public Task CanCompleteAsyncCallsWithErrorsDuringDeserialization()
{
// Arrange
var runtime = new TestJSRuntime();
// Act/Assert: Tasks not initially completed
var unrelatedTask = runtime.InvokeAsync <string>("unrelated call", Array.Empty <object>());
var task = runtime.InvokeAsync <int>("test identifier", Array.Empty <object>());
Assert.False(unrelatedTask.IsCompleted);
Assert.False(task.IsCompleted);
var bytes = Encoding.UTF8.GetBytes("Not a string");
var reader = new Utf8JsonReader(bytes);
// Act/Assert: Task can be failed
runtime.EndInvokeJS(
runtime.BeginInvokeCalls[1].AsyncHandle,
/* succeeded: */ true,
ref reader);
Assert.False(unrelatedTask.IsCompleted);
return(AssertTask());
async Task AssertTask()
{
var jsException = await Assert.ThrowsAsync <JSException>(async() => await task);
Assert.IsAssignableFrom <JsonException>(jsException.InnerException);
}
}
public void CanCompleteAsyncCallsAsFailure()
{
// Arrange
var runtime = new TestJSRuntime();
// Act/Assert: Tasks not initially completed
var unrelatedTask = runtime.InvokeAsync <string>("unrelated call", Array.Empty <object>());
var task = runtime.InvokeAsync <string>("test identifier", Array.Empty <object>());
Assert.False(unrelatedTask.IsCompleted);
Assert.False(task.IsCompleted);
var bytes = Encoding.UTF8.GetBytes("\"This is a test exception\"");
var reader = new Utf8JsonReader(bytes);
reader.Read();
// Act/Assert: Task can be failed
runtime.EndInvokeJS(
runtime.BeginInvokeCalls[1].AsyncHandle,
/* succeeded: */ false,
ref reader);
Assert.False(unrelatedTask.IsCompleted);
Assert.True(task.IsCompleted);
var exception = Assert.IsType <AggregateException>(task.AsTask().Exception);
var jsException = Assert.IsType <JSException>(exception.InnerException);
Assert.Equal("This is a test exception", jsException.Message);
}
public async Task InvokeAsync_CancelsAsyncTask_AfterDefaultTimeout()
{
// Arrange
var runtime = new TestJSRuntime();
runtime.DefaultTimeout = TimeSpan.FromSeconds(1);
// Act
var task = runtime.InvokeAsync <object>("test identifier 1", "arg1", 123, true);
// Assert
await Assert.ThrowsAsync <TaskCanceledException>(async() => await task);
}
public async Task InvokeAsync_CancelsAsyncTasksWhenCancellationTokenFires()
{
// Arrange
using var cts = new CancellationTokenSource();
var runtime = new TestJSRuntime();
// Act
var task = runtime.InvokeAsync <object>("test identifier 1", cts.Token, new object[] { "arg1", 123, true });
cts.Cancel();
// Assert
await Assert.ThrowsAsync <TaskCanceledException>(async() => await task);
}
public void DispatchesAsyncCallsWithDistinctAsyncHandles()
{
// Arrange
var runtime = new TestJSRuntime();
// Act
runtime.InvokeAsync <object>("test identifier 1", "arg1", 123, true);
runtime.InvokeAsync <object>("test identifier 2", "some other arg");
// Assert
Assert.Collection(runtime.BeginInvokeCalls,
call =>
{
Assert.Equal("test identifier 1", call.Identifier);
Assert.Equal("[\"arg1\",123,true]", call.ArgsJson);
},
call =>
{
Assert.Equal("test identifier 2", call.Identifier);
Assert.Equal("[\"some other arg\"]", call.ArgsJson);
Assert.NotEqual(runtime.BeginInvokeCalls[0].AsyncHandle, call.AsyncHandle);
});
}
public void CanCompleteAsyncCallsAsSuccess()
{
// Arrange
var runtime = new TestJSRuntime();
// Act/Assert: Tasks not initially completed
var unrelatedTask = runtime.InvokeAsync <string>("unrelated call", Array.Empty <object>());
var task = runtime.InvokeAsync <string>("test identifier", Array.Empty <object>());
Assert.False(unrelatedTask.IsCompleted);
Assert.False(task.IsCompleted);
var bytes = Encoding.UTF8.GetBytes("\"my result\"");
var reader = new Utf8JsonReader(bytes);
// Act/Assert: Task can be completed
runtime.EndInvokeJS(
runtime.BeginInvokeCalls[1].AsyncHandle,
/* succeeded: */ true,
ref reader);
Assert.False(unrelatedTask.IsCompleted);
Assert.True(task.IsCompleted);
Assert.Equal("my result", task.Result);
}
public void InvokeAsync_CompletesSuccessfullyBeforeTimeout()
{
// Arrange
var runtime = new TestJSRuntime();
runtime.DefaultTimeout = TimeSpan.FromSeconds(10);
var reader = new Utf8JsonReader(Encoding.UTF8.GetBytes("null"));
// Act
var task = runtime.InvokeAsync <object>("test identifier 1", "arg1", 123, true);
runtime.EndInvokeJS(2, succeeded: true, ref reader);
Assert.True(task.IsCompletedSuccessfully);
}
public async Task InvokeAsync_DoesNotStartWorkWhenCancellationHasBeenRequested()
{
// Arrange
using var cts = new CancellationTokenSource();
cts.Cancel();
var runtime = new TestJSRuntime();
// Act
var task = runtime.InvokeAsync <object>("test identifier 1", cts.Token, new object[] { "arg1", 123, true });
cts.Cancel();
// Assert
await Assert.ThrowsAsync <TaskCanceledException>(async() => await task);
Assert.Empty(runtime.BeginInvokeCalls);
}
public void CanCompleteAsyncCallsWithComplexType()
{
// Arrange
var runtime = new TestJSRuntime();
var task = runtime.InvokeAsync <TestPoco>("test identifier", Array.Empty <object>());
var bytes = Encoding.UTF8.GetBytes("{\"id\":10, \"name\": \"Test\"}");
var reader = new Utf8JsonReader(bytes);
// Act/Assert: Task can be completed
runtime.EndInvokeJS(
runtime.BeginInvokeCalls[0].AsyncHandle,
/* succeeded: */ true,
ref reader);
Assert.True(task.IsCompleted);
var poco = task.Result;
Assert.Equal(10, poco.Id);
Assert.Equal("Test", poco.Name);
}
public Task CompletingSameAsyncCallMoreThanOnce_IgnoresSecondResultAsync()
{
// Arrange
var runtime = new TestJSRuntime();
// Act/Assert
var task = runtime.InvokeAsync <string>("test identifier", Array.Empty <object>());
var asyncHandle = runtime.BeginInvokeCalls[0].AsyncHandle;
var firstReader = new Utf8JsonReader(Encoding.UTF8.GetBytes("\"Some data\""));
var secondReader = new Utf8JsonReader(Encoding.UTF8.GetBytes("\"Exception\""));
runtime.EndInvokeJS(asyncHandle, true, ref firstReader);
runtime.EndInvokeJS(asyncHandle, false, ref secondReader);
return(AssertTask());
async Task AssertTask()
{
var result = await task;
Assert.Equal("Some data", result);
}
}
public void SerializesDotNetObjectWrappersInKnownFormat()
{
// Arrange
var runtime = new TestJSRuntime();
var obj1 = new object();
var obj2 = new object();
var obj3 = new object();
// Act
// Showing we can pass the DotNetObject either as top-level args or nested
var obj1Ref = DotNetObjectReference.Create(obj1);
var obj1DifferentRef = DotNetObjectReference.Create(obj1);
runtime.InvokeAsync <object>("test identifier",
obj1Ref,
new Dictionary <string, object>
{
{ "obj2", DotNetObjectReference.Create(obj2) },
{ "obj3", DotNetObjectReference.Create(obj3) },
{ "obj1SameRef", obj1Ref },
{ "obj1DifferentRef", obj1DifferentRef },
});
// Assert: Serialized as expected
var call = runtime.BeginInvokeCalls.Single();
Assert.Equal("test identifier", call.Identifier);
Assert.Equal("[{\"__dotNetObject\":1},{\"obj2\":{\"__dotNetObject\":2},\"obj3\":{\"__dotNetObject\":3},\"obj1SameRef\":{\"__dotNetObject\":1},\"obj1DifferentRef\":{\"__dotNetObject\":4}}]", call.ArgsJson);
// Assert: Objects were tracked
Assert.Same(obj1Ref, runtime.GetObjectReference(1));
Assert.Same(obj1, obj1Ref.Value);
Assert.NotSame(obj1Ref, runtime.GetObjectReference(2));
Assert.Same(obj2, runtime.GetObjectReference(2).Value);
Assert.Same(obj3, runtime.GetObjectReference(3).Value);
Assert.Same(obj1, runtime.GetObjectReference(4).Value);
}
