public void IsThereSubtractionSymbolAfterOtherSymbolsTest()
{
mathExpression = MathExpression.CreateExpressionDobuleSubtractionOperators();
bool falseExpected = Condition.IsThereSubtractionSymbolAfterOtherSymbols(mathExpression, 1);
bool trueExpected = Condition.IsThereSubtractionSymbolAfterOtherSymbols(mathExpression, 4);
Assert.IsFalse(falseExpected);
Assert.IsTrue(trueExpected);
}