public ViewModel()
{
// コマンドの初期化
PlusCommand = new PlusCommand();
MinusCommand = new MinusCommand();
MultiCommand = new MultiCommand();
DivCommand = new DivCommand();
// コマンド実行後の結果をResultに反映
PlusCommand.PropertyChanged += (sender, e) =>
{
Result = ((PlusCommand)sender).Result.ToString();
RaisePropertyChanged(e.PropertyName);
};
MinusCommand.PropertyChanged += (sender, e) =>
{
Result = ((MinusCommand)sender).Result.ToString();
RaisePropertyChanged(e.PropertyName);
};
MultiCommand.PropertyChanged += (sender, e) =>
{
Result = ((MultiCommand)sender).Result.ToString();
RaisePropertyChanged(e.PropertyName);
};
DivCommand.PropertyChanged += (sender, e) =>
{
Result = ((DivCommand)sender).Result;
RaisePropertyChanged(e.PropertyName);
};
}
public SYMathCalculator(ISYReciever reciever)
{
_addCommand = new AddCommand(reciever);
_subtractCommand = new SubtractCommand(reciever);
_multiplyCommand = new MultiplyCommand(reciever);
_divCommand = new DivCommand(reciever);
_powCommand = new PowCommand(reciever);
}
public void TestExecute1()
{
var obj = new DivCommand();
// We expect an exception because we are missing any arguments.
//
obj.Execute(new List <string> {
});
}
public void TestAccept2()
{
var obj = new DivCommand();
// We expect the method to return true.
//
Assert.IsFalse(obj.Accept("command", new List <string> {
}));
}
public void TestExecute4()
{
var obj = new DivCommand();
// We expect an exception because we need exactly two arguments.
//
obj.Execute(new List <string> {
"1", "2", "3"
});
}
public void TestExecute2()
{
var obj = new DivCommand();
// We expect an exception because we are not allowed to divide by zero.
//
obj.Execute(new List <string> {
"1", "0"
});
}
public async Task DivByZeroCommandTest()
{
var services = CreateServices();
var command = new DivCommand()
{
Divisible = 4, Divisor = 0
};
await Assert.ThrowsAsync <DivideByZeroException>(async() => {
await services.Commander().Call(command);
});
}
public async Task DivCommandTest()
{
var services = CreateServices();
var command = new DivCommand()
{
Divisible = 4, Divisor = 2
};
var result = await services.Commander().Call(command);
result.Should().Be(2);
}
protected virtual Task <double> Divide(DivCommand command, CancellationToken cancellationToken = default)
{
var context = CommandContext.GetCurrent <double>();
var handler = context.ExecutionState.Handlers[^ 1];
public virtual void Div(double operand)
{
var cmd = new DivCommand(math, operand);
Calculate(cmd);
}