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- /*
- * Copyright (c) 2006-2010 Chris Smith, Shane Mc Cormack, Gregory Holmes
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
- package com.dmdirc.addons.calc;
-
- import java.text.ParseException;
- import java.util.Arrays;
- import java.util.List;
-
- import org.junit.Test;
- import static org.junit.Assert.*;
-
- public class LexerTest {
-
- @Test
- public void testBasicNumber() throws ParseException {
- final Lexer lexer = new Lexer("123");
- final List<Token> tokens = lexer.tokenise();
-
- assertEquals(3, tokens.size());
- assertEquals(TokenType.START, tokens.get(0).getType());
- assertEquals(TokenType.NUMBER_INT, tokens.get(1).getType());
- assertEquals("123", tokens.get(1).getContent());
- assertEquals(TokenType.END, tokens.get(2).getType());
- }
-
- @Test
- public void testComplexString() throws ParseException {
- final Lexer lexer = new Lexer("(123 / 2.0) * ((3)+\t (-1))");
- final List<Token> tokens = lexer.tokenise();
-
- assertEquals(18, tokens.size());
- assertEquals(TokenType.START, tokens.get(0).getType());
- assertEquals(TokenType.BRACKET_OPEN, tokens.get(1).getType());
- assertEquals(TokenType.NUMBER_INT, tokens.get(2).getType());
- assertEquals("123", tokens.get(2).getContent());
- assertEquals(TokenType.OP_DIVIDE, tokens.get(3).getType());
- assertEquals(TokenType.NUMBER_FLOAT, tokens.get(4).getType());
- assertEquals("2.0", tokens.get(4).getContent());
- assertEquals(TokenType.BRACKET_CLOSE, tokens.get(5).getType());
- assertEquals(TokenType.OP_MULT, tokens.get(6).getType());
- assertEquals(TokenType.BRACKET_OPEN, tokens.get(7).getType());
- assertEquals(TokenType.BRACKET_OPEN, tokens.get(8).getType());
- assertEquals(TokenType.NUMBER_INT, tokens.get(9).getType());
- assertEquals("3", tokens.get(9).getContent());
- assertEquals(TokenType.BRACKET_CLOSE, tokens.get(10).getType());
- assertEquals(TokenType.OP_PLUS, tokens.get(11).getType());
- assertEquals(TokenType.BRACKET_OPEN, tokens.get(12).getType());
- assertEquals(TokenType.MOD_NEGATIVE, tokens.get(13).getType());
- assertEquals(TokenType.NUMBER_INT, tokens.get(14).getType());
- assertEquals("1", tokens.get(14).getContent());
- assertEquals(TokenType.BRACKET_CLOSE, tokens.get(15).getType());
- assertEquals(TokenType.BRACKET_CLOSE, tokens.get(16).getType());
- assertEquals(TokenType.END, tokens.get(17).getType());
- }
-
- @Test
- public void testBrackets() throws ParseException {
- final Lexer lexer = new Lexer("((1))");
- final List<Token> tokens = lexer.tokenise();
-
- assertEquals(7, tokens.size());
- assertEquals(TokenType.START, tokens.get(0).getType());
- assertEquals(TokenType.BRACKET_OPEN, tokens.get(1).getType());
- assertEquals(TokenType.BRACKET_OPEN, tokens.get(2).getType());
- assertEquals(TokenType.NUMBER_INT, tokens.get(3).getType());
- assertEquals(TokenType.BRACKET_CLOSE, tokens.get(4).getType());
- assertEquals(TokenType.BRACKET_CLOSE, tokens.get(5).getType());
- assertEquals(TokenType.END, tokens.get(6).getType());
- }
-
- @Test
- public void testImplicitMult() throws ParseException {
- final Lexer lexer = new Lexer("1(2)(3)");
- final List<Token> tokens = lexer.tokenise();
-
- assertEquals(11, tokens.size());
- assertEquals(TokenType.START, tokens.get(0).getType());
- assertEquals(TokenType.NUMBER_INT, tokens.get(1).getType());
- assertEquals(TokenType.OP_MULT, tokens.get(2).getType());
- assertEquals(TokenType.BRACKET_OPEN, tokens.get(3).getType());
- assertEquals(TokenType.NUMBER_INT, tokens.get(4).getType());
- assertEquals(TokenType.BRACKET_CLOSE, tokens.get(5).getType());
- assertEquals(TokenType.OP_MULT, tokens.get(6).getType());
- assertEquals(TokenType.BRACKET_OPEN, tokens.get(7).getType());
- assertEquals(TokenType.NUMBER_INT, tokens.get(8).getType());
- assertEquals(TokenType.BRACKET_CLOSE, tokens.get(9).getType());
- assertEquals(TokenType.END, tokens.get(10).getType());
- }
-
- private void doIllegalTest(final String input, final int offset) {
- try {
- fail(Arrays.toString(new Lexer(input).tokenise().toArray()));
- } catch (ParseException ex) {
- assertEquals(offset, ex.getErrorOffset());
- }
- }
-
- @Test public void testIllegalEnd1() { doIllegalTest("", 0); }
- @Test public void testIllegalEnd2() { doIllegalTest("3+", 2); }
- @Test public void testIllegalEnd3() { doIllegalTest("(", 1); }
- @Test public void testIllegalOp1() { doIllegalTest("1++2", 2); }
- @Test public void testIllegalOp2() { doIllegalTest("*1", 0); }
-
- }
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