public void Test_contains() { MyPriorityQueue <char> queue = new MyPriorityQueue <char>(); queue.Add('a'); queue.Add('d'); queue.Add('g'); queue.Add('x'); queue.Add('z'); Assert.True(queue.Contains('a')); Assert.True(queue.Contains('z')); Assert.True(queue.Contains('g')); Assert.False(queue.Contains('r')); Assert.False(queue.Contains('u')); Assert.False(queue.Contains('i')); }