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Contents
import org.junit.Before
import org.junit.Test
import kotlin.test.assertEquals
class SubstitutionCipherTest {
private val KEY = "abcdefghij"
private lateinit var cipher: Cipher
@Before
fun setup() {
this.cipher = Cipher(KEY)
}
@Test
fun cipherKeepsTheSubmittedKey() {
assertEquals(KEY, cipher.key)
}
@Test
fun cipherCanEncodeWithGivenKey() {
val expectedOutput = "abcdefghij"
assertEquals(expectedOutput, cipher.encode("aaaaaaaaaa"))
}
@Test
fun cipherCanDecodeWithGivenKey() {
val expectedOutput = "aaaaaaaaaa"
assertEquals(expectedOutput, cipher.decode("abcdefghij"))
}
@Test
fun cipherIsReversibleGivenKey() {
val plainText = "abcdefghij"
assertEquals(plainText, cipher.decode(cipher.encode("abcdefghij")))
}
@Test
fun cipherCanDoubleShiftEncode() {
val plainText = "iamapandabear"
val expectedOutput = "qayaeaagaciai"
assertEquals(expectedOutput, Cipher(plainText).encode(plainText))
}
@Test
fun cipherCanWrapEncode() {
val expectedOutput = "zabcdefghi"
assertEquals(expectedOutput, cipher.encode("zzzzzzzzzz"))
}
@Test
fun cipherCanEncodeMessageThatIsShorterThanTheKey() {
val expectedOutput = "abcde"
assertEquals(expectedOutput, cipher.encode("aaaaa"))
}
@Test
fun cipherCanDecodeMessageThatIsShorterThanTheKey() {
val expectedOutput = "aaaaa"
assertEquals(expectedOutput, cipher.decode("abcde"))
}
}
Version data entries
89 entries across 89 versions & 1 rubygems