<?php

declare(strict_types=1);

namespace Eyrie\Tests\Parser;

use Eyrie\Parser\Lexer;
use Eyrie\Parser\Parser;
use Eyrie\Parser\Node\RootNode;
use Eyrie\Parser\Node\TextNode;
use Eyrie\Parser\Node\ExpressionNode;
use PHPUnit\Framework\TestCase;

class ParserTest extends TestCase
{
    public function testParseSimpleText(): void
    {
        $lexer = new Lexer('Hello World');
        $parser = new Parser($lexer->tokenize());
        $root = $parser->parse();

        $this->assertInstanceOf(RootNode::class, $root);
        $this->assertCount(1, $root->children);
        $this->assertInstanceOf(TextNode::class, $root->children[0]);
        $this->assertEquals('Hello World', $root->children[0]->content);
    }

    public function testParseExpression(): void
    {
        $lexer = new Lexer('<< name >>');
        $parser = new Parser($lexer->tokenize());
        $root = $parser->parse();

        $this->assertCount(1, $root->children);
        $this->assertInstanceOf(ExpressionNode::class, $root->children[0]);
        $this->assertEquals('name', $root->children[0]->expression);
    }

    public function testParseMixed(): void
    {
        $lexer = new Lexer('Hello << name >>!');
        $parser = new Parser($lexer->tokenize());
        $root = $parser->parse();

        $this->assertCount(3, $root->children);
        $this->assertInstanceOf(TextNode::class, $root->children[0]);
        $this->assertInstanceOf(ExpressionNode::class, $root->children[1]);
        $this->assertInstanceOf(TextNode::class, $root->children[2]);
    }
}