swift-libs/Tests/Foundation/Cases/Property Wrappers/LossyCodableList+EncodableTests.swift

//===----------------------------------------------------------------------===//
//
// This source file is part of the SwiftLibs open source project
//
// Copyright (c) 2023 Röck+Cöde VoF. and the SwiftLibs project authors
// Licensed under the EUPL 1.2 or later.
//
// See LICENSE.txt for license information
// See CONTRIBUTORS.txt for the list of SwiftLibs project authors
//
//===----------------------------------------------------------------------===//

import Foundation
import XCTest

@testable import SwiftLibsFoundation

final class LossyCodableList_EncodableTests: XCTestCase {

    // MARK: Properties
    
    private let decoder = JSONDecoder()
    private let encoder = JSONEncoder()

    private var dataToDecode: Data!
    private var encodedData: Data!
    private var list: TestCodableList!
    
    // MARK: Setup
    
    override func setUpWithError() throws {
        // This setting is used to guarantee that the properties of the model are being generated by sorted keys order.
        encoder.outputFormatting = .sortedKeys
    }

    // MARK: Tests
    
    func test_encode_whenAllKeysHaveIntValues() throws {
        // GIVEN
        dataToDecode = .Seed.itemsWithAllKeysHavingIntValues
        list = try decoder.decode(TestCodableList.self, from: dataToDecode)

        // WHEN
        encodedData = try encoder.encode(list)

        // THEN
        XCTAssertNotNil(encodedData)
        XCTAssertTrue(encodedData.isNotEmpty)
        XCTAssertEqual(encodedData, .Result.allItemsNotFilteredOut)
    }
    
    func test_encode_whenSomeKeysAndValuesAreNil() throws {
        // GIVEN
        dataToDecode = .Seed.itemsWithSomeKeysAndValuesAreNil
        list = try decoder.decode(TestCodableList.self, from: dataToDecode)

        // WHEN
        encodedData = try encoder.encode(list)
        
        // THEN
        XCTAssertNotNil(encodedData)
        XCTAssertTrue(encodedData.isNotEmpty)
        XCTAssertEqual(encodedData, .Result.someItemsFilteredOut)
    }
    
    func test_encode_whenAllKeysAndValuesAreNil() throws {
        // GIVEN
        dataToDecode = .Seed.itemsWithAllKeysAndValuesAreNil
        list = try decoder.decode(TestCodableList.self, from: dataToDecode)
        
        // WHEN
        encodedData = try encoder.encode(list)

        // THEN
        XCTAssertNotNil(encodedData)
        XCTAssertTrue(encodedData.isNotEmpty)
        XCTAssertEqual(encodedData, .Result.allItemsFilteredOut)
    }

}