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