ClearScript/ClearScriptTest/ExtensionsTest.cs at master · aTiKhan/ClearScript · GitHub

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// Licensed under the MIT license.

using System;

using System.Collections;

using System.Collections.Generic;

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

{

// ReSharper disable once PartialTypeWithSinglePart

[TestClass]

[SuppressMessage("Microsoft.Design", "CA1001:TypesThatOwnDisposableFieldsShouldBeDisposable", Justification = "Test classes use TestCleanupAttribute for deterministic teardown.")]

public partial 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<double>(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<double>(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<ScriptEngineException>(() => EvaluateAsync("(async function () { await Task.Delay(100).ToPromise(); throw new Error('Unauthorized'); })()").Wait());

}

[TestMethod, TestCategory("Extensions")]

public void Extension_JavaScript_ToEnumerable_Generator()

{

engine.Execute("foo = (function* () { yield 'This'; yield 'is'; yield 'not'; yield 'a'; yield 'drill!'; })()");

Assert.AreEqual("This is not a drill!", string.Join(" ", engine.Global["foo"].ToEnumerable()));

}

[TestMethod, TestCategory("Extensions")]

public void Extension_JavaScript_ToEnumerable_GenericObject()

{

engine.Execute("foo = { 'This': 1, 'is': 2, 'not': 3, 'a': 4, 'drill!': 5 }");

TestUtil.AssertException<ArgumentException>(() => string.Join(" ", engine.Global["foo"].ToEnumerable()));

engine.Execute("foo[Symbol.iterator] = function* () { for (const item of Object.keys(foo)) yield item; }");

Assert.AreEqual("This is not a drill!", string.Join(" ", engine.Global["foo"].ToEnumerable()));

}

[TestMethod, TestCategory("Extensions")]

public void Extension_JavaScript_ToEnumerable_Array()

{

engine.Execute("foo = [ 'This', 'is', 'not', 'a', 'drill!' ]");

Assert.AreEqual("This is not a drill!", string.Join(" ", engine.Global["foo"].ToEnumerable()));

}

[TestMethod, TestCategory("Extensions")]

public void Extension_JavaScript_ToEnumerable_Managed_Object()

{

engine.Global["bar"] = new PropertyBag { { "This", 1 }, { "is", 2 }, { "not", 3 }, { "a", 4 }, { "drill!", 5 } };

TestUtil.AssertException<ArgumentException>(() => string.Join(" ", engine.Global["bar"].ToEnumerable()));

engine.Execute("foo = (function* () { for (const item of Object.keys(bar)) yield item; })()");

Assert.AreEqual("This is not a drill!", string.Join(" ", engine.Global["foo"].ToEnumerable()));

}

[TestMethod, TestCategory("Extensions")]

public void Extension_JavaScript_ToEnumerable_Managed_Array()

{

engine.Global["bar"] = new[] { "This", "is", "not", "a", "drill!" };

Assert.AreEqual("This is not a drill!", string.Join(" ", engine.Global["bar"].ToEnumerable()));

engine.Global["bar"] = new object[] { "This", "is", "not", "a", "drill!" };

Assert.AreEqual("This is not a drill!", string.Join(" ", engine.Global["bar"].ToEnumerable()));

engine.Execute("foo = (function* () { for (const item of bar) yield item; })()");

Assert.AreEqual("This is not a drill!", string.Join(" ", engine.Global["foo"].ToEnumerable()));

}

[TestMethod, TestCategory("Extensions")]

public void Extension_JavaScript_ToEnumerable_Managed_List()

{

engine.Global["bar"] = new List<string> { "This", "is", "not", "a", "drill!" };

Assert.AreEqual("This is not a drill!", string.Join(" ", engine.Global["bar"].ToEnumerable()));

engine.Global["bar"] = new List<object> { "This", "is", "not", "a", "drill!" };

Assert.AreEqual("This is not a drill!", string.Join(" ", engine.Global["bar"].ToEnumerable()));

engine.Execute("foo = (function* () { for (const item of bar) yield item; })()");

Assert.AreEqual("This is not a drill!", string.Join(" ", engine.Global["foo"].ToEnumerable()));

}

[TestMethod, TestCategory("Extensions")]

public void Extension_JavaScript_ToEnumerable_Managed_ArrayList()

{

engine.Global["bar"] = new ArrayList { "This", "is", "not", "a", "drill!" };

Assert.AreEqual("This is not a drill!", string.Join(" ", engine.Global["bar"].ToEnumerable()));

engine.Execute("foo = (function* () { for (const item of bar) yield item; })()");

Assert.AreEqual("This is not a drill!", string.Join(" ", engine.Global["foo"].ToEnumerable()));

}

[TestMethod, TestCategory("Extensions")]

public void Extension_JavaScript_ToAsyncEnumerable_Generator()

{

engine.Execute("foo = (function* () { yield 'This'; yield 'is'; yield 'not'; yield 'a'; yield 'drill!'; })()");

Assert.AreEqual("This is not a drill!", string.Join(" ", IterateAsyncEnumerable(engine.Global["foo"].ToAsyncEnumerable())));

}

[TestMethod, TestCategory("Extensions")]

public void Extension_JavaScript_ToAsyncEnumerable_AsyncGenerator()

{

engine.Global["delay"] = new Func<int, object>(ms => Task.Delay(ms).ToPromise());

engine.Execute("foo = (async function* () { await delay(1), yield 'This'; await delay(1), yield 'is'; await delay(1), yield 'not'; await delay(1), yield 'a'; await delay(1), yield 'drill!'; })()");

Assert.AreEqual("This is not a drill!", string.Join(" ", IterateAsyncEnumerable(engine.Global["foo"].ToAsyncEnumerable())));

}

[TestMethod, TestCategory("Extensions")]

public void Extension_JavaScript_ToAsyncEnumerable_GenericObject()

{

engine.Execute("foo = { 'This': 1, 'is': 2, 'not': 3, 'a': 4, 'drill!': 5 }");

TestUtil.AssertException<ArgumentException>(() => string.Join(" ", IterateAsyncEnumerable(engine.Global["foo"].ToAsyncEnumerable())));

engine.Execute("foo[Symbol.iterator] = function* () { for (const item of Object.keys(foo)) yield item; }");

Assert.AreEqual("This is not a drill!", string.Join(" ", IterateAsyncEnumerable(engine.Global["foo"].ToAsyncEnumerable())));

engine.Global["delay"] = new Func<int, object>(ms => Task.Delay(ms).ToPromise());

engine.Execute("foo[Symbol.asyncIterator] = async function* () { for (const item of Object.keys(foo)) { await delay(1); yield item; } }");

Assert.AreEqual("This is not a drill!", string.Join(" ", IterateAsyncEnumerable(engine.Global["foo"].ToAsyncEnumerable())));

}

[TestMethod, TestCategory("Extensions")]

public void Extension_JavaScript_ToAsyncEnumerable_Array()

{

engine.Execute("foo = [ 'This', 'is', 'not', 'a', 'drill!' ]");

Assert.AreEqual("This is not a drill!", string.Join(" ", IterateAsyncEnumerable(engine.Global["foo"].ToAsyncEnumerable())));

}

[TestMethod, TestCategory("Extensions")]

public void Extension_JavaScript_ToAsyncEnumerable_Managed_Object()

{

engine.Global["bar"] = new PropertyBag { { "This", 1 }, { "is", 2 }, { "not", 3 }, { "a", 4 }, { "drill!", 5 } };

TestUtil.AssertException<ArgumentException>(() => string.Join(" ", IterateAsyncEnumerable(engine.Global["bar"].ToAsyncEnumerable())));

engine.Execute("foo = (function* () { for (const item of Object.keys(bar)) yield item; })()");

Assert.AreEqual("This is not a drill!", string.Join(" ", IterateAsyncEnumerable(engine.Global["foo"].ToAsyncEnumerable())));

engine.Global["delay"] = new Func<int, object>(ms => Task.Delay(ms).ToPromise());

engine.Execute("foo = (async function* () { for (const item of Object.keys(bar)) { await delay(1); yield item; } })()");

Assert.AreEqual("This is not a drill!", string.Join(" ", IterateAsyncEnumerable(engine.Global["foo"].ToAsyncEnumerable())));

}

[TestMethod, TestCategory("Extensions")]

public void Extension_JavaScript_ToAsyncEnumerable_Managed_Array()

{

engine.Global["bar"] = new[] { "This", "is", "not", "a", "drill!" };

Assert.AreEqual("This is not a drill!", string.Join(" ", IterateAsyncEnumerable(engine.Global["bar"].ToAsyncEnumerable())));

engine.Global["bar"] = new object[] { "This", "is", "not", "a", "drill!" };

Assert.AreEqual("This is not a drill!", string.Join(" ", IterateAsyncEnumerable(engine.Global["bar"].ToAsyncEnumerable())));

engine.Execute("foo = (function* () { for (const item of bar) yield item; })()");

Assert.AreEqual("This is not a drill!", string.Join(" ", IterateAsyncEnumerable(engine.Global["foo"].ToAsyncEnumerable())));

engine.Global["delay"] = new Func<int, object>(ms => Task.Delay(ms).ToPromise());

engine.Execute("foo = (async function* () { for (const item of bar) { await delay(1); yield item; } })()");

Assert.AreEqual("This is not a drill!", string.Join(" ", IterateAsyncEnumerable(engine.Global["foo"].ToAsyncEnumerable())));

}

[TestMethod, TestCategory("Extensions")]

public void Extension_JavaScript_ToAsyncEnumerable_Managed_List()