// p4rse, Copyright 2026, Will Hawkins
//
// This file is part of p4rse.

// This file is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.

import Testing
import TreeSitter
import SwiftTreeSitter
import TreeSitterP4
import Foundation
import P4

import Macros

@testable import Parser

@Test func test_simple_parser() async throws {
    let simple_parser_declaration = """
        parser simple() {
           state start {
               transition drop;
           }
        }
        """

    let program = try #UseOkResult(Parser.Program(simple_parser_declaration))

    #expect(program.parsers.count == 1)
    #expect(program.parsers[0].states.count == 1)
    #expect(program.parsers[0].states[0].state_name == "start")
    #expect(program.parsers[0].states[0].statements.count == 0)
}

@Test func test_simple_parser_syntax_error() async throws {
    let simple_parser_declaration = """
        parser simple() {
           state
               transition drop;
           }
        }
        """
    #expect(#RequireErrorResult(Error(withMessage: "Could not compile the P4 program"), Parser.Program(simple_parser_declaration)))
}

@Test func test_simple_parser_with_statement() async throws {
    let simple_parser_declaration = """
        parser simple() {
           state start {
               true;
               transition drop;
           }
        }
        """

    let program = try #UseOkResult(Parser.Program(simple_parser_declaration))

    #expect(program.parsers.count == 1)
    #expect(program.parsers[0].states.count == 1)
    #expect(program.parsers[0].states[0].state_name == "start")
    #expect(program.parsers[0].states[0].statements.count == 1)
}