Sha256: f478179540cbb264223971cece68a5c02c267ad7e17ac53f26d5f345075d358a
Contents?: true
Size: 1.68 KB
Versions: 89
Compression:
Stored size: 1.68 KB
Contents
import org.junit.Test
import kotlin.test.assertEquals
class LuhnTest {
@Test
fun checkDigitIsRightMostDigit() {
val expectedOutput = 7
assertEquals(expectedOutput, Luhn(34567).checkDigit)
}
@Test
fun addendsDoublesEveryOtherNumberFromRight() {
val expectedOutput = listOf(1, 4, 1, 4, 1)
assertEquals(expectedOutput, Luhn(12121).addends)
}
@Test
fun addendsSubtracts9WhenDoubledNumberIsMoreThan9() {
val expectedOutput = listOf(7, 6, 6, 1)
assertEquals(expectedOutput, Luhn(8631).addends)
}
@Test
fun checkSumAddsAddendsTogether1() {
val expectedOutput = 22
assertEquals(expectedOutput, Luhn(4913).checksum)
}
@Test
fun checkSumAddsAddendsTogether2() {
val expectedOutput = 21
assertEquals(expectedOutput, Luhn(201773).checksum)
}
@Test
fun numberIsValidWhenChecksumMod10IsZero1() {
val expectedOutput = false
assertEquals(expectedOutput, Luhn(738).isValid)
}
@Test
fun numberIsValidWhenChecksumMod10IsZero2() {
val expectedOutput = true
assertEquals(expectedOutput, Luhn(8739567).isValid)
}
@Test
fun luhnCanCreateSimpleNumbersWithValidCheckDigit() {
val expectedOutput = 1230L
assertEquals(expectedOutput, Luhn(123).create)
}
@Test
fun luhnCanCreateLargeNumbersWithValidCheckDigit() {
val expectedOutput = 8739567L
assertEquals(expectedOutput, Luhn(873956).create)
}
@Test
fun luhnCanCreateHugeNumbersWithValidCheckDigit() {
val expectedOutput = 8372637564L
assertEquals(expectedOutput, Luhn(837263756).create)
}
}
Version data entries
89 entries across 89 versions & 1 rubygems