Sportstime/SportsTimeTests/Services/DataProviderTests.swift

//
//  DataProviderTests.swift
//  SportsTimeTests
//
//  TDD specification tests for DataProvider types.
//

import Testing
import Foundation
@testable import SportsTime

// MARK: - DataProviderError Tests

@Suite("DataProviderError")
struct DataProviderErrorTests {

    // MARK: - Specification Tests: errorDescription

    /// - Expected Behavior: contextNotConfigured has meaningful error message
    @Test("errorDescription: contextNotConfigured mentions configuration")
    func errorDescription_contextNotConfigured() {
        let error = DataProviderError.contextNotConfigured
        #expect(error.errorDescription != nil)
        #expect(error.errorDescription!.lowercased().contains("configured") || error.errorDescription!.lowercased().contains("context"))
    }

    /// - Expected Behavior: error conforms to LocalizedError
    @Test("DataProviderError: conforms to LocalizedError")
    func dataProviderError_localizedError() {
        let error: any LocalizedError = DataProviderError.contextNotConfigured
        #expect(error.errorDescription != nil)
    }

    // MARK: - Invariant Tests

    /// - Invariant: All errors have non-empty descriptions
    @Test("Invariant: all errors have descriptions")
    func invariant_allHaveDescriptions() {
        let errors: [DataProviderError] = [
            .contextNotConfigured
        ]

        for error in errors {
            #expect(error.errorDescription != nil)
            #expect(!error.errorDescription!.isEmpty)
        }
    }
}