@Test public void testFloatNumericWrong() { try { new Lexer("3.5.1"); } catch (CalculatorException e) { assertEquals("Can't create number: 3.5.", e.getMessage()); } }
@Test public void testInvalidInput() { try { new Lexer("a"); } catch (CalculatorException e) { assertEquals("Invalid input: a", e.getMessage()); } }