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//
// LoggingTests.swift
// MullvadVPNTests
//
// Created by Emils on 04/04/2024.
// Copyright © 2025 Mullvad VPN AB. All rights reserved.
//
import Foundation
import XCTest
@testable import MullvadLogging
class LoggingTests: XCTestCase {
let fileManager = FileManager.default
var directoryPath: URL!
override func setUpWithError() throws {
directoryPath = FileManager.default.temporaryDirectory.appendingPathComponent("LoggingTests", isDirectory: true)
try fileManager.createDirectory(
at: directoryPath,
withIntermediateDirectories: true
)
}
override func tearDownWithError() throws {
try fileManager.removeItem(at: directoryPath)
}
func testLogFileOutputStreamWritesHeader() throws {
let headerText = "This is a header"
let logMessage = "And this is a log message\n"
let fileURL = directoryPath.appendingPathComponent(UUID().uuidString)
let stream = LogFileOutputStream(fileURL: fileURL, header: headerText)
stream.write(logMessage)
stream.synchronize()
let contents = try XCTUnwrap(String(contentsOf: fileURL))
XCTAssertEqual(contents, "\(headerText)\n\(logMessage)")
}
func testLogHeader() throws {
let expectedHeader = "Header of a log file"
var builder = LoggerBuilder(header: expectedHeader)
let fileURL = directoryPath.appendingPathComponent(UUID().uuidString)
builder.addFileOutput(fileURL: fileURL)
builder.install()
Logger(label: "test").info(":-P")
sync()
let contents = try XCTUnwrap(String(contentsOf: fileURL))
XCTAssert(contents.hasPrefix(expectedHeader))
}
func testGettingLogFilesByApplicationTarget() async throws {
let mainTargetLog = ApplicationConfiguration.newLogFileURL(for: .mainApp, in: directoryPath)
let packetTunnelTargetLog = ApplicationConfiguration.newLogFileURL(for: .packetTunnel, in: directoryPath)
let logPaths = [
directoryPath.appendingPathComponent("test1.log"),
directoryPath.appendingPathComponent("test2.log"),
mainTargetLog,
packetTunnelTargetLog,
]
logPaths.forEach { url in
let stream = LogFileOutputStream(fileURL: url, header: "")
stream.write("test")
stream.synchronize()
}
var urls = ApplicationConfiguration.logFileURLs(for: .mainApp, in: directoryPath)
XCTAssertEqual(urls.count, 1)
XCTAssertEqual(urls.first, mainTargetLog)
urls = ApplicationConfiguration.logFileURLs(for: .packetTunnel, in: directoryPath)
XCTAssertEqual(urls.count, 1)
XCTAssertEqual(urls.first, packetTunnelTargetLog)
}
}
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