public void GetStocksDictionary_AllInitializedStocks_VerifyEqualityByExpectedOutput()
        {
            var expected = new Dictionary <Coordinates, Stock>
            {
                { new Coordinates(3, 'D'), new Stock(new Product("Coca Cola 250ml", 30), 8) },
                { new Coordinates(2, 'D'), new Stock(new Product("Sprite 250ml", 25), 6) },
                { new Coordinates(0, 'A'), new Stock(new Product("Bake Rolls 150g", 35), 4) },
                { new Coordinates(5, 'B'), new Stock(new Product("Snickers 50g", 20), 9) },
                { new Coordinates(2, 'F'), new Stock(new Product("Evian 500ml", 30), 1) },
                { new Coordinates(7, 'E'), new Stock(new Product("Bohemia Chips 25g", 25), 4) },
                { new Coordinates(4, 'C'), new Stock(new Product("Twix 40g", 15), 0) },
                { new Coordinates(7, 'F'), new Stock(new Product("Mattoni 250ml", 25), 5) }
            };

            var dictionaryToCheck = controlUnit.GetStocksDictionary();

            if (dictionaryToCheck == null || dictionaryToCheck.Count != expected.Count)
            {
                Assert.Fail("Dictionary to check is null or does not contain same amount of key value pairs as the expected one.");
            }
            foreach (var keyValuePair in expected)
            {
                if (!dictionaryToCheck.ContainsKey(keyValuePair.Key) || !dictionaryToCheck[keyValuePair.Key].Equals(keyValuePair.Value))
                {
                    var a = dictionaryToCheck[keyValuePair.Key];
                    var b = keyValuePair.Value;
                    Assert.Fail($"Dictionary to check does not contain key {keyValuePair.Key} or value within this key ({keyValuePair.Value}) does not equal the expected one.");
                }
            }
        }