Ejemplo n.º 1
0
  @Test
  public void testParseSmallTimesExpression() {
    Expression parsedTimes = parser.parse("3*2");
    assertTrue(
        "Parsing a multiplication should return a TimesExpression...",
        parsedTimes instanceof TimesExpression);
    assertTrue(
        "...with a LHS of type IntExpression ...",
        ((TimesExpression) parsedTimes).getLHS() instanceof IntExpression);
    IntExpression lhs = (IntExpression) ((TimesExpression) parsedTimes).getLHS();
    assertTrue(
        "... and a RHS of type IntExpression.",
        ((TimesExpression) parsedTimes).getRHS() instanceof IntExpression);
    IntExpression rhs = (IntExpression) ((TimesExpression) parsedTimes).getRHS();

    assertEquals("Our LHS should have value 3", 3, lhs.getValue());
    assertEquals("and our RHS should have value 2", 2, rhs.getValue());
  }
Ejemplo n.º 2
0
  @Test
  public void testParseSmallPlusExpression() {
    Expression parsedPlus = parser.parse("12+119");
    assertTrue(
        "parsing an int-plus-int should return a plus expression",
        parsedPlus instanceof PlusExpression);

    assertTrue(
        "with a LHS of type IntExpression",
        ((PlusExpression) parsedPlus).getLHS() instanceof IntExpression);
    IntExpression lhs = (IntExpression) ((PlusExpression) parsedPlus).getLHS();
    assertTrue(
        "and with a RHS of type IntExpression",
        ((PlusExpression) parsedPlus).getRHS() instanceof IntExpression);
    IntExpression rhs = (IntExpression) ((PlusExpression) parsedPlus).getRHS();

    assertEquals("our LHS should have value 12", 12, lhs.getValue());
    assertEquals("our RHS should have value 119", 119, rhs.getValue());
  }