public void TestRemovingOperatorwithBracket()
{
string expected;
IEnumerable <InputElement> output = new List <InputElement>();
ip.Clear();
ip.GetseparatedPlainText("(", out output);
expected = "(";
Assert.AreEqual <String>(expected, String.Join(" ", output));
ip.DeleteLast(out output);
expected = "";
Assert.AreEqual <String>(expected, String.Join(" ", output));
ip.Clear();
ip.GetseparatedPlainText("1", out output);
ip.GetseparatedPlainText("F", out output);
expected = "1 F";
Assert.AreEqual <String>(expected, String.Join(" ", output));
ip.DeleteLast(out output);
expected = "1";
Assert.AreEqual <String>(expected, String.Join(" ", output));
ip.Clear();
ip.GetseparatedPlainText("1", out output);
ip.GetseparatedPlainText("T", out output);
expected = "1 * T (";
Assert.AreEqual <String>(expected, String.Join(" ", output));
ip.DeleteLast(out output);
expected = "1 *";
Assert.AreEqual <String>(expected, String.Join(" ", output));
ip.Clear();
ip.GetseparatedPlainText("1", out output);
ip.GetseparatedPlainText("Q", out output);
expected = "1 * Q (";
Assert.AreEqual <String>(expected, String.Join(" ", output));
ip.DeleteLast(out output);
expected = "1 *";
Assert.AreEqual <String>(expected, String.Join(" ", output));
ip.Clear();
ip.GetseparatedPlainText("1", out output);
ip.GetseparatedPlainText("A", out output);
expected = "1 * A (";
Assert.AreEqual <String>(expected, String.Join(" ", output));
ip.DeleteLast(out output);
expected = "1 *";
Assert.AreEqual <String>(expected, String.Join(" ", output));
}