public void SwipeInProgress_is_true_when_swipe_begins()
{
var recognizer = new PlatformSwipeRecognizerStub(new object(), SwipeDirection.Any, 1);
recognizer.OnSwipeBegan(0, 0);
recognizer.SwipeInProgress.Should().BeTrue("since the swipe has begun");
}
public void OnSwipeEnded_ignores_swipe_when_does_not_exceed_threshold(int x1, int y1, int x2, int y2)
{
var recognizer = new PlatformSwipeRecognizerStub(new object(), SwipeDirection.Any, 1);
recognizer.OnSwipeBegan(x1, y1);
recognizer.OnSwipeEnded(x2, y2).Should().BeFalse("because no swipe was detected");
}
public void OnSwipeEnded_ignores_swipe_when_does_not_match_direction_mask(int x1, int y1, int x2, int y2, SwipeDirection directionMask)
{
var recognizer = new PlatformSwipeRecognizerStub(new object(), directionMask, 1);
recognizer.OnSwipeBegan(x1, y1);
recognizer.OnSwipeEnded(x2, y2).Should().BeFalse("because no swipe was detected");
}
public void OnSwipeBegan_throws_if_swipe_already_in_progress()
{
var recognizer = new PlatformSwipeRecognizerStub(new object(), SwipeDirection.Any, 1);
recognizer.OnSwipeBegan(0, 0);
Assert.Throws <InvalidOperationException>(() => recognizer.OnSwipeBegan(0, 0));
}
public void SwipeInProgress_is_false_when_swipe_cancelled()
{
var recognizer = new PlatformSwipeRecognizerStub(new object(), SwipeDirection.Any, 1);
recognizer.OnSwipeBegan(0, 0);
recognizer.OnSwipeCancelled();
recognizer.SwipeInProgress.Should().BeFalse("since the swipe has been cancelled");
}
public void Swiped_does_not_emit_if_swipe_does_not_match_direction_mask()
{
var recognizer = new PlatformSwipeRecognizerStub(new object(), SwipeDirection.Right, 1);
var swiped = default(SwipeDirection?);
recognizer.Swiped.Take(1).Subscribe(direction => swiped = direction);
recognizer.OnSwiped(SwipeDirection.Left).Should().BeFalse("because no swipe was detected");
swiped.Should().Be(default, "because the swiped event did not fire");
public void Swiped_emits_when_method_invoked()
{
var recognizer = new PlatformSwipeRecognizerStub(new object(), SwipeDirection.Any, 1);
var swiped = default(SwipeDirection?);
recognizer.Swiped.Take(1).Subscribe(direction => swiped = direction);
recognizer.OnSwiped(SwipeDirection.Left).Should().BeTrue("because a swipe was detected");
swiped.Should().Be(SwipeDirection.Left, "because a swipe left occurred");
}
public void OnSwipeEnded_detects_swipe_when_matches_direction_mask_and_threshold(int x1, int y1, int x2, int y2, SwipeDirection expected)
{
var recognizer = new PlatformSwipeRecognizerStub(new object(), SwipeDirection.Any, 1);
var swiped = default(SwipeDirection?);
recognizer.Swiped.Take(1).Subscribe(direction => swiped = direction);
recognizer.OnSwipeBegan(x1, y1);
recognizer.OnSwipeEnded(x2, y2).Should().BeTrue("because a swipe was detected");
swiped.Should().Be(expected, $"because a swipe {swiped} occurred");
}
public void OnSwipeCancelled_throws_if_swipe_not_in_progress()
{
var recognizer = new PlatformSwipeRecognizerStub(new object(), SwipeDirection.Any, 1);
Assert.Throws <InvalidOperationException>(() => recognizer.OnSwipeCancelled());
}
