public void IsValidTest()
{
var q = new ArrayQ();
Assert.AreEqual(true, q.IsValid(""));
Assert.AreEqual(true, q.IsValid("()"));
Assert.AreEqual(true, q.IsValid("()[]{}"));
Assert.AreEqual(false, q.IsValid("(]"));
Assert.AreEqual(false, q.IsValid("([)]"));
Assert.AreEqual(true, q.IsValid("{[]}"));
Assert.AreEqual(false, q.IsValid("(("));
}