public async Task TestSelectionItemChangedMatchesPairs()
{
PairsGameViewModel vm = new PairsGameViewModel(dependencyService);
vm.SelectedTile = vm.PairsTileItems[0];
await vm.SelectionItemChangedAsync();
Tile secondTile = null;
for (int i = 1; i < vm.PairsTileItems.Count; i++)
{
if (String.Equals(vm.PairsTileItems[0].TileFront, vm.PairsTileItems[i].TileFront))
{
secondTile = vm.PairsTileItems[i];
break;
}
}
vm.SelectedTile = secondTile;
await vm.SelectionItemChangedAsync();
foreach (var currTile in vm.PairsTileItems)
{
if (currTile == vm.PairsTileItems[0] || currTile == secondTile)
{
Assert.IsTrue(currTile.FrontShown);
}
else
{
Assert.IsFalse(currTile.FrontShown);
}
}
}
public async Task TestSelectionItemChangedDoesntMatchMismatchedPair()
{
PairsGameViewModel vm = new PairsGameViewModel(dependencyService);
vm.SelectedTile = vm.PairsTileItems[0];
await vm.SelectionItemChangedAsync();
Tile secondTile;
if (String.Equals(vm.PairsTileItems[0].TileFront, vm.PairsTileItems[1].TileFront))
{
secondTile = vm.PairsTileItems[2];
}
else
{
secondTile = vm.PairsTileItems[1];
}
vm.SelectedTile = secondTile;
await vm.SelectionItemChangedAsync();
foreach (var currTile in vm.PairsTileItems)
{
Assert.IsFalse(currTile.FrontShown);
}
}
public void TestHideTilesAndShuffleRandomiseTilesWithoutAddingOrRemoving()
{
PairsGameViewModel vm = new PairsGameViewModel(dependencyService);
int tilesCount = vm.PairsTileItems.Count;
vm.HideExistingTilesAndShuffle();
Assert.AreEqual(tilesCount, vm.PairsTileItems.Count);
}
public async Task TestSelectionItemChangedClearsSelectedTile()
{
PairsGameViewModel vm = new PairsGameViewModel(dependencyService);
vm.SelectedTile = vm.PairsTileItems[0];
await vm.SelectionItemChangedAsync();
Assert.IsNull(vm.SelectedTile);
}
public async Task TestSelectionItemChangedShowsTileWhenSelected()
{
PairsGameViewModel vm = new PairsGameViewModel(dependencyService);
vm.SelectedTile = vm.PairsTileItems[0];
await vm.SelectionItemChangedAsync();
Assert.IsTrue(vm.PairsTileItems[0].FrontShown);
}
public void TestHideTilesAndShuffleHidesTiles()
{
PairsGameViewModel vm = new PairsGameViewModel(dependencyService);
vm.PairsTileItems[5].FrontShown = true;
vm.RandomNumberGenerator = x => 0; //change the random generator to not move tiles.
vm.HideExistingTilesAndShuffle();
Assert.IsFalse(vm.PairsTileItems[5].FrontShown);
}
public void TestFillGridWithTiles()
{
PairsGameViewModel vm = new PairsGameViewModel(dependencyService);
var imageNames = new List <string> {
"image1.jpg", "image2.jpg", "image3.jpg", "image4.jpg"
};
vm.FillTilesCollectionWithTiles(4, imageNames);
Assert.IsNotNull(vm.PairsTileItems);
Assert.AreEqual(8, vm.PairsTileItems.Count);
}
public async Task TestSelectionItemChangedDoesNothingWhenCalledWithNull()
{
PairsGameViewModel vm = new PairsGameViewModel(dependencyService)
{
SelectedTile = null
};
await vm.SelectionItemChangedAsync();
foreach (var currTile in vm.PairsTileItems)
{
Assert.IsFalse(currTile.FrontShown);
}
Assert.AreEqual(null, vm.SelectedTile);
Assert.AreEqual(false, vm.IsBusy);
}
public async Task TestSelectionItemChangedDoesNothingWhenCalledSecondTimeSameTile()
{
PairsGameViewModel vm = new PairsGameViewModel(dependencyService);
vm.SelectedTile = vm.PairsTileItems[0];
await vm.SelectionItemChangedAsync();
vm.SelectedTile = vm.PairsTileItems[0];
await vm.SelectionItemChangedAsync();
Assert.IsTrue(vm.PairsTileItems[0].FrontShown);
for (int i = 1; i < vm.PairsTileItems.Count; i++)
{
Assert.IsFalse(vm.PairsTileItems[i].FrontShown);
}
}
