public void CompletedTaskShouldBeReturnedAsResolvedPromise()
{
var context = new Context();
context.DefineVariable("testAwaitable").Assign(JSValue.Marshal(new Func <string, Task <string> >((input) =>
{
return(Task.FromResult(input));
})));
context.Eval("function testAsync() { return testAwaitable('test'); }");
var task = context.GetVariable("testAsync").As <Function>().Call(new Arguments()).As <Promise>().Task;
Assert.AreEqual("test", task.GetAwaiter().GetResult().ToString());
}
public async Task RejectedPromiseShouldBeReturnedAsFaultedTask()
{
var context = new Context();
context.DefineVariable("testAwaitable").Assign(JSValue.Marshal(new Func <string, Task <string> >(async(input) =>
{
await Task.Delay(500);
throw new Exception();
})));
context.Eval("let result = null; async function testAsync() { result = await testAwaitable('test'); }");
var task = context.GetVariable("testAsync").As <Function>().Call(new Arguments()).As <Promise>().Task;
await Assert.ThrowsExceptionAsync <AggregateException>(async() =>
{
await task;
});
}
public async Task AsyncMethodShouldReturnValue()
{
// Arrange
var request = "value";
var script = $@"
async function script() {{
async function demo() {{
let request = '{request}';
let response = await fetch(request);
check(response);
return response;
}}
let result = await demo();
check(result);
return result;
}}
";
var context = new Context();
context
.DefineVariable("fetch")
.Assign(JSValue.Marshal(new Func <string, Task <string> >(FetchAsync)));
context
.DefineVariable("check")
.Assign(JSValue.Marshal(new Action <string>((value) => { Assert.AreEqual(request, value); })));
context.Eval(script);
// Act
var result = await context.GetVariable("script")
.As <Function>()
.Call(new Arguments())
.As <Promise>()
.Task;
// Assert
Assert.AreEqual(request, result.Value);
}
