//
//  PreferenceValueTests.swift
//
//  Copyright 2026 Brendan Szymanski <hello@bscubed.dev>
//
//  This program 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/>.
//
//  SPDX-License-Identifier: GPL-3.0-or-later
//

import Testing

@testable import LuminateCore

/// Verifies typed conversions at the preference storage boundary.
@Suite struct PreferenceValueTests {
    @Test("Boolean decoding accepts only zero and one")
    func booleanDecoding() {
        #expect(Bool(preference: .integer(0)) == false)
        #expect(Bool(preference: .integer(1)) == true)
        #expect(Bool(preference: .integer(2)) == nil)
    }

    @Test("Double decoding accepts integer storage")
    func doubleIntegerDecoding() {
        #expect(Double(preference: .integer(3)) == 3.0)
    }

    @Test("Non-finite doubles encode as zero")
    func nonFiniteDoubleEncoding() {
        #expect(Double.nan.preferenceValue == .real(0))
        #expect(Double.infinity.preferenceValue == .real(0))
    }
}