Beispiel #1
0
 @Test(expected = calculator.SyntaxErrorException.class)
 public void testThrow() {
   Lexer lex = new Lexer("m");
   try {
     lex.next();
   } catch (SyntaxErrorException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
   }
 }
Beispiel #2
0
  @Test
  public void testNext() throws SyntaxErrorException {
    String s0 = "3.14234";
    Lexer lex0 = new Lexer(s0);
    assertEquals(new Lexer.Token(Type.NUM, "3.14234").toString(), lex0.next().toString());
    assertEquals(new Lexer.Token(Type.EOF, "").toString(), lex0.next().toString());

    String s1 = "in";
    Lexer lex1 = new Lexer(s1);
    assertEquals(new Lexer.Token(Type.UNIT, "in").toString(), lex1.next().toString());
    assertEquals(new Lexer.Token(Type.EOF, "").toString(), lex1.next().toString());

    String s2 = "4.5354 pts 3";
    Lexer lex2 = new Lexer(s2);
    assertEquals(new Lexer.Token(Type.NUM, "4.5354").toString(), lex2.next().toString());
    assertEquals(new Lexer.Token(Type.UNIT, "pts").toString(), lex2.next().toString());
    assertEquals(new Lexer.Token(Type.NUM, "3").toString(), lex2.next().toString());
    assertEquals(new Lexer.Token(Type.EOF, "").toString(), lex2.next().toString());

    String s3 = "5 / 3pts";
    Lexer lex3 = new Lexer(s3);
    assertEquals(new Lexer.Token(Type.NUM, "5").toString(), lex3.next().toString());
    assertEquals(new Lexer.Token(Type.OP, "/").toString(), lex3.next().toString());
    assertEquals(new Lexer.Token(Type.NUM, "3").toString(), lex3.next().toString());
    assertEquals(new Lexer.Token(Type.UNIT, "pts").toString(), lex3.next().toString());
    assertEquals(new Lexer.Token(Type.EOF, "").toString(), lex3.next().toString());

    String s4 = "((5+3pts)/4in)";
    Lexer lex4 = new Lexer(s4);
    assertEquals(new Lexer.Token(Type.PAREN, "(").toString(), lex4.next().toString());
    assertEquals(new Lexer.Token(Type.PAREN, "(").toString(), lex4.next().toString());
    assertEquals(new Lexer.Token(Type.NUM, "5").toString(), lex4.next().toString());
    assertEquals(new Lexer.Token(Type.OP, "+").toString(), lex4.next().toString());
    assertEquals(new Lexer.Token(Type.NUM, "3").toString(), lex4.next().toString());
    assertEquals(new Lexer.Token(Type.UNIT, "pts").toString(), lex4.next().toString());
    assertEquals(new Lexer.Token(Type.PAREN, ")").toString(), lex4.next().toString());
    assertEquals(new Lexer.Token(Type.OP, "/").toString(), lex4.next().toString());
    assertEquals(new Lexer.Token(Type.NUM, "4").toString(), lex4.next().toString());
    assertEquals(new Lexer.Token(Type.UNIT, "in").toString(), lex4.next().toString());
    assertEquals(new Lexer.Token(Type.PAREN, ")").toString(), lex4.next().toString());
    assertEquals(new Lexer.Token(Type.EOF, "").toString(), lex4.next().toString());

    // should throw exception
  }