<?php

/*
 * This file is part of the Yosymfony\Toml package.
 *
 * (c) YoSymfony <http://github.com/yosymfony>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Yosymfony\Toml\tests;

use PHPUnit\Framework\TestCase;
use Yosymfony\Toml\Lexer;

class LexerTest extends TestCase
{
    private $lexer;

    public function setUp()
    {
        $this->lexer = new Lexer();
    }

    public function testTokenizeMustRecognizeEqualToken()
    {
        $ts = $this->lexer->tokenize('=');

        $this->assertTrue($ts->isNext('T_EQUAL'));
    }

    public function testTokenizeMustRecognizeBooleanTokenWhenThereIsATrueValue()
    {
        $ts = $this->lexer->tokenize('true');

        $this->assertTrue($ts->isNext('T_BOOLEAN'));
    }

    public function testTokenizeMustRecognizeBooleanTokenWhenThereIsAFalseValue()
    {
        $ts = $this->lexer->tokenize('false');

        $this->assertTrue($ts->isNext('T_BOOLEAN'));
    }

    public function testTokenizeMustRecognizeUnquotedKeyToken()
    {
        $ts = $this->lexer->tokenize('title');

        $this->assertTrue($ts->isNext('T_UNQUOTED_KEY'));
    }

    public function testTokenizeMustRecognizeIntegerTokenWhenThereIsAPositiveNumber()
    {
        $ts = $this->lexer->tokenize('25');

        $this->assertTrue($ts->isNext('T_INTEGER'));
    }

    public function testTokenizeMustRecognizeIntegerTokenWhenThereIsANegativeNumber()
    {
        $ts = $this->lexer->tokenize('-25');

        $this->assertTrue($ts->isNext('T_INTEGER'));
    }

    public function testTokenizeMustRecognizeIntegerTokenWhenThereIsNumberWithUnderscoreSeparator()
    {
        $ts = $this->lexer->tokenize('2_5');

        $this->assertTrue($ts->isNext('T_INTEGER'));
    }

    public function testTokenizeMustRecognizeFloatTokenWhenThereIsAFloatNumber()
    {
        $ts = $this->lexer->tokenize('2.5');

        $this->assertTrue($ts->isNext('T_FLOAT'));
    }

    public function testTokenizeMustRecognizeFloatTokenWhenThereIsAFloatNumberWithUnderscoreSeparator()
    {
        $ts = $this->lexer->tokenize('9_224_617.445_991_228_313');

        $this->assertTrue($ts->isNext('T_FLOAT'));
    }

    public function testTokenizeMustRecognizeFloatTokenWhenThereIsANegativeFloatNumber()
    {
        $ts = $this->lexer->tokenize('-2.5');

        $this->assertTrue($ts->isNext('T_FLOAT'));
    }

    public function testTokenizeMustRecognizeFloatTokenWhenThereIsANumberWithExponent()
    {
        $ts = $this->lexer->tokenize('5e+22');

        $this->assertTrue($ts->isNext('T_FLOAT'));
    }

    public function testTokenizeMustRecognizeFloatTokenWhenThereIsANumberWithExponentAndUnderscoreSeparator()
    {
        $ts = $this->lexer->tokenize('1e1_000');

        $this->assertTrue($ts->isNext('T_FLOAT'));
    }

    public function testTokenizeMustRecognizeFloatTokenWhenThereIsAFloatNumberWithExponent()
    {
        $ts = $this->lexer->tokenize('6.626e-34');

        $this->assertTrue($ts->isNext('T_FLOAT'));
    }

    public function testTokenizeMustRecognizeDataTimeTokenWhenThereIsRfc3339Datetime()
    {
        $ts = $this->lexer->tokenize('1979-05-27T07:32:00Z');

        $this->assertTrue($ts->isNext('T_DATE_TIME'));
    }

    public function testTokenizeMustRecognizeDataTimeTokenWhenThereIsRfc3339DatetimeWithOffset()
    {
        $ts = $this->lexer->tokenize('1979-05-27T00:32:00-07:00');

        $this->assertTrue($ts->isNext('T_DATE_TIME'));
    }

    public function testTokenizeMustRecognizeDataTimeTokenWhenThereIsRfc3339DatetimeWithOffsetSecondFraction()
    {
        $ts = $this->lexer->tokenize('1979-05-27T00:32:00.999999-07:00');

        $this->assertTrue($ts->isNext('T_DATE_TIME'));
    }

    public function testTokenizeMustRecognizeQuotationMark()
    {
        $ts = $this->lexer->tokenize('"');

        $this->assertTrue($ts->isNext('T_QUOTATION_MARK'));
    }

    public function testTokenizeMustRecognize3QuotationMark()
    {
        $ts = $this->lexer->tokenize('"""');

        $this->assertTrue($ts->isNextSequence(['T_3_QUOTATION_MARK', 'T_EOS']));
    }

    public function testTokenizeMustRecognizeApostrophe()
    {
        $ts = $this->lexer->tokenize("'");

        $this->assertTrue($ts->isNext('T_APOSTROPHE'));
    }

    public function testTokenizeMustRecognize3Apostrophe()
    {
        $ts = $this->lexer->tokenize("'''");

        $this->assertTrue($ts->isNext('T_3_APOSTROPHE'));
    }

    public function testTokenizeMustRecognizeEscapedCharacterWhenThereIsBackspace()
    {
        $ts = $this->lexer->tokenize('\b');

        $this->assertTrue($ts->isNext('T_ESCAPED_CHARACTER'));
    }

    public function testTokenizeMustRecognizeEscapedCharacterWhenThereIsTab()
    {
        $ts = $this->lexer->tokenize('\t');

        $this->assertTrue($ts->isNext('T_ESCAPED_CHARACTER'));
    }

    public function testTokenizeMustRecognizeEscapedCharacterWhenThereIsLinefeed()
    {
        $ts = $this->lexer->tokenize('\n');

        $this->assertTrue($ts->isNext('T_ESCAPED_CHARACTER'));
    }

    public function testTokenizeMustRecognizeEscapedCharacterWhenThereIsFormfeed()
    {
        $ts = $this->lexer->tokenize('\f');

        $this->assertTrue($ts->isNext('T_ESCAPED_CHARACTER'));
    }

    public function testTokenizeMustRecognizeEscapedCharacterWhenThereIsCarriageReturn()
    {
        $ts = $this->lexer->tokenize('\r');

        $this->assertTrue($ts->isNext('T_ESCAPED_CHARACTER'));
    }

    public function testTokenizeMustRecognizeEscapedCharacterWhenThereIsQuote()
    {
        $ts = $this->lexer->tokenize('\"');

        $this->assertTrue($ts->isNext('T_ESCAPED_CHARACTER'));
    }

    public function testTokenizeMustRecognizeEscapedCharacterWhenThereIsBackslash()
    {
        $ts = $this->lexer->tokenize('\\\\');

        $this->assertTrue($ts->isNext('T_ESCAPED_CHARACTER'));
    }

    public function testTokenizeMustRecognizeEscapedCharacterWhenThereIsUnicodeUsingFourCharacters()
    {
        $ts = $this->lexer->tokenize('\u00E9');

        $this->assertTrue($ts->isNext('T_ESCAPED_CHARACTER'));
    }

    public function testTokenizeMustRecognizeEscapedCharacterWhenThereIsUnicodeUsingEightCharacters()
    {
        $ts = $this->lexer->tokenize('\U00E90000');

        $this->assertTrue($ts->isNext('T_ESCAPED_CHARACTER'));
    }

    public function testTokenizeMustRecognizeBasicUnescapedString()
    {
        $ts = $this->lexer->tokenize('@text');

        $this->assertTrue($ts->isNextSequence([
            'T_BASIC_UNESCAPED',
            'T_EOS'
        ]));
    }

    public function testTokenizeMustRecognizeHash()
    {
        $ts = $this->lexer->tokenize('#');

        $this->assertTrue($ts->isNext('T_HASH'));
    }

    public function testTokenizeMustRecognizeEscape()
    {
        $ts = $this->lexer->tokenize('\\');

        $this->assertTrue($ts->isNextSequence(['T_ESCAPE', 'T_EOS']));
    }

    public function testTokenizeMustRecognizeEscapeAndEscapedCharacter()
    {
        $ts = $this->lexer->tokenize('\\ \b');

        $this->assertTrue($ts->isNextSequence([
            'T_ESCAPE',
            'T_SPACE',
            'T_ESCAPED_CHARACTER',
            'T_EOS'
        ]));
    }

    public function testTokenizeMustRecognizeLeftSquareBraket()
    {
        $ts = $this->lexer->tokenize('[');

        $this->assertTrue($ts->isNext('T_LEFT_SQUARE_BRAKET'));
    }

    public function testTokenizeMustRecognizeRightSquareBraket()
    {
        $ts = $this->lexer->tokenize(']');

        $this->assertTrue($ts->isNext('T_RIGHT_SQUARE_BRAKET'));
    }

    public function testTokenizeMustRecognizeDot()
    {
        $ts = $this->lexer->tokenize('.');

        $this->assertTrue($ts->isNext('T_DOT'));
    }

    public function testTokenizeMustRecognizeLeftCurlyBrace()
    {
        $ts = $this->lexer->tokenize('{');

        $this->assertTrue($ts->isNext('T_LEFT_CURLY_BRACE'));
    }

    public function testTokenizeMustRecognizeRightCurlyBrace()
    {
        $ts = $this->lexer->tokenize('}');

        $this->assertTrue($ts->isNext('T_RIGHT_CURLY_BRACE'));
    }
}