.Script.task = task;
engine.Execute("(async function () { try { result = await task.ToPromise(); } catch (exception) { result = exception.hostException.InnerException.InnerException.Message; } })()");
Assert.AreEqual(message, engine.Script.result);
}
[TestMethod, TestCategory("Extensions")]
public void Extensions_JavaScript_ToPromise_NoResult()
{
engine.Script.promise = RunAsTask(() => engine.Script.result = Math.PI).ToPromise(engine);
engine.Execute("(async function () { await promise; })()");
Assert.AreEqual(Math.PI, engine.Script.result);
engine.Script.task = RunAsTask(() => engine.Script.result = Math.E);
engine.Execute("(async function () { await task.ToPromise(); })()");
Assert.AreEqual(Math.E, engine.Script.result);
}
[TestMethod, TestCategory("Extensions")]
public void Extensions_JavaScript_ToPromise_NoResult_Faulted()
{
const string message = "No task for you!";
var task = Task.FromException(new UnauthorizedAccessException(message));
engine.Script.promise = task.ToPromise(engine);
engine.Execute("(async function () { try { result = await promise; } catch (exception) { result = exception.hostException.InnerException.InnerException.Message; } })()");
Assert.AreEqual(message, engine.Script.result);
engine.Script.task = task;
engine.Execute("(async function () { try { result = await task.ToPromise(); } catch (exception) { result = exception.hostException.InnerException.InnerException.Message; } })()");
Assert.AreEqual(message, engine.Script.result);
}
[TestMethod, TestCategory("Extensions")]
public void Extensions_JavaScript_ToPromise_NoResult_Canceled()
{
var message = new TaskCanceledException().Message;
var task = Task.FromCanceled(new CancellationToken(true));
engine.Script.promise = task.ToPromise(engine);
engine.Execute("(async function () { try { result = await promise; } catch (exception) { result = exception.hostException.InnerException.InnerException.Message; } })()");
Assert.AreEqual(message, engine.Script.result);
engine.Script.task = task;
engine.Execute("(async function () { try { result = await task.ToPromise(); } catch (exception) { result = exception.hostException.InnerException.InnerException.Message; } })()");
Assert.AreEqual(message, engine.Script.result);
}
[TestMethod, TestCategory("Extensions")]
public void Extensions_JavaScript_ToTask()
{
engine.AddHostType(typeof(Task));
Assert.AreEqual(Math.PI, EvaluateAsync(@"(async function () { await Task.Delay(100).ToPromise(); return Math.PI; })()").Result);
}
[TestMethod, TestCategory("Extensions")]
public void Extensions_JavaScript_ToTask_Fail()
{
engine.AddHostType(typeof(Task));
TestUtil.AssertException(() => EvaluateAsync(@"(async function () { await Task.Delay(100).ToPromise(); throw new Error('Unauthorized'); })()").Wait());
}
// ReSharper restore InconsistentNaming
#endregion
#region miscellaneous
private static Task RunAsTask(Action action)
{
var task = Task.Run(action);
task.Wait();
return task;
}
private async Task