Write test functions for the following Kotlin code segment:

object Fact {
	val permitColors = readColours("permittedColors")
	val permittedLetters = permittedColors.map { it -> it[0].toUpperCase() }
	val permittedTurns = 12
	val lengthOfCode = 4
	fun getInstance(b: Boolean = false): Game = GameImplementation(permitedColors,
	InputChecker(permittedLetters), permittedTurns,
	RandomPeg(permittedLetters, lengthOfCode),
	b)
	private fun readColors(file: String): List {
	val colors = File(file)
	return colors.readLines()
	}
	}