public void InvokeCommandAgainstICommandInTargetPassesTheSpecifiedValueToCanExecuteAndExecute()
{
ICommandHolder fixture = new ICommandHolder();
Subject <int> source = new Subject <int>();
source.InvokeCommand(fixture, x => x.TheCommand);
FakeCommand command = new FakeCommand();
fixture.TheCommand = command;
source.OnNext(42);
Assert.Equal(42, command.CanExecuteParameter);
Assert.Equal(42, command.ExecuteParameter);
}
public void InvokeCommandAgainstICommandInTargetInvokesTheCommand()
{
int executionCount = 0;
ICommandHolder fixture = new ICommandHolder();
Subject <Unit> source = new Subject <Unit>();
source.InvokeCommand(fixture, x => x.TheCommand);
fixture.TheCommand = ReactiveCommand.Create(() => ++ executionCount, outputScheduler: ImmediateScheduler.Instance);
source.OnNext(Unit.Default);
Assert.Equal(1, executionCount);
source.OnNext(Unit.Default);
Assert.Equal(2, executionCount);
}
public void InvokeCommandAgainstICommandInTargetInvokesTheCommand()
{
var executionCount = 0;
var fixture = new ICommandHolder();
var source = new Subject <Unit>();
source.InvokeCommand(fixture, x => x.TheCommand);
fixture.TheCommand = ReactiveCommand.Create(() => ++ executionCount);
source.OnNext(Unit.Default);
Assert.Equal(1, executionCount);
source.OnNext(Unit.Default);
Assert.Equal(2, executionCount);
}
public void InvokeCommandAgainstICommandInTargetRespectsCanExecute()
{
bool executed = false;
BehaviorSubject <bool> canExecute = new BehaviorSubject <bool>(false);
ICommandHolder fixture = new ICommandHolder();
Subject <Unit> source = new Subject <Unit>();
source.InvokeCommand(fixture, x => x.TheCommand);
fixture.TheCommand = ReactiveCommand.Create(() => executed = true, canExecute, ImmediateScheduler.Instance);
source.OnNext(Unit.Default);
Assert.False(executed);
canExecute.OnNext(true);
source.OnNext(Unit.Default);
Assert.True(executed);
}
public void InvokeCommandAgainstICommandInTargetRespectsCanExecuteWindow()
{
bool executed = false;
BehaviorSubject <bool> canExecute = new BehaviorSubject <bool>(false);
ICommandHolder fixture = new ICommandHolder();
Subject <Unit> source = new Subject <Unit>();
source.InvokeCommand(fixture, x => x.TheCommand);
fixture.TheCommand = ReactiveCommand.Create(() => executed = true, canExecute, ImmediateScheduler.Instance);
source.OnNext(Unit.Default);
Assert.False(executed);
// The execution window re-opens, but the above execution request should not be instigated because
// it occurred when the window was closed. Execution requests do not queue up when the window is closed.
canExecute.OnNext(true);
Assert.False(executed);
}
public void InvokeCommandAgainstICommandInTargetSwallowsExceptions()
{
var count = 0;
var fixture = new ICommandHolder();
var command = ReactiveCommand.Create(
() => {
++count;
throw new InvalidOperationException();
});
command.ThrownExceptions.Subscribe();
fixture.TheCommand = command;
var source = new Subject <Unit>();
source.InvokeCommand(fixture, x => x.TheCommand);
source.OnNext(Unit.Default);
source.OnNext(Unit.Default);
Assert.Equal(2, count);
}
public void InvokeCommandAgainstICommandInTargetSwallowsExceptions()
{
int count = 0;
ICommandHolder fixture = new ICommandHolder();
ReactiveCommand <Unit, Unit> command = ReactiveCommand.Create(
() =>
{
++count;
throw new InvalidOperationException();
},
outputScheduler: ImmediateScheduler.Instance);
command.ThrownExceptions.Subscribe();
fixture.TheCommand = command;
Subject <Unit> source = new Subject <Unit>();
source.InvokeCommand(fixture, x => x.TheCommand);
source.OnNext(Unit.Default);
source.OnNext(Unit.Default);
Assert.Equal(2, count);
}