public void Constructor_Value_EqualsParameter(
[Values(-1, 0, 1)] int value
)
{
// Arrange
ObservableInt observable = new ObservableInt(value);
// Act
// Assert
Assert.That(observable.Value, Is.EqualTo(value));
}
public void SetValue_PreviousValue_EqualsParameter(
[Values(-1, 0, 1)] int value
)
{
// Arrange
ObservableInt observable = new ObservableInt();
// Act
observable.Value = value - 1; //We call twice to set both (prev and value)
observable.Value = value;
// Assert
Assert.That(observable.PreviousValue, Is.EqualTo(value - 1));
}
public void SetValue_Value_EqualsParameter(
[Values(-1, 0, 1)] int value
)
{
// Arrange
ObservableInt observable = new ObservableInt();
observable.Value = value;
// Act
// Assert
Assert.That(observable.Value, Is.EqualTo(value));
}
public void OnChanged_NotInvoked_WhenValueDoesNotChange(
[Values(-1, 0, 1)] int value
)
{
// Arrange
ObservableInt observable = new ObservableInt();
bool isOnChangedCalled = false;
// Act
observable.Value = value;
observable.OnChanged.AddListener(obs =>
{
isOnChangedCalled = true;
});
observable.Value = value;
// Assert
Assert.That(isOnChangedCalled, Is.False);
}
public void OnChanged_EventState_EqualsState(
[Values(-1, 0, 1)] int value
)
{
// Arrange
ObservableInt observable = new ObservableInt();
int previousValue = int.MinValue;
int currentValue = int.MinValue;
// Act
observable.Value = value - 1;
observable.OnChanged.AddListener(obs =>
{
ObservableInt observable2 = obs as ObservableInt;
previousValue = observable2.PreviousValue;
currentValue = observable2.Value;
});
observable.Value = value;
// Assert
Assert.That(observable.PreviousValue, Is.EqualTo(previousValue));
Assert.That(observable.Value, Is.EqualTo(currentValue));
}