public async Task JavascriptAsyncErrorsThrowUnhandledException()
{
const string ExceptionMessage = "nooo";
var taskCompletionSource = new TaskCompletionSource <Exception>();
await Run(async() => {
await WithUnhandledExceptionHandling(async() => {
TargetView.ExecuteScript($"function foo() {{ throw new Error('{ExceptionMessage}'); }}; setTimeout(function() {{ foo(); }}, 1); ");
await taskCompletionSource.Task;
var exception = taskCompletionSource.Task.Result;
StringAssert.Contains(ExceptionMessage, exception.Message);
var stack = exception.StackTrace.Split(new[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);
Assert.AreEqual(2, stack.Length);
StringAssert.StartsWith(" at foo in about:blank:line 1", stack.ElementAt(0), "Found " + stack.ElementAt(0));
StringAssert.StartsWith(" at <anonymous> in about:blank:line 1", stack.ElementAt(1), "Found " + stack.ElementAt(1));
},
e => {
taskCompletionSource.SetResult(e);
return(true);
});
});
}
public void UnhandledExceptionEventIsCalled()
{
const string ExceptionMessage = "nooo";
Exception exception = null;
var controlUnhandled = false;
var dispatcherUnhandled = false;
var markAsHandled = true;
DispatcherUnhandledExceptionEventHandler unhandledDispatcherException = (o, e) => {
exception = e.Exception;
dispatcherUnhandled = true;
e.Handled = true;
};
Action <int> assertResult = (result) => {
Assert.NotNull(exception);
Assert.IsTrue(exception.Message.Contains(exception.Message));
Assert.AreEqual(2, result, "Result should not be affected");
};
TargetView.Dispatcher.UnhandledException += unhandledDispatcherException;
WithUnhandledExceptionHandling(() => {
try {
TargetView.ExecuteScript($"throw new Error('{ExceptionMessage}')");
var result = TargetView.EvaluateScript <int>("1+1"); // force exception to occur
assertResult(result);
Assert.IsTrue(controlUnhandled);
Assert.IsFalse(dispatcherUnhandled);
controlUnhandled = false;
markAsHandled = false;
TargetView.ExecuteScript($"throw new Error('{ExceptionMessage}')");
result = TargetView.EvaluateScript <int>("1+1"); // force exception to occur
WaitFor(() => dispatcherUnhandled);
assertResult(result);
Assert.IsTrue(controlUnhandled);
Assert.IsTrue(dispatcherUnhandled);
} finally {
TargetView.Dispatcher.UnhandledException -= unhandledDispatcherException;
}
},
e => {
exception = e;
controlUnhandled = true;
return(markAsHandled);
});
}
public void ExecutionOrderIsRespected()
{
try {
TargetView.ExecuteScript("x = ''");
var expectedResult = "";
// queue 10000 scripts
for (var i = 0; i < 10000; i++)
{
TargetView.ExecuteScript($"x += '{i},'");
expectedResult += i + ",";
}
var result = TargetView.EvaluateScript <string>("x");
Assert.AreEqual(expectedResult, result);
TargetView.ExecuteScript("x = '-'");
result = TargetView.EvaluateScript <string>("x");
Assert.AreEqual("-", result);
} finally {
TargetView.EvaluateScript <bool>("delete x");
}
}
public void JavascriptAsyncErrorsThrowUnhandledException()
{
const string ExceptionMessage = "nooo";
Exception exception = null;
WithUnhandledExceptionHandling(() => {
TargetView.ExecuteScript($"function foo() {{ throw new Error('{ExceptionMessage}'); }}; setTimeout(function() {{ foo(); }}, 1); ");
WaitFor(() => exception != null);
Assert.IsTrue(exception.Message.Contains(ExceptionMessage), "Found " + exception.Message);
var stack = exception.StackTrace.Split(new[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);
Assert.AreEqual(2, stack.Length);
Assert.True(stack.ElementAt(0).StartsWith(" at foo in about:blank:line 1"), "Found " + stack.ElementAt(0));
Assert.True(stack.ElementAt(1).StartsWith(" at <anonymous> in about:blank:line 1"), "Found " + stack.ElementAt(1));
},
e => {
exception = e;
return(true);
});
}
public async Task UnhandledExceptionEventIsCalled()
{
await Run(() => {
const string ExceptionMessage = "nooo";
var taskCompletionSource = new TaskCompletionSource <Exception>();
WithUnhandledExceptionHandling(() => {
TargetView.ExecuteScript($"throw new Error('{ExceptionMessage}')");
var result = TargetView.EvaluateScript <int>("1+1"); // force exception to occur
Assert.AreEqual(2, result, "Result should not be affected");
var exception = taskCompletionSource.Task.Result;
StringAssert.Contains(ExceptionMessage, exception.Message);
},
e => {
taskCompletionSource.SetResult(e);
return(true);
});
});
}