package token;

import static org.junit.Assert.assertEquals;

import org.junit.Before;
import org.junit.Test;

import file.FilePosition;
import token.Token.Type;
import token.TokenFactory.BadCharacterException;

public class TokenFactoryTester {

    private TokenFactory tokenFactory;
    private FilePosition testPosition;

    @Before
    public void setUp() throws Exception {
        tokenFactory = new TokenFactoryImpl();
        testPosition = new FilePosition("testFile");
        testPosition.setLineNumber(0);
        testPosition.setColumnNumber(0);
    }

    private Type getCreatedTokenType(String text) {
        return tokenFactory.createToken(text, testPosition).getType();
    }

    @Test
    public void testEOFTokenCreation() {
        assertEquals(Type.EOF, tokenFactory.createEOFToken(testPosition).getType());
    }

    @Test(expected = RuntimeException.class)
    public void testEmptyString_ThrowsException() {
        String text = "";
        tokenFactory.createToken(text, testPosition);
    }

    @Test
    public void testLeftParenthesisCreation() {
        String text = "(";
        assertEquals(Type.LEFT_PAREN, getCreatedTokenType(text));
    }

    @Test
    public void testRightParenthesisCreation() {
        String text = ")";
        assertEquals(Type.RIGHT_PAREN, getCreatedTokenType(text));
    }

    @Test
    public void testQuoteMarkCreation() {
        String text = "'";
        assertEquals(Type.QUOTE_MARK, getCreatedTokenType(text));
    }

    @Test
    public void testNumberCreation() {
        String text = "987";
        assertEquals(Type.NUMBER, getCreatedTokenType(text));
    }

    @Test
    public void testIdentifierCreation() {
        String text = "identifier";
        assertEquals(Type.IDENTIFIER, getCreatedTokenType(text));
    }

    @Test
    public void testStringCreation() {
        String text = "\"string\"";
        assertEquals(Type.STRING, getCreatedTokenType(text));
    }

    @Test(expected = BadCharacterException.class)
    public void testBadCharacter() {
        String text = "[abc]";
        tokenFactory.createToken(text, testPosition);
    }

}